This error indicates that a constant references itself.
All constants need to resolve to a value in an acyclic manner.
For example, neither of the following can be sensibly compiled:
```
const X: u32 = X;
```
```
const X: u32 = Y;
const Y: u32 = X;
```
valopt build "${DEFAULT_BUILD}" "GNUs ./configure syntax LLVM build triple"
valopt android-cross-path "/opt/ndk_standalone" "Android NDK standalone path"
valopt release-channel "dev" "the name of the release channel to build"
+valopt musl-root "/usr/local" "MUSL root installation directory"
# Many of these are saved below during the "writing configuration" step
# (others are conditionally saved).
fi
;;
+
+ *-musl)
+ if [ ! -f $CFG_MUSL_ROOT/lib/libc.a ]
+ then
+ err "musl libc $CFG_MUSL_ROOT/lib/libc.a not found"
+ fi
+ ;;
*)
;;
esac
CFG_GCCISH_CXXFLAGS_aarch64-apple-ios := -fno-rtti $(CFG_IOS_SDK_FLAGS_aarch64-apple-ios) -I$(CFG_IOS_SDK_aarch64-apple-ios)/usr/include/c++/4.2.1
CFG_GCCISH_LINK_FLAGS_aarch64-apple-ios := -lpthread -syslibroot $(CFG_IOS_SDK_aarch64-apple-ios) -Wl,-no_compact_unwind
CFG_GCCISH_DEF_FLAG_aarch64-apple-ios := -Wl,-exported_symbols_list,
-CFG_GCCISH_PRE_LIB_FLAGS_aarch64-apple-ios :=
-CFG_GCCISH_POST_LIB_FLAGS_aarch64-apple-ios :=
-CFG_DEF_SUFFIX_aarch64-apple-ios := .darwin.def
CFG_LLC_FLAGS_aarch64-apple-ios := -mattr=+neon,+cyclone,+fp-armv8
CFG_INSTALL_NAME_aarch64-apple-ios = -Wl,-install_name,@rpath/$(1)
CFG_LIBUV_LINK_FLAGS_aarch64-apple-ios =
CFG_EXE_SUFFIX_aarch64-apple-ios :=
CFG_WINDOWSY_aarch64-apple-ios :=
CFG_UNIXY_aarch64-apple-ios := 1
-CFG_PATH_MUNGE_aarch64-apple-ios := true
CFG_LDPATH_aarch64-apple-ios :=
CFG_RUN_aarch64-apple-ios = $(2)
CFG_RUN_TARG_aarch64-apple-ios = $(call CFG_RUN_aarch64-apple-ios,,$(2))
CFG_GCCISH_CXXFLAGS_aarch64-linux-android := -fno-rtti $(CXXFLAGS)
CFG_GCCISH_LINK_FLAGS_aarch64-linux-android := -shared -fPIC -ldl -g -lm -lsupc++
CFG_GCCISH_DEF_FLAG_aarch64-linux-android := -Wl,--export-dynamic,--dynamic-list=
-CFG_GCCISH_PRE_LIB_FLAGS_aarch64-linux-android := -Wl,-whole-archive
-CFG_GCCISH_POST_LIB_FLAGS_aarch64-linux-android := -Wl,-no-whole-archive
-CFG_DEF_SUFFIX_aarch64-linux-android := .android.def
CFG_LLC_FLAGS_aarch64-linux-android :=
CFG_INSTALL_NAME_aarch64-linux-android =
CFG_EXE_SUFFIX_aarch64-linux-android :=
CFG_WINDOWSY_aarch64-linux-android :=
CFG_UNIXY_aarch64-linux-android := 1
-CFG_PATH_MUNGE_aarch64-linux-android := true
CFG_LDPATH_aarch64-linux-android :=
CFG_RUN_aarch64-linux-android=
CFG_RUN_TARG_aarch64-linux-android=
CFG_GCCISH_CXXFLAGS_aarch64-unknown-linux-gnu := -fno-rtti $(CXXFLAGS)
CFG_GCCISH_LINK_FLAGS_aarch64-unknown-linux-gnu := -shared -fPIC -g
CFG_GCCISH_DEF_FLAG_aarch64-unknown-linux-gnu := -Wl,--export-dynamic,--dynamic-list=
-CFG_GCCISH_PRE_LIB_FLAGS_aarch64-unknown-linux-gnu := -Wl,-whole-archive
-CFG_GCCISH_POST_LIB_FLAGS_aarch64-unknown-linux-gnu := -Wl,-no-whole-archive
-CFG_DEF_SUFFIX_aarch64-unknown-linux-gnu := .linux.def
CFG_LLC_FLAGS_aarch64-unknown-linux-gnu :=
CFG_INSTALL_NAME_aarch64-unknown-linux-gnu =
CFG_EXE_SUFFIX_aarch64-unknown-linux-gnu :=
CFG_WINDOWSY_aarch64-unknown-linux-gnu :=
CFG_UNIXY_aarch64-unknown-linux-gnu := 1
-CFG_PATH_MUNGE_aarch64-unknown-linux-gnu := true
CFG_LDPATH_aarch64-unknown-linux-gnu :=
CFG_RUN_aarch64-unknown-linux-gnu=$(2)
CFG_RUN_TARG_aarch64-unknown-linux-gnu=$(call CFG_RUN_aarch64-unknown-linux-gnu,,$(2))
CFG_GCCISH_CXXFLAGS_arm-linux-androideabi := -fno-rtti $(CXXFLAGS)
CFG_GCCISH_LINK_FLAGS_arm-linux-androideabi := -shared -fPIC -ldl -g -lm -lsupc++
CFG_GCCISH_DEF_FLAG_arm-linux-androideabi := -Wl,--export-dynamic,--dynamic-list=
-CFG_GCCISH_PRE_LIB_FLAGS_arm-linux-androideabi := -Wl,-whole-archive
-CFG_GCCISH_POST_LIB_FLAGS_arm-linux-androideabi := -Wl,-no-whole-archive
-CFG_DEF_SUFFIX_arm-linux-androideabi := .android.def
CFG_LLC_FLAGS_arm-linux-androideabi :=
CFG_INSTALL_NAME_arm-linux-androideabi =
CFG_EXE_SUFFIX_arm-linux-androideabi :=
CFG_WINDOWSY_arm-linux-androideabi :=
CFG_UNIXY_arm-linux-androideabi := 1
-CFG_PATH_MUNGE_arm-linux-androideabi := true
CFG_LDPATH_arm-linux-androideabi :=
CFG_RUN_arm-linux-androideabi=
CFG_RUN_TARG_arm-linux-androideabi=
CFG_GCCISH_CXXFLAGS_arm-unknown-linux-gnueabi := -fno-rtti $(CXXFLAGS)
CFG_GCCISH_LINK_FLAGS_arm-unknown-linux-gnueabi := -shared -fPIC -g
CFG_GCCISH_DEF_FLAG_arm-unknown-linux-gnueabi := -Wl,--export-dynamic,--dynamic-list=
-CFG_GCCISH_PRE_LIB_FLAGS_arm-unknown-linux-gnueabi := -Wl,-whole-archive
-CFG_GCCISH_POST_LIB_FLAGS_arm-unknown-linux-gnueabi := -Wl,-no-whole-archive
-CFG_DEF_SUFFIX_arm-unknown-linux-gnueabi := .linux.def
CFG_LLC_FLAGS_arm-unknown-linux-gnueabi :=
CFG_INSTALL_NAME_arm-unknown-linux-gnueabi =
CFG_EXE_SUFFIX_arm-unknown-linux-gnueabi :=
CFG_WINDOWSY_arm-unknown-linux-gnueabi :=
CFG_UNIXY_arm-unknown-linux-gnueabi := 1
-CFG_PATH_MUNGE_arm-unknown-linux-gnueabi := true
CFG_LDPATH_arm-unknown-linux-gnueabi :=
CFG_RUN_arm-unknown-linux-gnueabi=$(2)
CFG_RUN_TARG_arm-unknown-linux-gnueabi=$(call CFG_RUN_arm-unknown-linux-gnueabi,,$(2))
CFG_GCCISH_CXXFLAGS_arm-unknown-linux-gnueabihf := -fno-rtti $(CXXFLAGS)
CFG_GCCISH_LINK_FLAGS_arm-unknown-linux-gnueabihf := -shared -fPIC -g
CFG_GCCISH_DEF_FLAG_arm-unknown-linux-gnueabihf := -Wl,--export-dynamic,--dynamic-list=
-CFG_GCCISH_PRE_LIB_FLAGS_arm-unknown-linux-gnueabihf := -Wl,-whole-archive
-CFG_GCCISH_POST_LIB_FLAGS_arm-unknown-linux-gnueabihf := -Wl,-no-whole-archive
-CFG_DEF_SUFFIX_arm-unknown-linux-gnueabihf := .linux.def
CFG_LLC_FLAGS_arm-unknown-linux-gnueabihf :=
CFG_INSTALL_NAME_ar,-unknown-linux-gnueabihf =
CFG_EXE_SUFFIX_arm-unknown-linux-gnueabihf :=
CFG_WINDOWSY_arm-unknown-linux-gnueabihf :=
CFG_UNIXY_arm-unknown-linux-gnueabihf := 1
-CFG_PATH_MUNGE_arm-unknown-linux-gnueabihf := true
CFG_LDPATH_arm-unknown-linux-gnueabihf :=
CFG_RUN_arm-unknown-linux-gnueabihf=$(2)
CFG_RUN_TARG_arm-unknown-linux-gnueabihf=$(call CFG_RUN_arm-unknown-linux-gnueabihf,,$(2))
CFG_GCCISH_CXXFLAGS_armv7-apple-ios := -fno-rtti $(CFG_IOS_SDK_FLAGS_armv7-apple-ios) -I$(CFG_IOS_SDK_armv7-apple-ios)/usr/include/c++/4.2.1
CFG_GCCISH_LINK_FLAGS_armv7-apple-ios := -lpthread -syslibroot $(CFG_IOS_SDK_armv7-apple-ios) -Wl,-no_compact_unwind
CFG_GCCISH_DEF_FLAG_armv7-apple-ios := -Wl,-exported_symbols_list,
-CFG_GCCISH_PRE_LIB_FLAGS_armv7-apple-ios :=
-CFG_GCCISH_POST_LIB_FLAGS_armv7-apple-ios :=
-CFG_DEF_SUFFIX_armv7-apple-ios := .darwin.def
CFG_LLC_FLAGS_armv7-apple-ios := -mattr=+vfp3,+v7,+neon -march=arm
CFG_INSTALL_NAME_armv7-apple-ios = -Wl,-install_name,@rpath/$(1)
CFG_EXE_SUFFIX_armv7-apple-ios :=
CFG_WINDOWSY_armv7-apple-ios :=
CFG_UNIXY_armv7-apple-ios := 1
-CFG_PATH_MUNGE_armv7-apple-ios := true
CFG_LDPATH_armv7-apple-ios :=
CFG_RUN_armv7-apple-ios = $(2)
CFG_RUN_TARG_armv7-apple-ios = $(call CFG_RUN_armv7-apple-ios,,$(2))
CFG_GCCISH_CXXFLAGS_armv7s-apple-ios := -fno-rtti $(CFG_IOS_SDK_FLAGS_armv7s-apple-ios) -I$(CFG_IOS_SDK_armv7s-apple-ios)/usr/include/c++/4.2.1
CFG_GCCISH_LINK_FLAGS_armv7s-apple-ios := -lpthread -syslibroot $(CFG_IOS_SDK_armv7s-apple-ios) -Wl,-no_compact_unwind
CFG_GCCISH_DEF_FLAG_armv7s-apple-ios := -Wl,-exported_symbols_list,
-CFG_GCCISH_PRE_LIB_FLAGS_armv7s-apple-ios :=
-CFG_GCCISH_POST_LIB_FLAGS_armv7s-apple-ios :=
-CFG_DEF_SUFFIX_armv7s-apple-ios := .darwin.def
CFG_LLC_FLAGS_armv7s-apple-ios := -mattr=+vfp4,+v7,+neon
CFG_INSTALL_NAME_armv7s-apple-ios = -Wl,-install_name,@rpath/$(1)
CFG_EXE_SUFFIX_armv7s-apple-ios :=
CFG_WINDOWSY_armv7s-apple-ios :=
CFG_UNIXY_armv7s-apple-ios := 1
-CFG_PATH_MUNGE_armv7s-apple-ios := true
CFG_LDPATH_armv7s-apple-ios :=
CFG_RUN_armv7s-apple-ios = $(2)
CFG_RUN_TARG_armv7s-apple-ios = $(call CFG_RUN_armv7s-apple-ios,,$(2))
CFG_GCCISH_CXXFLAGS_i386-apple-ios := -fno-rtti $(CFG_IOSSIM_FLAGS_i386-apple-ios) -I$(CFG_IOSSIM_SDK_i386-apple-ios)/usr/include/c++/4.2.1
CFG_GCCISH_LINK_FLAGS_i386-apple-ios := -lpthread -m32 -Wl,-no_compact_unwind -m32 -Wl,-syslibroot $(CFG_IOSSIM_SDK_i386-apple-ios)
CFG_GCCISH_DEF_FLAG_i386-apple-ios := -Wl,-exported_symbols_list,
-CFG_GCCISH_PRE_LIB_FLAGS_i386-apple-ios :=
-CFG_GCCISH_POST_LIB_FLAGS_i386-apple-ios :=
-CFG_DEF_SUFFIX_i386-apple-ios := .darwin.def
CFG_LLC_FLAGS_i386-apple-ios =
CFG_INSTALL_NAME_i386-apple-ios = -Wl,-install_name,@rpath/$(1)
CFG_EXE_SUFFIX_i386-apple-ios :=
CFG_WINDOWSY_i386-apple-ios :=
CFG_UNIXY_i386-apple-ios := 1
-CFG_PATH_MUNGE_i386-apple-ios = :true
CFG_LDPATH_i386-apple-ios =
CFG_RUN_i386-apple-ios = $(2)
CFG_RUN_TARG_i386-apple-ios = $(call CFG_RUN_i386-apple-ios,,$(2))
CFG_GCCISH_CXXFLAGS_i686-apple-darwin := -fno-rtti $(CXXFLAGS)
CFG_GCCISH_LINK_FLAGS_i686-apple-darwin := -dynamiclib -pthread -framework CoreServices -m32
CFG_GCCISH_DEF_FLAG_i686-apple-darwin := -Wl,-exported_symbols_list,
-CFG_GCCISH_PRE_LIB_FLAGS_i686-apple-darwin :=
-CFG_GCCISH_POST_LIB_FLAGS_i686-apple-darwin :=
-CFG_DEF_SUFFIX_i686-apple-darwin := .darwin.def
CFG_LLC_FLAGS_i686-apple-darwin :=
CFG_INSTALL_NAME_i686-apple-darwin = -Wl,-install_name,@rpath/$(1)
CFG_EXE_SUFFIX_i686-apple-darwin :=
CFG_WINDOWSY_i686-apple-darwin :=
CFG_UNIXY_i686-apple-darwin := 1
-CFG_PATH_MUNGE_i686-apple-darwin := true
CFG_LDPATH_i686-apple-darwin :=
CFG_RUN_i686-apple-darwin=$(2)
CFG_RUN_TARG_i686-apple-darwin=$(call CFG_RUN_i686-apple-darwin,,$(2))
CFG_GCCISH_CXXFLAGS_i686-pc-windows-gnu := -fno-rtti $(CXXFLAGS)
CFG_GCCISH_LINK_FLAGS_i686-pc-windows-gnu := -shared -g -m32
CFG_GCCISH_DEF_FLAG_i686-pc-windows-gnu :=
-CFG_GCCISH_PRE_LIB_FLAGS_i686-pc-windows-gnu :=
-CFG_GCCISH_POST_LIB_FLAGS_i686-pc-windows-gnu :=
-CFG_DEF_SUFFIX_i686-pc-windows-gnu := .windows.def
CFG_LLC_FLAGS_i686-pc-windows-gnu :=
CFG_INSTALL_NAME_i686-pc-windows-gnu =
CFG_EXE_SUFFIX_i686-pc-windows-gnu := .exe
CFG_WINDOWSY_i686-pc-windows-gnu := 1
CFG_UNIXY_i686-pc-windows-gnu :=
-CFG_PATH_MUNGE_i686-pc-windows-gnu :=
CFG_LDPATH_i686-pc-windows-gnu :=
CFG_RUN_i686-pc-windows-gnu=$(2)
CFG_RUN_TARG_i686-pc-windows-gnu=$(call CFG_RUN_i686-pc-windows-gnu,,$(2))
CFG_GCCISH_CXXFLAGS_i686-unknown-linux-gnu := -fno-rtti $(CXXFLAGS)
CFG_GCCISH_LINK_FLAGS_i686-unknown-linux-gnu := -shared -fPIC -ldl -pthread -lrt -g -m32
CFG_GCCISH_DEF_FLAG_i686-unknown-linux-gnu := -Wl,--export-dynamic,--dynamic-list=
-CFG_GCCISH_PRE_LIB_FLAGS_i686-unknown-linux-gnu := -Wl,-whole-archive
-CFG_GCCISH_POST_LIB_FLAGS_i686-unknown-linux-gnu := -Wl,-no-whole-archive
-CFG_DEF_SUFFIX_i686-unknown-linux-gnu := .linux.def
CFG_LLC_FLAGS_i686-unknown-linux-gnu :=
CFG_INSTALL_NAME_i686-unknown-linux-gnu =
CFG_EXE_SUFFIX_i686-unknown-linux-gnu =
CFG_WINDOWSY_i686-unknown-linux-gnu :=
CFG_UNIXY_i686-unknown-linux-gnu := 1
-CFG_PATH_MUNGE_i686-unknown-linux-gnu := true
CFG_LDPATH_i686-unknown-linux-gnu :=
CFG_RUN_i686-unknown-linux-gnu=$(2)
CFG_RUN_TARG_i686-unknown-linux-gnu=$(call CFG_RUN_i686-unknown-linux-gnu,,$(2))
CFG_GCCISH_CXXFLAGS_mips-unknown-linux-gnu := -fno-rtti $(CXXFLAGS)
CFG_GCCISH_LINK_FLAGS_mips-unknown-linux-gnu := -shared -fPIC -g -mips32r2 -msoft-float -mabi=32
CFG_GCCISH_DEF_FLAG_mips-unknown-linux-gnu := -Wl,--export-dynamic,--dynamic-list=
-CFG_GCCISH_PRE_LIB_FLAGS_mips-unknown-linux-gnu := -Wl,-whole-archive
-CFG_GCCISH_POST_LIB_FLAGS_mips-unknown-linux-gnu := -Wl,-no-whole-archive
-CFG_DEF_SUFFIX_mips-unknown-linux-gnu := .linux.def
CFG_LLC_FLAGS_mips-unknown-linux-gnu :=
CFG_INSTALL_NAME_mips-unknown-linux-gnu =
CFG_EXE_SUFFIX_mips-unknown-linux-gnu :=
CFG_WINDOWSY_mips-unknown-linux-gnu :=
CFG_UNIXY_mips-unknown-linux-gnu := 1
-CFG_PATH_MUNGE_mips-unknown-linux-gnu := true
CFG_LDPATH_mips-unknown-linux-gnu :=
CFG_RUN_mips-unknown-linux-gnu=
CFG_RUN_TARG_mips-unknown-linux-gnu=
CFG_GCCISH_CXXFLAGS_mipsel-unknown-linux-gnu := -fno-rtti $(CXXFLAGS)
CFG_GCCISH_LINK_FLAGS_mipsel-unknown-linux-gnu := -shared -fPIC -g -mips32
CFG_GCCISH_DEF_FLAG_mipsel-unknown-linux-gnu := -Wl,--export-dynamic,--dynamic-list=
-CFG_GCCISH_PRE_LIB_FLAGS_mipsel-unknown-linux-gnu := -Wl,-whole-archive
-CFG_GCCISH_POST_LIB_FLAGS_mipsel-unknown-linux-gnu := -Wl,-no-whole-archive
-CFG_DEF_SUFFIX_mipsel-unknown-linux-gnu := .linux.def
CFG_LLC_FLAGS_mipsel-unknown-linux-gnu :=
CFG_INSTALL_NAME_mipsel-unknown-linux-gnu =
CFG_EXE_SUFFIX_mipsel-unknown-linux-gnu :=
CFG_WINDOWSY_mipsel-unknown-linux-gnu :=
CFG_UNIXY_mipsel-unknown-linux-gnu := 1
-CFG_PATH_MUNGE_mipsel-unknown-linux-gnu := true
CFG_LDPATH_mipsel-unknown-linux-gnu :=
CFG_RUN_mipsel-unknown-linux-gnu=
CFG_RUN_TARG_mipsel-unknown-linux-gnu=
CFG_GCCISH_CXXFLAGS_powerpc-unknown-linux-gnu := -fno-rtti $(CXXFLAGS)
CFG_GCCISH_LINK_FLAGS_powerpc-unknown-linux-gnu := -shared -fPIC -ldl -pthread -lrt -g -m32
CFG_GCCISH_DEF_FLAG_powerpc-unknown-linux-gnu := -Wl,--export-dynamic,--dynamic-list=
-CFG_GCCISH_PRE_LIB_FLAGS_powerpc-unknown-linux-gnu := -Wl,-whole-archive
-CFG_GCCISH_POST_LIB_FLAGS_powerpc-unknown-linux-gnu := -Wl,-no-whole-archive
-CFG_DEF_SUFFIX_powerpc-unknown-linux-gnu := .linux.def
CFG_LLC_FLAGS_powerpc-unknown-linux-gnu :=
CFG_INSTALL_NAME_powerpc-unknown-linux-gnu =
CFG_EXE_SUFFIX_powerpc-unknown-linux-gnu =
CFG_WINDOWSY_powerpc-unknown-linux-gnu :=
CFG_UNIXY_powerpc-unknown-linux-gnu := 1
-CFG_PATH_MUNGE_powerpc-unknown-linux-gnu := true
CFG_LDPATH_powerpc-unknown-linux-gnu :=
CFG_RUN_powerpc-unknown-linux-gnu=$(2)
CFG_RUN_TARG_powerpc-unknown-linux-gnu=$(call CFG_RUN_powerpc-unknown-linux-gnu,,$(2))
CFG_GCCISH_CXXFLAGS_x86_64-apple-darwin := -fno-rtti $(CXXFLAGS)
CFG_GCCISH_LINK_FLAGS_x86_64-apple-darwin := -dynamiclib -pthread -framework CoreServices -m64
CFG_GCCISH_DEF_FLAG_x86_64-apple-darwin := -Wl,-exported_symbols_list,
-CFG_GCCISH_PRE_LIB_FLAGS_x86_64-apple-darwin :=
-CFG_GCCISH_POST_LIB_FLAGS_x86_64-apple-darwin :=
-CFG_DEF_SUFFIX_x86_64-apple-darwin := .darwin.def
CFG_LLC_FLAGS_x86_64-apple-darwin :=
CFG_INSTALL_NAME_x86_64-apple-darwin = -Wl,-install_name,@rpath/$(1)
CFG_EXE_SUFFIX_x86_64-apple-darwin :=
CFG_WINDOWSY_x86_64-apple-darwin :=
CFG_UNIXY_x86_64-apple-darwin := 1
-CFG_PATH_MUNGE_x86_64-apple-darwin := true
CFG_LDPATH_x86_64-apple-darwin :=
CFG_RUN_x86_64-apple-darwin=$(2)
CFG_RUN_TARG_x86_64-apple-darwin=$(call CFG_RUN_x86_64-apple-darwin,,$(2))
CFG_GCCISH_CXXFLAGS_x86_64-apple-ios := -fno-rtti $(CFG_IOSSIM_FLAGS_x86_64-apple-ios) -I$(CFG_IOSSIM_SDK_x86_64-apple-ios)/usr/include/c++/4.2.1
CFG_GCCISH_LINK_FLAGS_x86_64-apple-ios := -lpthread -Wl,-no_compact_unwind -m64 -Wl,-syslibroot $(CFG_IOSSIM_SDK_x86_64-apple-ios)
CFG_GCCISH_DEF_FLAG_x86_64-apple-ios := -Wl,-exported_symbols_list,
-CFG_GCCISH_PRE_LIB_FLAGS_x86_64-apple-ios :=
-CFG_GCCISH_POST_LIB_FLAGS_x86_64-apple-ios :=
-CFG_DEF_SUFFIX_x86_64-apple-ios := .darwin.def
CFG_LLC_FLAGS_x86_64-apple-ios :=
CFG_INSTALL_NAME_x86_64-apple-ios = -Wl,-install_name,@rpath/$(1)
CFG_LIBUV_LINK_FLAGS_x86_64-apple-ios :=
CFG_EXE_SUFFIX_x86_64-apple-ios :=
CFG_WINDOWSY_x86_64-apple-ios :=
CFG_UNIXY_x86_64-apple-ios := 1
-CFG_PATH_MUNGE_x86_64-apple-ios := true
CFG_LDPATH_x86_64-apple-ios :=
CFG_RUN_x86_64-apple-ios = $(2)
CFG_RUN_TARG_x86_64-apple-ios = $(call CFG_RUN_x86_64-apple-ios,,$(2))
CFG_GCCISH_CXXFLAGS_x86_64-pc-windows-gnu := -fno-rtti $(CXXFLAGS)
CFG_GCCISH_LINK_FLAGS_x86_64-pc-windows-gnu := -shared -g -m64
CFG_GCCISH_DEF_FLAG_x86_64-pc-windows-gnu :=
-CFG_GCCISH_PRE_LIB_FLAGS_x86_64-pc-windows-gnu :=
-CFG_GCCISH_POST_LIB_FLAGS_x86_64-pc-windows-gnu :=
-CFG_DEF_SUFFIX_x86_64-pc-windows-gnu := .windows.def
CFG_LLC_FLAGS_x86_64-pc-windows-gnu :=
CFG_INSTALL_NAME_x86_64-pc-windows-gnu =
CFG_EXE_SUFFIX_x86_64-pc-windows-gnu := .exe
CFG_WINDOWSY_x86_64-pc-windows-gnu := 1
CFG_UNIXY_x86_64-pc-windows-gnu :=
-CFG_PATH_MUNGE_x86_64-pc-windows-gnu :=
CFG_LDPATH_x86_64-pc-windows-gnu :=
CFG_RUN_x86_64-pc-windows-gnu=$(2)
CFG_RUN_TARG_x86_64-pc-windows-gnu=$(call CFG_RUN_x86_64-pc-windows-gnu,,$(2))
CFG_GCCISH_CFLAGS_x86_64-unknown-bitrig := -Wall -Werror -fPIC -m64 -I/usr/include $(CFLAGS)
CFG_GCCISH_LINK_FLAGS_x86_64-unknown-bitrig := -shared -pic -pthread -m64 $(LDFLAGS)
CFG_GCCISH_DEF_FLAG_x86_64-unknown-bitrig := -Wl,--export-dynamic,--dynamic-list=
-CFG_GCCISH_PRE_LIB_FLAGS_x86_64-unknown-bitrig := -Wl,-pic -Wl,-whole-archive
-CFG_GCCISH_POST_LIB_FLAGS_x86_64-unknown-bitrig := -Wl,-no-whole-archive
-CFG_DEF_SUFFIX_x86_64-unknown-bitrig := .bsd.def
CFG_LLC_FLAGS_x86_64-unknown-bitrig :=
CFG_INSTALL_NAME_x86_64-unknown-bitrig =
CFG_EXE_SUFFIX_x86_64-unknown-bitrig :=
CFG_WINDOWSY_x86_64-unknown-bitrig :=
CFG_UNIXY_x86_64-unknown-bitrig := 1
-CFG_PATH_MUNGE_x86_64-unknown-bitrig :=
CFG_LDPATH_x86_64-unknown-bitrig :=
CFG_RUN_x86_64-unknown-bitrig=$(2)
CFG_RUN_TARG_x86_64-unknown-bitrig=$(call CFG_RUN_x86_64-unknown-bitrig,,$(2))
CFG_GCCISH_CFLAGS_x86_64-unknown-dragonfly := -Wall -Werror -g -fPIC -m64 -I/usr/include -I/usr/local/include $(CFLAGS)
CFG_GCCISH_LINK_FLAGS_x86_64-unknown-dragonfly := -shared -fPIC -g -pthread -lrt -m64
CFG_GCCISH_DEF_FLAG_x86_64-unknown-dragonfly := -Wl,--export-dynamic,--dynamic-list=
-CFG_GCCISH_PRE_LIB_FLAGS_x86_64-unknown-dragonfly := -Wl,-whole-archive
-CFG_GCCISH_POST_LIB_FLAGS_x86_64-unknown-dragonfly := -Wl,-no-whole-archive
-CFG_DEF_SUFFIX_x86_64-unknown-dragonfly := .bsd.def
CFG_LLC_FLAGS_x86_64-unknown-dragonfly :=
CFG_INSTALL_NAME_x86_64-unknown-dragonfly =
CFG_EXE_SUFFIX_x86_64-unknown-dragonfly :=
CFG_WINDOWSY_x86_64-unknown-dragonfly :=
CFG_UNIXY_x86_64-unknown-dragonfly := 1
-CFG_PATH_MUNGE_x86_64-unknown-dragonfly :=
CFG_LDPATH_x86_64-unknown-dragonfly :=
CFG_RUN_x86_64-unknown-dragonfly=$(2)
CFG_RUN_TARG_x86_64-unknown-dragonfly=$(call CFG_RUN_x86_64-unknown-dragonfly,,$(2))
CFG_GCCISH_CFLAGS_x86_64-unknown-freebsd := -Wall -Werror -g -fPIC -I/usr/local/include $(CFLAGS)
CFG_GCCISH_LINK_FLAGS_x86_64-unknown-freebsd := -shared -fPIC -g -pthread -lrt
CFG_GCCISH_DEF_FLAG_x86_64-unknown-freebsd := -Wl,--export-dynamic,--dynamic-list=
-CFG_GCCISH_PRE_LIB_FLAGS_x86_64-unknown-freebsd := -Wl,-whole-archive
-CFG_GCCISH_POST_LIB_FLAGS_x86_64-unknown-freebsd := -Wl,-no-whole-archive
-CFG_DEF_SUFFIX_x86_64-unknown-freebsd := .bsd.def
CFG_LLC_FLAGS_x86_64-unknown-freebsd :=
CFG_INSTALL_NAME_x86_64-unknown-freebsd =
CFG_EXE_SUFFIX_x86_64-unknown-freebsd :=
CFG_WINDOWSY_x86_64-unknown-freebsd :=
CFG_UNIXY_x86_64-unknown-freebsd := 1
-CFG_PATH_MUNGE_x86_64-unknown-freebsd :=
CFG_LDPATH_x86_64-unknown-freebsd :=
CFG_RUN_x86_64-unknown-freebsd=$(2)
CFG_RUN_TARG_x86_64-unknown-freebsd=$(call CFG_RUN_x86_64-unknown-freebsd,,$(2))
CFG_GCCISH_CXXFLAGS_x86_64-unknown-linux-gnu := -fno-rtti
CFG_GCCISH_LINK_FLAGS_x86_64-unknown-linux-gnu := -shared -fPIC -ldl -pthread -lrt -g -m64
CFG_GCCISH_DEF_FLAG_x86_64-unknown-linux-gnu := -Wl,--export-dynamic,--dynamic-list=
-CFG_GCCISH_PRE_LIB_FLAGS_x86_64-unknown-linux-gnu := -Wl,-whole-archive
-CFG_GCCISH_POST_LIB_FLAGS_x86_64-unknown-linux-gnu := -Wl,-no-whole-archive
-CFG_DEF_SUFFIX_x86_64-unknown-linux-gnu := .linux.def
CFG_LLC_FLAGS_x86_64-unknown-linux-gnu :=
CFG_INSTALL_NAME_x86_64-unknown-linux-gnu =
CFG_EXE_SUFFIX_x86_64-unknown-linux-gnu =
CFG_WINDOWSY_x86_64-unknown-linux-gnu :=
CFG_UNIXY_x86_64-unknown-linux-gnu := 1
-CFG_PATH_MUNGE_x86_64-unknown-linux-gnu := true
CFG_LDPATH_x86_64-unknown-linux-gnu :=
CFG_RUN_x86_64-unknown-linux-gnu=$(2)
CFG_RUN_TARG_x86_64-unknown-linux-gnu=$(call CFG_RUN_x86_64-unknown-linux-gnu,,$(2))
--- /dev/null
+# x86_64-unknown-linux-musl configuration
+CC_x86_64-unknown-linux-musl=$(CFG_MUSL_ROOT)/bin/musl-gcc
+CXX_x86_64-unknown-linux-musl=notaprogram
+CPP_x86_64-unknown-linux-musl=$(CFG_MUSL_ROOT)/bin/musl-gcc -E
+AR_x86_64-unknown-linux-musl=$(AR)
+CFG_LIB_NAME_x86_64-unknown-linux-musl=lib$(1).so
+CFG_STATIC_LIB_NAME_x86_64-unknown-linux-musl=lib$(1).a
+CFG_LIB_GLOB_x86_64-unknown-linux-musl=lib$(1)-*.so
+CFG_JEMALLOC_CFLAGS_x86_64-unknown-linux-musl := -m64
+CFG_GCCISH_CFLAGS_x86_64-unknown-linux-musl := -Wall -Werror -g -fPIC -m64
+CFG_GCCISH_CXXFLAGS_x86_64-unknown-linux-musl :=
+CFG_GCCISH_LINK_FLAGS_x86_64-unknown-linux-musl :=
+CFG_GCCISH_DEF_FLAG_x86_64-unknown-linux-musl :=
+CFG_LLC_FLAGS_x86_64-unknown-linux-musl :=
+CFG_INSTALL_NAME_x86_64-unknown-linux-musl =
+CFG_EXE_SUFFIX_x86_64-unknown-linux-musl =
+CFG_WINDOWSY_x86_64-unknown-linux-musl :=
+CFG_UNIXY_x86_64-unknown-linux-musl := 1
+CFG_LDPATH_x86_64-unknown-linux-musl :=
+CFG_RUN_x86_64-unknown-linux-musl=$(2)
+CFG_RUN_TARG_x86_64-unknown-linux-musl=$(call CFG_RUN_x86_64-unknown-linux-musl,,$(2))
+CFG_GNU_TRIPLE_x86_64-unknown-linux-musl := x86_64-unknown-linux-musl
+
+NATIVE_DEPS_libc_T_x86_64-unknown-linux-musl += libc.a
+NATIVE_DEPS_std_T_x86_64-unknown-linux-musl += libunwind.a \
+ crt1.o crti.o crtn.o
+INSTALLED_OBJECTS_x86_64-unknown-linux-musl += crt1.o crti.o crtn.o
CFG_GCCISH_CFLAGS_x86_64-unknown-openbsd := -Wall -Werror -g -fPIC -m64 -I/usr/include $(CFLAGS)
CFG_GCCISH_LINK_FLAGS_x86_64-unknown-openbsd := -shared -fPIC -g -pthread -m64
CFG_GCCISH_DEF_FLAG_x86_64-unknown-openbsd := -Wl,--export-dynamic,--dynamic-list=
-CFG_GCCISH_PRE_LIB_FLAGS_x86_64-unknown-openbsd := -Wl,-whole-archive
-CFG_GCCISH_POST_LIB_FLAGS_x86_64-unknown-openbsd := -Wl,-no-whole-archive
-CFG_DEF_SUFFIX_x86_64-unknown-openbsd := .bsd.def
CFG_LLC_FLAGS_x86_64-unknown-openbsd :=
CFG_INSTALL_NAME_x86_64-unknown-openbsd =
CFG_EXE_SUFFIX_x86_64-unknown-openbsd :=
CFG_WINDOWSY_x86_64-unknown-openbsd :=
CFG_UNIXY_x86_64-unknown-openbsd := 1
-CFG_PATH_MUNGE_x86_64-unknown-openbsd :=
CFG_LDPATH_x86_64-unknown-openbsd :=
CFG_RUN_x86_64-unknown-openbsd=$(2)
CFG_RUN_TARG_x86_64-unknown-openbsd=$(call CFG_RUN_x86_64-unknown-openbsd,,$(2))
# Documented-by-default crates
DOC_CRATES := std alloc collections core libc rustc_unicode
+# Installed objects/libraries by default
+INSTALLED_OBJECTS := libmorestack.a libcompiler-rt.a
+
################################################################################
# You should not need to edit below this line
################################################################################
# Prerequisites for using the stageN compiler to build target artifacts
TSREQ$(1)_T_$(2)_H_$(3) = \
$$(HSREQ$(1)_H_$(3)) \
- $$(TLIB$(1)_T_$(2)_H_$(3))/libmorestack.a \
- $$(TLIB$(1)_T_$(2)_H_$(3))/libcompiler-rt.a
+ $$(foreach obj,$$(INSTALLED_OBJECTS),\
+ $$(TLIB$(1)_T_$(2)_H_$(3))/$$(obj)) \
+ $$(foreach obj,$$(INSTALLED_OBJECTS_$(2)),\
+ $$(TLIB$(1)_T_$(2)_H_$(3))/$$(obj))
# Prerequisites for a working stageN compiler and libraries, for a specific
# target
$$(if $$(findstring $(2),$$(CFG_HOST)), \
$$(foreach crate,$$(HOST_CRATES), \
$$(call PREPARE_LIB,$$(call CFG_LIB_GLOB_$(2),$$(crate)))),) \
- $$(call PREPARE_LIB,libmorestack.a) \
- $$(call PREPARE_LIB,libcompiler-rt.a),),),)
+ $$(foreach object,$$(INSTALLED_OBJECTS) $$(INSTALLED_OBJECTS_$(2)),\
+ $$(call PREPARE_LIB,$$(object))),),),)
endef
define INSTALL_GDB_DEBUGGER_SCRIPTS_COMMANDS
@mkdir -p $$(@D)
@$$(call E, compile: $$@)
$$(Q)$$(LLC_$$(CFG_BUILD)) $$(CFG_LLC_FLAGS_$(1)) \
- -filetype=obj -mtriple=$$(CFG_LLVM_TARGET_$(1)) -relocation-model=pic -o $$@ $$<
+ -filetype=obj -mtriple=$$(CFG_LLVM_TARGET_$(1)) \
+ -relocation-model=pic -o $$@ $$<
$$(RT_OUTPUT_DIR_$(1))/%.o: $(S)src/rt/%.c $$(MKFILE_DEPS)
@mkdir -p $$(@D)
@$$(call E, link: $$@)
$$(Q)$$(AR_$(1)) rcs $$@ $$^
+ifeq ($$(findstring windows,$(1)),windows)
+$$(RT_OUTPUT_DIR_$(1))/lib$(2).a: $$(RT_OUTPUT_DIR_$(1))/$$(NATIVE_$(2)_$(1))
+ $$(Q)cp $$^ $$@
+endif
+
endef
$(foreach target,$(CFG_TARGET), \
$(S)src/compiler-rt/*/*/*/*)
endif
-COMPRT_NAME_$(1) := $$(call CFG_STATIC_LIB_NAME_$(1),compiler-rt)
+COMPRT_NAME_$(1) := libcompiler-rt.a
COMPRT_LIB_$(1) := $$(RT_OUTPUT_DIR_$(1))/$$(COMPRT_NAME_$(1))
COMPRT_BUILD_DIR_$(1) := $$(RT_OUTPUT_DIR_$(1))/compiler-rt
endif # endif for ios
endif # endif for darwin
+################################################################################
+# libc/libunwind for musl
+#
+# When we're building a musl-like target we're going to link libc/libunwind
+# statically into the standard library and liblibc, so we need to make sure
+# they're in a location that we can find
+################################################################################
+
+ifeq ($$(findstring musl,$(1)),musl)
+$$(RT_OUTPUT_DIR_$(1))/%: $$(CFG_MUSL_ROOT)/lib/%
+ cp $$^ $$@
+endif
+
endef
# Instantiate template for all stages/targets
RUSTLLVM_OBJS_CS_$(1) := $$(addprefix rustllvm/, \
ExecutionEngineWrapper.cpp RustWrapper.cpp PassWrapper.cpp)
-RUSTLLVM_DEF_$(1) := $(1)/rustllvm/rustllvm$(CFG_DEF_SUFFIX_$(1))
-
RUSTLLVM_INCS_$(1) = $$(LLVM_EXTRA_INCDIRS_$(1)) \
-iquote $$(LLVM_INCDIR_$(1)) \
-iquote $$(S)src/rustllvm/include
$$(foreach dep,$$(RUST_DEPS_$(4)), \
$$(TLIB$(1)_T_$(2)_H_$(3))/stamp.$$(dep)) \
$$(foreach dep,$$(NATIVE_DEPS_$(4)), \
- $$(RT_OUTPUT_DIR_$(2))/$$(call CFG_STATIC_LIB_NAME_$(2),$$(dep)))
+ $$(RT_OUTPUT_DIR_$(2))/$$(call CFG_STATIC_LIB_NAME_$(2),$$(dep))) \
+ $$(foreach dep,$$(NATIVE_DEPS_$(4)_T_$(2)), \
+ $$(RT_OUTPUT_DIR_$(2))/$$(dep))
endef
$(foreach host,$(CFG_HOST), \
$$(TLIB$(1)_T_$(2)_H_$(3))/:
mkdir -p $$@
-$$(TLIB$(1)_T_$(2)_H_$(3))/libcompiler-rt.a: \
- $$(RT_OUTPUT_DIR_$(2))/$$(call CFG_STATIC_LIB_NAME_$(2),compiler-rt) \
- | $$(TLIB$(1)_T_$(2)_H_$(3))/ $$(SNAPSHOT_RUSTC_POST_CLEANUP)
- @$$(call E, cp: $$@)
- $$(Q)cp $$< $$@
-
-$$(TLIB$(1)_T_$(2)_H_$(3))/libmorestack.a: \
- $$(RT_OUTPUT_DIR_$(2))/$$(call CFG_STATIC_LIB_NAME_$(2),morestack) \
+$$(TLIB$(1)_T_$(2)_H_$(3))/%: $$(RT_OUTPUT_DIR_$(2))/% \
| $$(TLIB$(1)_T_$(2)_H_$(3))/ $$(SNAPSHOT_RUSTC_POST_CLEANUP)
@$$(call E, cp: $$@)
$$(Q)cp $$< $$@
format!("ignore-{}",
config.stage_id.split('-').next().unwrap())
}
+ fn ignore_env(config: &Config) -> String {
+ format!("ignore-{}", util::get_env(&config.target).unwrap_or("<unknown>"))
+ }
fn ignore_gdb(config: &Config, line: &str) -> bool {
if config.mode != common::DebugInfoGdb {
return false;
!parse_name_directive(ln, &ignore_target(config)) &&
!parse_name_directive(ln, &ignore_architecture(config)) &&
!parse_name_directive(ln, &ignore_stage(config)) &&
+ !parse_name_directive(ln, &ignore_env(config)) &&
!(config.mode == common::Pretty && parse_name_directive(ln, "ignore-pretty")) &&
!(config.target != config.host && parse_name_directive(ln, "ignore-cross-compile")) &&
!ignore_gdb(config, ln) &&
let mut crate_type = if aux_props.no_prefer_dynamic {
Vec::new()
} else {
- vec!("--crate-type=dylib".to_string())
+ // We primarily compile all auxiliary libraries as dynamic libraries
+ // to avoid code size bloat and large binaries as much as possible
+ // for the test suite (otherwise including libstd statically in all
+ // executables takes up quite a bit of space).
+ //
+ // For targets like MUSL, however, there is no support for dynamic
+ // libraries so we just go back to building a normal library. Note,
+ // however, that if the library is built with `force_host` then it's
+ // ok to be a dylib as the host should always support dylibs.
+ if config.target.contains("musl") && !aux_props.force_host {
+ vec!("--crate-type=lib".to_string())
+ } else {
+ vec!("--crate-type=dylib".to_string())
+ }
};
crate_type.extend(extra_link_args.clone().into_iter());
let aux_args =
panic!("Cannot determine Architecture from triple");
}
+pub fn get_env(triple: &str) -> Option<&str> {
+ triple.split('-').nth(3)
+}
+
pub fn make_new_path(path: &str) -> String {
assert!(cfg!(windows));
// Windows just uses PATH as the library search path, so we have to
// #18540, use a single token
+ var a = document.createElement("a");
+ a.href = "http://doc.rust-lang.org/core/?search=" + encodeURIComponent(lt);
+ a.textContent = lt;
var search = document.getElementById('core-search');
- search.innerHTML = "<a href=\"http://doc.rust-lang.org/core/?search=" + lt + "\">" + lt + "</a>";
+ search.innerHTML = "";
+ search.appendChild(a);
}
populate_site_search();
populate_rust_search();
## Whitespace
-Whitespace is any non-empty string containing any the following characters:
+Whitespace is any non-empty string containing only the following characters:
- `U+0020` (space, `' '`)
- `U+0009` (tab, `'\t'`)
There are two kinds of configuration options, one that is either defined or not
(`#[cfg(foo)]`), and the other that contains a string that can be checked
-against (`#[cfg(bar = "baz")]` (currently only compiler-defined configuration
-options can have the latter form).
+against (`#[cfg(bar = "baz")]`). Currently, only compiler-defined configuration
+options can have the latter form.
```
// The function is only included in the build when compiling for OSX
```text
error: cannot borrow `x` as mutable because it is also borrowed as immutable
- x.push(4);
+ x.push("foo");
^
note: previous borrow of `x` occurs here; the immutable borrow prevents
subsequent moves or mutable borrows of `x` until the borrow ends
The form of UFCS we just talked about:
```rust,ignore
-Type::method(args);
+Trait::method(args);
```
Is a short-hand. There’s an expanded form of this that’s needed in some
}
}
-#[unsafe_destructor]
#[stable(feature = "rust1", since = "1.0.0")]
impl<T> Drop for Arc<T> {
/// Drops the `Arc<T>`.
}
}
-#[unsafe_destructor]
#[stable(feature = "rust1", since = "1.0.0")]
impl<T> Drop for Weak<T> {
/// Drops the `Weak<T>`.
}
// -lpthread needs to occur after -ljemalloc, the earlier argument isn't enough
- #[cfg(all(not(windows), not(target_os = "android")))]
+ #[cfg(all(not(windows),
+ not(target_os = "android"),
+ not(target_env = "musl")))]
#[link(name = "pthread")]
extern {}
#![feature(allocator)]
#![feature(custom_attribute)]
#![feature(fundamental)]
-#![feature(lang_items, unsafe_destructor)]
+#![feature(lang_items)]
#![feature(box_syntax)]
#![feature(optin_builtin_traits)]
#![feature(unboxed_closures)]
}
}
-#[unsafe_destructor]
#[stable(feature = "rust1", since = "1.0.0")]
impl<T> Drop for Rc<T> {
/// Drops the `Rc<T>`.
}
}
-#[unsafe_destructor]
#[stable(feature = "rust1", since = "1.0.0")]
impl<T> Drop for Weak<T> {
/// Drops the `Weak<T>`.
#![feature(core)]
#![feature(staged_api)]
#![feature(unboxed_closures)]
-#![feature(unsafe_destructor)]
#![cfg_attr(test, feature(test))]
extern crate alloc;
}
}
-#[unsafe_destructor]
impl<'longer_than_self> Drop for Arena<'longer_than_self> {
fn drop(&mut self) {
unsafe {
}
}
-#[unsafe_destructor]
impl<T> Drop for TypedArena<T> {
fn drop(&mut self) {
unsafe {
#[unstable(feature = "collections",
reason = "matches collection reform specification, waiting for dust to settle")]
pub fn drain(&mut self) -> Drain<T> {
- Drain { iter: self.data.drain() }
+ Drain { iter: self.data.drain(..) }
}
/// Drops all items from the binary heap.
}
}
-#[unsafe_destructor]
impl<T> Drop for RawItems<T> {
fn drop(&mut self) {
for _ in self.by_ref() {}
}
}
-#[unsafe_destructor]
impl<K, V> Drop for Node<K, V> {
fn drop(&mut self) {
if self.keys.is_null() ||
}
}
-#[unsafe_destructor]
impl<K, V> Drop for MoveTraversalImpl<K, V> {
fn drop(&mut self) {
// We need to cleanup the stored values manually, as the RawItems destructor would run
#![feature(staged_api)]
#![feature(unboxed_closures)]
#![feature(unicode)]
-#![feature(unsafe_destructor)]
#![feature(unique)]
#![feature(unsafe_no_drop_flag, filling_drop)]
#![feature(step_by)]
#![feature(slice_patterns)]
#![feature(debug_builders)]
#![feature(utf8_error)]
-#![cfg_attr(test, feature(rand, rustc_private, test, hash, collections))]
+#![cfg_attr(test, feature(rand, rustc_private, test, hash, collections,
+ collections_drain, collections_range))]
#![cfg_attr(test, allow(deprecated))] // rand
#![feature(no_std)]
pub mod enum_set;
pub mod fmt;
pub mod linked_list;
+pub mod range;
pub mod slice;
pub mod str;
pub mod string;
}
}
-#[unsafe_destructor]
#[stable(feature = "rust1", since = "1.0.0")]
impl<T> Drop for LinkedList<T> {
fn drop(&mut self) {
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+#![unstable(feature = "collections_range", reason = "was just added")]
+
+//! Range syntax.
+
+use core::option::Option::{self, None, Some};
+use core::ops::{RangeFull, Range, RangeTo, RangeFrom};
+
+/// **RangeArgument** is implemented by Rust's built-in range types, produced
+/// by range syntax like `..`, `a..`, `..b` or `c..d`.
+pub trait RangeArgument<T> {
+ /// Start index (inclusive)
+ ///
+ /// Return start value if present, else `None`.
+ fn start(&self) -> Option<&T> { None }
+
+ /// End index (exclusive)
+ ///
+ /// Return end value if present, else `None`.
+ fn end(&self) -> Option<&T> { None }
+}
+
+
+impl<T> RangeArgument<T> for RangeFull {}
+
+impl<T> RangeArgument<T> for RangeFrom<T> {
+ fn start(&self) -> Option<&T> { Some(&self.start) }
+}
+
+impl<T> RangeArgument<T> for RangeTo<T> {
+ fn end(&self) -> Option<&T> { Some(&self.end) }
+}
+
+impl<T> RangeArgument<T> for Range<T> {
+ fn start(&self) -> Option<&T> { Some(&self.start) }
+ fn end(&self) -> Option<&T> { Some(&self.end) }
+}
use borrow::{Cow, IntoCow};
+use super::range::RangeArgument;
+
// FIXME- fix places which assume the max vector allowed has memory usize::MAX.
static MAX_MEMORY_SIZE: usize = isize::MAX as usize;
unsafe { other.set_len(0); }
}
- /// Creates a draining iterator that clears the `Vec` and iterates over
- /// the removed items from start to end.
+ /// Create a draining iterator that removes the specified range in the vector
+ /// and yields the removed items from start to end. The element range is
+ /// removed even if the iterator is not consumed until the end.
+ ///
+ /// Note: It is unspecified how many elements are removed from the vector,
+ /// if the `Drain` value is leaked.
+ ///
+ /// # Panics
+ ///
+ /// Panics if the starting point is greater than the end point or if
+ /// the end point is greater than the length of the vector.
///
/// # Examples
///
/// ```
- /// # #![feature(collections)]
- /// let mut v = vec!["a".to_string(), "b".to_string()];
- /// for s in v.drain() {
- /// // s has type String, not &String
- /// println!("{}", s);
- /// }
- /// assert!(v.is_empty());
+ /// # #![feature(collections_drain, collections_range)]
+ ///
+ /// // Draining using `..` clears the whole vector.
+ /// let mut v = vec![1, 2, 3];
+ /// let u: Vec<_> = v.drain(..).collect();
+ /// assert_eq!(v, &[]);
+ /// assert_eq!(u, &[1, 2, 3]);
/// ```
- #[inline]
- #[unstable(feature = "collections",
- reason = "matches collection reform specification, waiting for dust to settle")]
- pub fn drain(&mut self) -> Drain<T> {
+ #[unstable(feature = "collections_drain",
+ reason = "recently added, matches RFC")]
+ pub fn drain<R>(&mut self, range: R) -> Drain<T> where R: RangeArgument<usize> {
+ // Memory safety
+ //
+ // When the Drain is first created, it shortens the length of
+ // the source vector to make sure no uninitalized or moved-from elements
+ // are accessible at all if the Drain's destructor never gets to run.
+ //
+ // Drain will ptr::read out the values to remove.
+ // When finished, remaining tail of the vec is copied back to cover
+ // the hole, and the vector length is restored to the new length.
+ //
+ let len = self.len();
+ let start = *range.start().unwrap_or(&0);
+ let end = *range.end().unwrap_or(&len);
+ assert!(start <= end);
+ assert!(end <= len);
+
unsafe {
- let begin = *self.ptr as *const T;
- let end = if mem::size_of::<T>() == 0 {
- (*self.ptr as usize + self.len()) as *const T
- } else {
- (*self.ptr).offset(self.len() as isize) as *const T
- };
- self.set_len(0);
+ // set self.vec length's to start, to be safe in case Drain is leaked
+ self.set_len(start);
+ // Use the borrow in the IterMut to indicate borrowing behavior of the
+ // whole Drain iterator (like &mut T).
+ let range_slice = slice::from_raw_parts_mut(
+ self.as_mut_ptr().offset(start as isize),
+ end - start);
Drain {
- ptr: begin,
- end: end,
- marker: PhantomData,
+ tail_start: end,
+ tail_len: len - end,
+ iter: range_slice.iter_mut(),
+ vec: self as *mut _,
}
}
}
}
}
-#[unsafe_destructor]
#[stable(feature = "rust1", since = "1.0.0")]
impl<T> Drop for Vec<T> {
fn drop(&mut self) {
#[stable(feature = "rust1", since = "1.0.0")]
impl<T> ExactSizeIterator for IntoIter<T> {}
-#[unsafe_destructor]
#[stable(feature = "rust1", since = "1.0.0")]
impl<T> Drop for IntoIter<T> {
fn drop(&mut self) {
}
}
-/// An iterator that drains a vector.
-#[unsafe_no_drop_flag]
-#[unstable(feature = "collections",
- reason = "recently added as part of collections reform 2")]
-pub struct Drain<'a, T:'a> {
- ptr: *const T,
- end: *const T,
- marker: PhantomData<&'a T>,
+/// A draining iterator for `Vec<T>`.
+#[unstable(feature = "collections_drain", reason = "recently added")]
+pub struct Drain<'a, T: 'a> {
+ /// Index of tail to preserve
+ tail_start: usize,
+ /// Length of tail
+ tail_len: usize,
+ /// Current remaining range to remove
+ iter: slice::IterMut<'a, T>,
+ vec: *mut Vec<T>,
}
unsafe impl<'a, T: Sync> Sync for Drain<'a, T> {}
#[inline]
fn next(&mut self) -> Option<T> {
- unsafe {
- if self.ptr == self.end {
- None
- } else {
- if mem::size_of::<T>() == 0 {
- // purposefully don't use 'ptr.offset' because for
- // vectors with 0-size elements this would return the
- // same pointer.
- self.ptr = mem::transmute(self.ptr as usize + 1);
-
- // Use a non-null pointer value
- Some(ptr::read(EMPTY as *mut T))
- } else {
- let old = self.ptr;
- self.ptr = self.ptr.offset(1);
-
- Some(ptr::read(old))
- }
+ self.iter.next().map(|elt|
+ unsafe {
+ ptr::read(elt as *const _)
}
- }
+ )
}
- #[inline]
fn size_hint(&self) -> (usize, Option<usize>) {
- let diff = (self.end as usize) - (self.ptr as usize);
- let size = mem::size_of::<T>();
- let exact = diff / (if size == 0 {1} else {size});
- (exact, Some(exact))
+ self.iter.size_hint()
}
}
impl<'a, T> DoubleEndedIterator for Drain<'a, T> {
#[inline]
fn next_back(&mut self) -> Option<T> {
- unsafe {
- if self.end == self.ptr {
- None
- } else {
- if mem::size_of::<T>() == 0 {
- // See above for why 'ptr.offset' isn't used
- self.end = mem::transmute(self.end as usize - 1);
-
- // Use a non-null pointer value
- Some(ptr::read(EMPTY as *mut T))
- } else {
- self.end = self.end.offset(-1);
-
- Some(ptr::read(self.end))
- }
+ self.iter.next_back().map(|elt|
+ unsafe {
+ ptr::read(elt as *const _)
}
- }
+ )
}
}
-#[stable(feature = "rust1", since = "1.0.0")]
-impl<'a, T> ExactSizeIterator for Drain<'a, T> {}
-
-#[unsafe_destructor]
#[stable(feature = "rust1", since = "1.0.0")]
impl<'a, T> Drop for Drain<'a, T> {
fn drop(&mut self) {
- // self.ptr == self.end == mem::POST_DROP_USIZE if drop has already been called,
- // so we can use #[unsafe_no_drop_flag].
+ // exhaust self first
+ while let Some(_) = self.next() { }
- // destroy the remaining elements
- for _x in self.by_ref() {}
+ if self.tail_len > 0 {
+ unsafe {
+ let source_vec = &mut *self.vec;
+ // memmove back untouched tail, update to new length
+ let start = source_vec.len();
+ let tail = self.tail_start;
+ let src = source_vec.as_ptr().offset(tail as isize);
+ let dst = source_vec.as_mut_ptr().offset(start as isize);
+ ptr::copy(src, dst, self.tail_len);
+ source_vec.set_len(start + self.tail_len);
+ }
+ }
}
}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl<'a, T> ExactSizeIterator for Drain<'a, T> {}
+
////////////////////////////////////////////////////////////////////////////////
// Conversion from &[T] to &Vec<T>
////////////////////////////////////////////////////////////////////////////////
}
// Prevent the inner `Vec<T>` from attempting to deallocate memory.
-#[unsafe_destructor]
#[stable(feature = "rust1", since = "1.0.0")]
impl<'a, T> Drop for DerefVec<'a, T> {
fn drop(&mut self) {
marker: PhantomData<::core::cell::Cell<(T,U)>>,
}
-#[unsafe_destructor]
impl<T,U> Drop for PartialVecNonZeroSized<T,U> {
fn drop(&mut self) {
unsafe {
}
}
-#[unsafe_destructor]
impl<T,U> Drop for PartialVecZeroSized<T,U> {
fn drop(&mut self) {
unsafe {
}
}
-#[unsafe_destructor]
#[stable(feature = "rust1", since = "1.0.0")]
impl<T> Drop for VecDeque<T> {
fn drop(&mut self) {
inner: &'a mut VecDeque<T>,
}
-#[unsafe_destructor]
#[stable(feature = "rust1", since = "1.0.0")]
impl<'a, T: 'a> Drop for Drain<'a, T> {
fn drop(&mut self) {
}
let filter: fn((usize, Option<V>)) -> Option<(usize, V)> = filter; // coerce to fn ptr
- Drain { iter: self.v.drain().enumerate().filter_map(filter) }
+ Drain { iter: self.v.drain(..).enumerate().filter_map(filter) }
}
/// Returns the number of elements in the map.
#![feature(box_syntax)]
#![feature(collections)]
+#![feature(collections_drain)]
#![feature(core)]
#![feature(hash)]
#![feature(rand)]
#![feature(test)]
#![feature(unboxed_closures)]
#![feature(unicode)]
-#![feature(unsafe_destructor)]
#![feature(into_cow)]
#![feature(step_by)]
#![cfg_attr(test, feature(str_char))]
count: &'a mut u32
}
-#[unsafe_destructor]
impl<'a> Drop for DropCounter<'a> {
fn drop(&mut self) {
*self.count += 1;
fn test_drain_items() {
let mut vec = vec![1, 2, 3];
let mut vec2 = vec![];
- for i in vec.drain() {
+ for i in vec.drain(..) {
vec2.push(i);
}
assert_eq!(vec, []);
fn test_drain_items_reverse() {
let mut vec = vec![1, 2, 3];
let mut vec2 = vec![];
- for i in vec.drain().rev() {
+ for i in vec.drain(..).rev() {
vec2.push(i);
}
assert_eq!(vec, []);
fn test_drain_items_zero_sized() {
let mut vec = vec![(), (), ()];
let mut vec2 = vec![];
- for i in vec.drain() {
+ for i in vec.drain(..) {
vec2.push(i);
}
assert_eq!(vec, []);
assert_eq!(vec2, [(), (), ()]);
}
+#[test]
+#[should_panic]
+fn test_drain_out_of_bounds() {
+ let mut v = vec![1, 2, 3, 4, 5];
+ v.drain(5..6);
+}
+
+#[test]
+fn test_drain_range() {
+ let mut v = vec![1, 2, 3, 4, 5];
+ for _ in v.drain(4..) {
+ }
+ assert_eq!(v, &[1, 2, 3, 4]);
+
+ let mut v: Vec<_> = (1..6).map(|x| x.to_string()).collect();
+ for _ in v.drain(1..4) {
+ }
+ assert_eq!(v, &[1.to_string(), 5.to_string()]);
+
+ let mut v: Vec<_> = (1..6).map(|x| x.to_string()).collect();
+ for _ in v.drain(1..4).rev() {
+ }
+ assert_eq!(v, &[1.to_string(), 5.to_string()]);
+
+ let mut v: Vec<_> = vec![(); 5];
+ for _ in v.drain(1..4).rev() {
+ }
+ assert_eq!(v, &[(), ()]);
+}
+
#[test]
fn test_into_boxed_slice() {
let xs = vec![1, 2, 3];
}
}
-#[unsafe_destructor]
impl<'b> Drop for BorrowRef<'b> {
#[inline]
fn drop(&mut self) {
_borrow: &'b Cell<BorrowFlag>,
}
-#[unsafe_destructor]
impl<'b> Drop for BorrowRefMut<'b> {
#[inline]
fn drop(&mut self) {
mod float;
mod builders;
-#[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
-#[cfg_attr(not(stage0), unstable(feature = "core", reason = "internal to format_args!"))]
+#[unstable(feature = "core", reason = "internal to format_args!")]
#[doc(hidden)]
pub mod rt {
pub mod v1;
/// compile time it is ensured that the function and the value have the correct
/// types, and then this struct is used to canonicalize arguments to one type.
#[derive(Copy)]
-#[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
-#[cfg_attr(not(stage0), unstable(feature = "core", reason = "internal to format_args!"))]
+#[unstable(feature = "core", reason = "internal to format_args!")]
#[doc(hidden)]
pub struct ArgumentV1<'a> {
value: &'a Void,
}
#[doc(hidden)]
- #[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
- #[cfg_attr(not(stage0), unstable(feature = "core", reason = "internal to format_args!"))]
+ #[unstable(feature = "core", reason = "internal to format_args!")]
pub fn new<'b, T>(x: &'b T,
f: fn(&T, &mut Formatter) -> Result) -> ArgumentV1<'b> {
unsafe {
}
#[doc(hidden)]
- #[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
- #[cfg_attr(not(stage0), unstable(feature = "core", reason = "internal to format_args!"))]
+ #[unstable(feature = "core", reason = "internal to format_args!")]
pub fn from_usize(x: &usize) -> ArgumentV1 {
ArgumentV1::new(x, ArgumentV1::show_usize)
}
/// When using the format_args!() macro, this function is used to generate the
/// Arguments structure.
#[doc(hidden)] #[inline]
- #[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
- #[cfg_attr(not(stage0), unstable(feature = "core", reason = "internal to format_args!"))]
+ #[unstable(feature = "core", reason = "internal to format_args!")]
pub fn new_v1(pieces: &'a [&'a str],
args: &'a [ArgumentV1<'a>]) -> Arguments<'a> {
Arguments {
/// created with `argumentusize`. However, failing to do so doesn't cause
/// unsafety, but will ignore invalid .
#[doc(hidden)] #[inline]
- #[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
- #[cfg_attr(not(stage0), unstable(feature = "core", reason = "internal to format_args!"))]
+ #[unstable(feature = "core", reason = "internal to format_args!")]
pub fn new_v1_formatted(pieces: &'a [&'a str],
args: &'a [ArgumentV1<'a>],
fmt: &'a [rt::v1::Argument]) -> Arguments<'a> {
//! These definitions are similar to their `ct` equivalents, but differ in that
//! these can be statically allocated and are slightly optimized for the runtime
-#![cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
-#![cfg_attr(not(stage0), unstable(feature = "core", reason = "internal to format_args!"))]
+#![unstable(feature = "core", reason = "internal to format_args!")]
#[derive(Copy, Clone)]
-#[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
pub struct Argument {
- #[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
pub position: Position,
- #[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
pub format: FormatSpec,
}
#[derive(Copy, Clone)]
-#[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
pub struct FormatSpec {
- #[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
pub fill: char,
- #[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
pub align: Alignment,
- #[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
pub flags: u32,
- #[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
pub precision: Count,
- #[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
pub width: Count,
}
/// Possible alignments that can be requested as part of a formatting directive.
#[derive(Copy, Clone, PartialEq)]
-#[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
pub enum Alignment {
/// Indication that contents should be left-aligned.
- #[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
Left,
/// Indication that contents should be right-aligned.
- #[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
Right,
/// Indication that contents should be center-aligned.
- #[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
Center,
/// No alignment was requested.
- #[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
Unknown,
}
#[derive(Copy, Clone)]
-#[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
pub enum Count {
- #[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
Is(usize),
- #[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
Param(usize),
- #[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
NextParam,
- #[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
Implied,
}
#[derive(Copy, Clone)]
-#[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
pub enum Position {
- #[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
Next,
- #[cfg_attr(stage0, stable(feature = "rust1", since = "1.0.0"))]
At(usize)
}
pub fn atomic_fence_rel();
pub fn atomic_fence_acqrel();
+ /// A compiler-only memory barrier.
+ ///
+ /// Memory accesses will never be reordered across this barrier by the compiler,
+ /// but no instructions will be emitted for it. This is appropriate for operations
+ /// on the same thread that may be preempted, such as when interacting with signal
+ /// handlers.
+ #[cfg(not(stage0))] // SNAP 857ef6e
+ pub fn atomic_singlethreadfence();
+ #[cfg(not(stage0))] // SNAP 857ef6e
+ pub fn atomic_singlethreadfence_acq();
+ #[cfg(not(stage0))] // SNAP 857ef6e
+ pub fn atomic_singlethreadfence_rel();
+ #[cfg(not(stage0))] // SNAP 857ef6e
+ pub fn atomic_singlethreadfence_acqrel();
+
/// Aborts the execution of the process.
pub fn abort() -> !;
/// Returns `true` if a type is managed (will be allocated on the local heap)
pub fn owns_managed<T>() -> bool;
- /// Calculates the offset from a pointer. The offset *must* be in-bounds of
- /// the object, or one-byte-past-the-end. An arithmetic overflow is also
- /// undefined behaviour.
+ /// Calculates the offset from a pointer.
///
/// This is implemented as an intrinsic to avoid converting to and from an
/// integer, since the conversion would throw away aliasing information.
+ ///
+ /// # Safety
+ ///
+ /// Both the starting and resulting pointer must be either in bounds or one
+ /// byte past the end of an allocated object. If either pointer is out of
+ /// bounds or arithmetic overflow occurs then any further use of the
+ /// returned value will result in undefined behavior.
pub fn offset<T>(dst: *const T, offset: isize) -> *const T;
/// Copies `count * size_of<T>` bytes from `src` to `dst`. The source
/// }
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
- #[cfg(not(stage0))]
pub fn copy_nonoverlapping<T>(src: *const T, dst: *mut T, count: usize);
- /// dox
- #[stable(feature = "rust1", since = "1.0.0")]
- #[cfg(stage0)]
- pub fn copy_nonoverlapping<T>(dst: *mut T, src: *const T, count: usize);
-
/// Copies `count * size_of<T>` bytes from `src` to `dst`. The source
/// and destination may overlap.
///
/// ```
///
#[stable(feature = "rust1", since = "1.0.0")]
- #[cfg(not(stage0))]
pub fn copy<T>(src: *const T, dst: *mut T, count: usize);
- /// dox
- #[stable(feature = "rust1", since = "1.0.0")]
- #[cfg(stage0)]
- pub fn copy<T>(dst: *mut T, src: *const T, count: usize);
-
/// Invokes memset on the specified pointer, setting `count * size_of::<T>()`
/// bytes of memory starting at `dst` to `c`.
#[stable(feature = "rust1", since = "1.0.0")]
/// Returns the value of the discriminant for the variant in 'v',
/// cast to a `u64`; if `T` has no discriminant, returns 0.
- // SNAP 5520801
- #[cfg(not(stage0))]
pub fn discriminant_value<T>(v: &T) -> u64;
}
+
+#[cfg(not(stage0))]
+extern "rust-intrinsic" {
+ /// Performs an unchecked signed division, which results in undefined behavior,
+ /// in cases where y == 0, or x == int::MIN and y == -1
+ pub fn unchecked_sdiv<T>(x: T, y: T) -> T;
+ /// Performs an unchecked unsigned division, which results in undefined behavior,
+ /// in cases where y == 0
+ pub fn unchecked_udiv<T>(x: T, y: T) -> T;
+
+ /// Returns the remainder of an unchecked signed division, which results in
+ /// undefined behavior, in cases where y == 0, or x == int::MIN and y == -1
+ pub fn unchecked_urem<T>(x: T, y: T) -> T;
+ /// Returns the remainder of an unchecked signed division, which results in
+ /// undefined behavior, in cases where y == 0
+ pub fn unchecked_srem<T>(x: T, y: T) -> T;
+}
/// `start` should always be less than `end`, so the result should never
/// be negative.
///
+ /// `by` must be > 0.
+ ///
/// Returns `None` if it is not possible to calculate steps_between
/// without overflow.
fn steps_between(start: &Self, end: &Self, by: &Self) -> Option<usize>;
}
-macro_rules! step_impl {
+macro_rules! step_impl_unsigned {
($($t:ty)*) => ($(
impl Step for $t {
#[inline]
#[allow(trivial_numeric_casts)]
fn steps_between(start: &$t, end: &$t, by: &$t) -> Option<usize> {
if *start <= *end {
- Some(((*end - *start) / *by) as usize)
+ // Note: We assume $t <= usize here
+ Some((*end - *start) as usize / (*by as usize))
+ } else {
+ Some(0)
+ }
+ }
+ }
+ )*)
+}
+macro_rules! step_impl_signed {
+ ($($t:ty)*) => ($(
+ impl Step for $t {
+ #[inline]
+ fn step(&self, by: &$t) -> Option<$t> {
+ (*self).checked_add(*by)
+ }
+ #[inline]
+ #[allow(trivial_numeric_casts)]
+ fn steps_between(start: &$t, end: &$t, by: &$t) -> Option<usize> {
+ if *start <= *end {
+ // Note: We assume $t <= isize here
+ // Use .wrapping_sub and cast to usize to compute the
+ // difference that may not fit inside the range of isize.
+ Some(
+ ((*end as isize).wrapping_sub(*start as isize) as usize
+ / (*by as usize))
+ )
} else {
Some(0)
}
)*)
}
-step_impl!(usize u8 u16 u32 isize i8 i16 i32);
+step_impl_unsigned!(usize u8 u16 u32);
+step_impl_signed!(isize i8 i16 i32);
+#[cfg(target_pointer_width = "64")]
+step_impl_unsigned!(u64);
#[cfg(target_pointer_width = "64")]
-step_impl!(u64 i64);
+step_impl_signed!(i64);
#[cfg(target_pointer_width = "32")]
step_impl_no_between!(u64 i64);
#![feature(intrinsics, lang_items)]
#![feature(on_unimplemented)]
-#![feature(simd, unsafe_destructor)]
+#![feature(simd)]
#![feature(staged_api)]
#![feature(unboxed_closures)]
#![feature(rustc_attrs)]
#[stable(feature = "rust1", since = "1.0.0")]
#[lang="send"]
#[rustc_on_unimplemented = "`{Self}` cannot be sent between threads safely"]
-#[cfg(not(stage0))]
pub unsafe trait Send {
// empty.
}
-/// Types able to be transferred across thread boundaries.
-#[stable(feature = "rust1", since = "1.0.0")]
-#[lang="send"]
-#[rustc_on_unimplemented = "`{Self}` cannot be sent between threads safely"]
-#[cfg(stage0)]
-pub unsafe trait Send : MarkerTrait {
- // empty.
-}
-
unsafe impl Send for .. { }
impl<T> !Send for *const T { }
#[lang="sized"]
#[rustc_on_unimplemented = "`{Self}` does not have a constant size known at compile-time"]
#[fundamental] // for Default, for example, which requires that `[T]: !Default` be evaluatable
-#[cfg(not(stage0))]
pub trait Sized {
// Empty.
}
-/// Types with a constant size known at compile-time.
-#[stable(feature = "rust1", since = "1.0.0")]
-#[lang="sized"]
-#[rustc_on_unimplemented = "`{Self}` does not have a constant size known at compile-time"]
-#[fundamental] // for Default, for example, which requires that `[T]: !Default` be evaluatable
-#[cfg(stage0)]
-pub trait Sized : MarkerTrait {
- // Empty.
-}
-
/// Types that can be copied by simply copying bits (i.e. `memcpy`).
///
/// By default, variable bindings have 'move semantics.' In other
/// wrapper around the value(s) which can be mutated when behind a `&`
/// reference; not doing this is undefined behaviour (for example,
/// `transmute`-ing from `&T` to `&mut T` is illegal).
-#[cfg(not(stage0))]
#[stable(feature = "rust1", since = "1.0.0")]
#[lang="sync"]
#[rustc_on_unimplemented = "`{Self}` cannot be shared between threads safely"]
// Empty
}
-/// dox
-#[cfg(stage0)]
-#[stable(feature = "rust1", since = "1.0.0")]
-#[lang="sync"]
-#[rustc_on_unimplemented = "`{Self}` cannot be shared between threads safely"]
-pub unsafe trait Sync : MarkerTrait {
- // Empty
-}
-
unsafe impl Sync for .. { }
impl<T> !Sync for *const T { }
)
}
-/// dox
-#[stable(feature = "rust1", since = "1.0.0")]
-#[cfg(stage0)]
-pub trait MarkerTrait : PhantomFn<Self,Self> { }
-
-#[cfg(stage0)]
-impl<T: ?Sized> MarkerTrait for T {}
-
-/// dox
-#[lang="phantom_fn"]
-#[cfg(stage0)]
-pub trait PhantomFn<A:?Sized,R:?Sized=()> {
-}
-
/// `PhantomData<T>` allows you to describe that a type acts as if it stores a value of type `T`,
/// even though it does not. This allows you to inform the compiler about certain safety properties
/// of your code.
#[rustc_reflect_like]
#[unstable(feature = "core", reason = "requires RFC and more experience")]
#[allow(deprecated)]
-#[cfg(not(stage0))]
pub trait Reflect {}
-/// dox
-#[rustc_reflect_like]
-#[unstable(feature = "core", reason = "requires RFC and more experience")]
-#[cfg(stage0)]
-pub trait Reflect: MarkerTrait {}
-
impl Reflect for .. { }
-
use marker::Sized;
use ops::Deref;
-#[cfg(stage0)] use marker::MarkerTrait;
/// Unsafe trait to indicate what types are usable with the NonZero struct
-#[cfg(not(stage0))]
pub unsafe trait Zeroable {}
-/// Unsafe trait to indicate what types are usable with the NonZero struct
-#[cfg(stage0)]
-pub unsafe trait Zeroable: MarkerTrait {}
-
unsafe impl<T:?Sized> Zeroable for *const T {}
unsafe impl<T:?Sized> Zeroable for *mut T {}
unsafe impl Zeroable for isize {}
#[stable(feature = "rust1", since = "1.0.0")]
#[inline]
pub fn trailing_zeros(self) -> u32 {
- unsafe { $cttz(self as $ActualT) as u32 }
+ // As of LLVM 3.6 the codegen for the zero-safe cttz8 intrinsic
+ // emits two conditional moves on x86_64. By promoting the value to
+ // u16 and setting bit 8, we get better code without any conditional
+ // operations.
+ // FIXME: There's a LLVM patch (http://reviews.llvm.org/D9284)
+ // pending, remove this workaround once LLVM generates better code
+ // for cttz8.
+ unsafe {
+ if $BITS == 8 {
+ intrinsics::cttz16(self as u16 | 0x100) as u32
+ } else {
+ $cttz(self as $ActualT) as u32
+ }
+ }
}
/// Shifts the bits to the left by a specified amount, `n`,
macro_rules! neg_impl_unsigned {
($($t:ty)*) => {
neg_impl_core!{ x => {
- #[cfg(stage0)]
- use ::num::wrapping::WrappingOps;
!x.wrapping_add(1)
}, $($t)*} }
}
extern "rust-call" fn call_once(self, args: Args) -> Self::Output;
}
-#[cfg(not(stage0))]
mod impls {
use marker::Sized;
use super::{Fn, FnMut, FnOnce};
// FIXME #19649: intrinsic docs don't render, so these have no docs :(
#[stable(feature = "rust1", since = "1.0.0")]
-#[cfg(not(stage0))]
pub use intrinsics::copy_nonoverlapping;
-/// dox
-#[cfg(stage0)]
#[stable(feature = "rust1", since = "1.0.0")]
-pub unsafe fn copy_nonoverlapping<T>(src: *const T, dst: *mut T, count: usize) {
- intrinsics::copy_nonoverlapping(dst, src, count)
-}
-
-#[stable(feature = "rust1", since = "1.0.0")]
-#[cfg(not(stage0))]
pub use intrinsics::copy;
-/// dox
-#[cfg(stage0)]
-#[stable(feature = "rust1", since = "1.0.0")]
-pub unsafe fn copy<T>(src: *const T, dst: *mut T, count: usize) {
- intrinsics::copy(dst, src, count)
-}
-
-
#[stable(feature = "rust1", since = "1.0.0")]
pub use intrinsics::write_bytes;
///
/// # Safety
///
- /// The offset must be in-bounds of the object, or one-byte-past-the-end.
- /// Otherwise `offset` invokes Undefined Behaviour, regardless of whether
- /// the pointer is used.
+ /// Both the starting and resulting pointer must be either in bounds or one
+ /// byte past the end of an allocated object. If either pointer is out of
+ /// bounds or arithmetic overflow occurs then
+ /// any further use of the returned value will result in undefined behavior.
#[stable(feature = "rust1", since = "1.0.0")]
#[inline]
pub unsafe fn offset(self, count: isize) -> *const T where T: Sized {
use core::iter::*;
use core::iter::order::*;
use core::iter::MinMaxResult::*;
+use core::isize;
use core::usize;
use core::cmp;
assert_eq!((usize::MAX - 1..usize::MAX).size_hint(), (1, Some(1)));
assert_eq!((-10..-1).size_hint(), (9, Some(9)));
assert_eq!((-1..-10).size_hint(), (0, Some(0)));
+
+ assert_eq!((-70..58i8).size_hint(), (128, Some(128)));
+ assert_eq!((-128..127i8).size_hint(), (255, Some(255)));
+ assert_eq!((-2..isize::MAX).size_hint(),
+ (isize::MAX as usize + 2, Some(isize::MAX as usize + 2)));
}
#[test]
#![feature(box_syntax)]
#![feature(unboxed_closures)]
-#![feature(unsafe_destructor)]
#![feature(core)]
#![feature(test)]
#![feature(rand)]
i: Rc<RefCell<isize>>,
}
- #[unsafe_destructor]
- impl Drop for R {
+ impl Drop for R {
fn drop(&mut self) {
let ii = &*self.i;
let i = *ii.borrow();
// On NaCl, these libraries are static. Thus it would be a Bad Idea to link them
// in when creating a test crate.
-#[cfg(not(any(windows, all(target_os = "nacl", test))))]
+#[cfg(not(any(windows, target_env = "musl", all(target_os = "nacl", test))))]
#[link(name = "c")]
#[link(name = "m")]
extern {}
+#[cfg(all(target_env = "musl", not(test)))]
+#[link(name = "c", kind = "static")]
+extern {}
+
// libnacl provides functions that require a trip through the IRT to work.
// ie: _exit, mmap, nanosleep, etc. Anything that would otherwise require a trip
// to the kernel.
```
"##,
+E0013: r##"
+Static and const variables can refer to other const variables. But a const
+variable cannot refer to a static variable. For example, `Y` cannot refer to `X`
+here:
+
+```
+static X: i32 = 42;
+const Y: i32 = X;
+```
+
+To fix this, the value can be extracted as a const and then used:
+
+```
+const A: i32 = 42;
+static X: i32 = A;
+const Y: i32 = A;
+```
+"##,
+
E0015: r##"
The only function calls allowed in static or constant expressions are enum
variant constructors or struct constructors (for unit or tuple structs). This
E0010,
E0011,
E0012,
- E0013,
E0014,
E0016,
E0017,
#![feature(quote)]
#![feature(rustc_diagnostic_macros)]
#![feature(rustc_private)]
-#![feature(unsafe_destructor)]
#![feature(staged_api)]
#![feature(std_misc)]
#![feature(path_ext)]
#![feature(str_char)]
#![feature(into_cow)]
+#![feature(fs_canonicalize)]
#![feature(slice_patterns)]
#![cfg_attr(test, feature(test))]
pub mod lint;
pub mod util {
- pub use rustc_back::fs;
pub use rustc_back::sha2;
pub mod common;
use metadata::loader;
use metadata::loader::CratePaths;
-use std::path::{Path, PathBuf};
+use std::path::PathBuf;
use std::rc::Rc;
+use std::fs;
+
use syntax::ast;
use syntax::abi;
use syntax::attr;
use syntax::parse::token::InternedString;
use syntax::parse::token;
use syntax::visit;
-use util::fs;
use log;
pub struct CrateReader<'a> {
let source = self.sess.cstore.get_used_crate_source(cnum).unwrap();
if let Some(locs) = self.sess.opts.externs.get(name) {
let found = locs.iter().any(|l| {
- let l = fs::realpath(&Path::new(&l[..])).ok();
+ let l = fs::canonicalize(l).ok();
source.dylib.as_ref().map(|p| &p.0) == l.as_ref() ||
source.rlib.as_ref().map(|p| &p.0) == l.as_ref()
});
.into_inner()
.map_in_place(|mbc|
codemap::MultiByteChar {
- pos: mbc.pos + start_pos,
+ pos: mbc.pos - start_pos,
bytes: mbc.bytes
});
use std::io::prelude::*;
use std::path::{Path, PathBuf};
-use util::fs as myfs;
use session::search_paths::{SearchPaths, PathKind};
#[derive(Copy, Clone)]
// Follow symlinks. If the resolved path is relative, make it absolute.
fn canonicalize(path: Option<PathBuf>) -> Option<PathBuf> {
path.and_then(|path| {
- match myfs::realpath(&path) {
+ match fs::canonicalize(&path) {
Ok(canon) => Some(canon),
Err(e) => panic!("failed to get realpath: {}", e),
}
use metadata::filesearch::{FileSearch, FileMatches, FileDoesntMatch};
use syntax::codemap::Span;
use syntax::diagnostic::SpanHandler;
-use util::fs;
use util::common;
use rustc_back::target::Target;
use std::cmp;
use std::collections::HashMap;
+use std::fs;
use std::io::prelude::*;
use std::io;
use std::path::{Path, PathBuf};
.or_insert_with(|| (HashMap::new(), HashMap::new()));
let (ref mut rlibs, ref mut dylibs) = *slot;
if rlib {
- rlibs.insert(fs::realpath(path).unwrap(), kind);
+ rlibs.insert(fs::canonicalize(path).unwrap(), kind);
} else {
- dylibs.insert(fs::realpath(path).unwrap(), kind);
+ dylibs.insert(fs::canonicalize(path).unwrap(), kind);
}
FileMatches
// there's at most one rlib and at most one dylib.
for loc in locs {
if loc.file_name().unwrap().to_str().unwrap().ends_with(".rlib") {
- rlibs.insert(fs::realpath(&loc).unwrap(),
+ rlibs.insert(fs::canonicalize(&loc).unwrap(),
PathKind::ExternFlag);
} else {
- dylibs.insert(fs::realpath(&loc).unwrap(),
+ dylibs.insert(fs::canonicalize(&loc).unwrap(),
PathKind::ExternFlag);
}
}
let arch = &sess.target.target.arch;
let wordsz = &sess.target.target.target_pointer_width;
let os = &sess.target.target.target_os;
+ let env = &sess.target.target.target_env;
let fam = match sess.target.target.options.is_like_windows {
true => InternedString::new("windows"),
mk(InternedString::new("target_family"), fam),
mk(InternedString::new("target_arch"), intern(arch)),
mk(InternedString::new("target_endian"), intern(end)),
- mk(InternedString::new("target_pointer_width"),
- intern(wordsz))
+ mk(InternedString::new("target_pointer_width"), intern(wordsz)),
+ mk(InternedString::new("target_env"), intern(env)),
];
if sess.opts.debug_assertions {
ret.push(attr::mk_word_item(InternedString::new("debug_assertions")));
+++ /dev/null
-// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-use std::io;
-use std::path::{Path, PathBuf};
-
-#[cfg(windows)]
-pub fn realpath(original: &Path) -> io::Result<PathBuf> {
- Ok(original.to_path_buf())
-}
-
-#[cfg(unix)]
-pub fn realpath(original: &Path) -> io::Result<PathBuf> {
- use libc;
- use std::ffi::{OsString, CString};
- use std::os::unix::prelude::*;
-
- extern {
- fn realpath(pathname: *const libc::c_char, resolved: *mut libc::c_char)
- -> *mut libc::c_char;
- }
-
- let path = try!(CString::new(original.as_os_str().as_bytes()));
- let mut buf = vec![0u8; 16 * 1024];
- unsafe {
- let r = realpath(path.as_ptr(), buf.as_mut_ptr() as *mut _);
- if r.is_null() {
- return Err(io::Error::last_os_error())
- }
- }
- let p = buf.iter().position(|i| *i == 0).unwrap();
- buf.truncate(p);
- Ok(PathBuf::from(OsString::from_vec(buf)))
-}
-
-#[cfg(all(not(windows), test))]
-mod tests {
- use tempdir::TempDir;
- use std::fs::{self, File};
- use super::realpath;
-
- #[test]
- fn realpath_works() {
- let tmpdir = TempDir::new("rustc-fs").unwrap();
- let tmpdir = realpath(tmpdir.path()).unwrap();
- let file = tmpdir.join("test");
- let dir = tmpdir.join("test2");
- let link = dir.join("link");
- let linkdir = tmpdir.join("test3");
-
- File::create(&file).unwrap();
- fs::create_dir(&dir).unwrap();
- fs::soft_link(&file, &link).unwrap();
- fs::soft_link(&dir, &linkdir).unwrap();
-
- assert_eq!(realpath(&tmpdir).unwrap(), tmpdir);
- assert_eq!(realpath(&file).unwrap(), file);
- assert_eq!(realpath(&link).unwrap(), file);
- assert_eq!(realpath(&linkdir).unwrap(), dir);
- assert_eq!(realpath(&linkdir.join("link")).unwrap(), file);
- }
-
- #[test]
- fn realpath_works_tricky() {
- let tmpdir = TempDir::new("rustc-fs").unwrap();
- let tmpdir = realpath(tmpdir.path()).unwrap();
-
- let a = tmpdir.join("a");
- let b = a.join("b");
- let c = b.join("c");
- let d = a.join("d");
- let e = d.join("e");
- let f = a.join("f");
-
- fs::create_dir_all(&b).unwrap();
- fs::create_dir_all(&d).unwrap();
- File::create(&f).unwrap();
- fs::soft_link("../d/e", &c).unwrap();
- fs::soft_link("../f", &e).unwrap();
-
- assert_eq!(realpath(&c).unwrap(), f);
- assert_eq!(realpath(&e).unwrap(), f);
- }
-}
#![feature(path_ext)]
#![feature(step_by)]
#![feature(libc)]
+#![feature(fs_canonicalize)]
#![cfg_attr(test, feature(test, rand))]
extern crate syntax;
pub mod archive;
pub mod tempdir;
pub mod arm;
-pub mod fs;
pub mod mips;
pub mod mipsel;
pub mod rpath;
use std::collections::HashSet;
use std::env;
-use std::io;
use std::path::{Path, PathBuf};
+use std::fs;
use syntax::ast;
pub struct RPathConfig<'a> {
pub is_like_osx: bool,
pub has_rpath: bool,
pub get_install_prefix_lib_path: &'a mut FnMut() -> PathBuf,
- pub realpath: &'a mut FnMut(&Path) -> io::Result<PathBuf>,
}
pub fn get_rpath_flags(config: &mut RPathConfig) -> Vec<String> {
};
let cwd = env::current_dir().unwrap();
- let mut lib = (config.realpath)(&cwd.join(lib)).unwrap();
+ let mut lib = fs::canonicalize(&cwd.join(lib)).unwrap_or(cwd.join(lib));
lib.pop();
let mut output = cwd.join(&config.out_filename);
output.pop();
- let output = (config.realpath)(&output).unwrap();
+ let output = fs::canonicalize(&output).unwrap_or(output);
let relative = path_relative_from(&lib, &output)
.expect(&format!("couldn't create relative path from {:?} to {:?}", output, lib));
// FIXME (#9639): This needs to handle non-utf8 paths
is_like_osx: true,
out_filename: PathBuf::from("bin/rustc"),
get_install_prefix_lib_path: &mut || panic!(),
- realpath: &mut |p| Ok(p.to_path_buf()),
};
let res = get_rpath_relative_to_output(config,
Path::new("lib/libstd.so"));
get_install_prefix_lib_path: &mut || panic!(),
has_rpath: true,
is_like_osx: false,
- realpath: &mut |p| Ok(p.to_path_buf()),
};
let res = get_rpath_relative_to_output(config,
Path::new("lib/libstd.so"));
target_pointer_width: "64".to_string(),
arch: "aarch64".to_string(),
target_os: "ios".to_string(),
+ target_env: "".to_string(),
options: TargetOptions {
features: "+neon,+fp-armv8,+cyclone".to_string(),
eliminate_frame_pointer: false,
target_pointer_width: "64".to_string(),
arch: "aarch64".to_string(),
target_os: "android".to_string(),
+ target_env: "".to_string(),
options: base,
}
}
llvm_target: "aarch64-unknown-linux-gnu".to_string(),
target_endian: "little".to_string(),
target_pointer_width: "64".to_string(),
+ target_env: "gnu".to_string(),
arch: "aarch64".to_string(),
target_os: "linux".to_string(),
options: base,
target_pointer_width: "32".to_string(),
arch: "arm".to_string(),
target_os: "android".to_string(),
+ target_env: "gnu".to_string(),
options: base,
}
}
target_pointer_width: "32".to_string(),
arch: "arm".to_string(),
target_os: "linux".to_string(),
+ target_env: "gnueabi".to_string(),
options: TargetOptions {
features: "+v6".to_string(),
target_pointer_width: "32".to_string(),
arch: "arm".to_string(),
target_os: "linux".to_string(),
+ target_env: "gnueabihf".to_string(),
options: TargetOptions {
features: "+v6,+vfp2".to_string(),
target_pointer_width: "32".to_string(),
arch: "arm".to_string(),
target_os: "ios".to_string(),
+ target_env: "".to_string(),
options: TargetOptions {
features: "+v7,+vfp3,+neon".to_string(),
.. opts(Arch::Armv7)
target_pointer_width: "32".to_string(),
arch: "arm".to_string(),
target_os: "ios".to_string(),
+ target_env: "".to_string(),
options: TargetOptions {
features: "+v7,+vfp4,+neon".to_string(),
.. opts(Arch::Armv7s)
target_pointer_width: "32".to_string(),
arch: "x86".to_string(),
target_os: "ios".to_string(),
+ target_env: "".to_string(),
options: opts(Arch::I386)
}
}
target_pointer_width: "32".to_string(),
arch: "x86".to_string(),
target_os: "macos".to_string(),
+ target_env: "".to_string(),
options: base,
}
}
target_pointer_width: "32".to_string(),
arch: "x86".to_string(),
target_os: "windows".to_string(),
+ target_env: "gnu".to_string(),
options: options,
}
}
target_pointer_width: "32".to_string(),
arch: "x86".to_string(),
target_os: "dragonfly".to_string(),
+ target_env: "".to_string(),
options: base,
}
}
target_pointer_width: "32".to_string(),
arch: "x86".to_string(),
target_os: "linux".to_string(),
+ target_env: "gnu".to_string(),
options: base,
}
}
morestack: true,
linker_is_gnu: true,
has_rpath: true,
- pre_link_args: vec!(
- // GNU-style linkers will use this to omit linking to libraries which
- // don't actually fulfill any relocations, but only for libraries which
- // follow this flag. Thus, use it before specifying libraries to link to.
+ pre_link_args: vec![
+ // We want to be able to strip as much executable code as possible
+ // from the linker command line, and this flag indicates to the
+ // linker that it can avoid linking in dynamic libraries that don't
+ // actually satisfy any symbols up to that point (as with many other
+ // resolutions the linker does). This option only applies to all
+ // following libraries so we're sure to pass it as one of the first
+ // arguments.
"-Wl,--as-needed".to_string(),
- ),
+ ],
position_independent_executables: true,
.. Default::default()
}
target_pointer_width: "32".to_string(),
arch: "mips".to_string(),
target_os: "linux".to_string(),
+ target_env: "gnu".to_string(),
options: super::linux_base::opts()
}
}
target_pointer_width: "32".to_string(),
arch: "mips".to_string(),
target_os: "linux".to_string(),
+ target_env: "gnu".to_string(),
options: super::linux_base::opts()
}
mod bitrig_base;
mod openbsd_base;
-mod armv7_apple_ios;
-mod armv7s_apple_ios;
-mod i386_apple_ios;
-
-mod arm_linux_androideabi;
-mod arm_unknown_linux_gnueabi;
-mod arm_unknown_linux_gnueabihf;
-mod aarch64_apple_ios;
-mod aarch64_linux_android;
-mod aarch64_unknown_linux_gnu;
-mod i686_apple_darwin;
-mod i686_pc_windows_gnu;
-mod i686_unknown_dragonfly;
-mod i686_unknown_linux_gnu;
-mod mips_unknown_linux_gnu;
-mod mipsel_unknown_linux_gnu;
-mod powerpc_unknown_linux_gnu;
-mod x86_64_apple_darwin;
-mod x86_64_apple_ios;
-mod x86_64_pc_windows_gnu;
-mod x86_64_unknown_freebsd;
-mod x86_64_unknown_dragonfly;
-mod x86_64_unknown_bitrig;
-mod x86_64_unknown_linux_gnu;
-mod x86_64_unknown_openbsd;
-
/// Everything `rustc` knows about how to compile for a specific target.
///
/// Every field here must be specified, and has no default value.
pub target_pointer_width: String,
/// OS name to use for conditional compilation.
pub target_os: String,
+ /// Environment name to use for conditional compilation.
+ pub target_env: String,
/// Architecture to use for ABI considerations. Valid options: "x86", "x86_64", "arm",
/// "aarch64", "mips", and "powerpc". "mips" includes "mipsel".
pub arch: String,
pub struct TargetOptions {
/// Linker to invoke. Defaults to "cc".
pub linker: String,
- /// Linker arguments that are unconditionally passed *before* any user-defined libraries.
+ /// Linker arguments that are unconditionally passed *before* any
+ /// user-defined libraries.
pub pre_link_args: Vec<String>,
- /// Linker arguments that are unconditionally passed *after* any user-defined libraries.
+ /// Linker arguments that are unconditionally passed *after* any
+ /// user-defined libraries.
pub post_link_args: Vec<String>,
- /// Default CPU to pass to LLVM. Corresponds to `llc -mcpu=$cpu`. Defaults to "default".
+ /// Objects to link before and after all others, always found within the
+ /// sysroot folder.
+ pub pre_link_objects: Vec<String>,
+ pub post_link_objects: Vec<String>,
+ /// Default CPU to pass to LLVM. Corresponds to `llc -mcpu=$cpu`. Defaults
+ /// to "default".
pub cpu: String,
- /// Default target features to pass to LLVM. These features will *always* be passed, and cannot
- /// be disabled even via `-C`. Corresponds to `llc -mattr=$features`.
+ /// Default target features to pass to LLVM. These features will *always* be
+ /// passed, and cannot be disabled even via `-C`. Corresponds to `llc
+ /// -mattr=$features`.
pub features: String,
/// Whether dynamic linking is available on this target. Defaults to false.
pub dynamic_linking: bool,
has_rpath: false,
no_compiler_rt: false,
position_independent_executables: false,
+ pre_link_objects: Vec::new(),
+ post_link_objects: Vec::new(),
}
}
}
target_pointer_width: get_req_field("target-pointer-width"),
arch: get_req_field("arch"),
target_os: get_req_field("os"),
+ target_env: obj.find("env").and_then(|s| s.as_string())
+ .map(|s| s.to_string()).unwrap_or(String::new()),
options: Default::default(),
};
macro_rules! load_specific {
( $($name:ident),+ ) => (
{
+ $(mod $name;)*
let target = target.replace("-", "_");
if false { }
$(
arm_unknown_linux_gnueabi,
arm_unknown_linux_gnueabihf,
aarch64_unknown_linux_gnu,
+ x86_64_unknown_linux_musl,
arm_linux_androideabi,
aarch64_linux_android,
target_pointer_width: "32".to_string(),
arch: "powerpc".to_string(),
target_os: "linux".to_string(),
+ target_env: "gnu".to_string(),
options: base,
}
}
target_pointer_width: "64".to_string(),
arch: "x86_64".to_string(),
target_os: "macos".to_string(),
+ target_env: "".to_string(),
options: base,
}
}
target_pointer_width: "64".to_string(),
arch: "x86_64".to_string(),
target_os: "ios".to_string(),
+ target_env: "".to_string(),
options: opts(Arch::X86_64)
}
}
target_pointer_width: "64".to_string(),
arch: "x86_64".to_string(),
target_os: "windows".to_string(),
+ target_env: "gnu".to_string(),
options: base,
}
}
target_pointer_width: "64".to_string(),
arch: "x86_64".to_string(),
target_os: "bitrig".to_string(),
+ target_env: "".to_string(),
options: base,
}
}
target_pointer_width: "64".to_string(),
arch: "x86_64".to_string(),
target_os: "dragonfly".to_string(),
+ target_env: "".to_string(),
options: base,
}
}
target_pointer_width: "64".to_string(),
arch: "x86_64".to_string(),
target_os: "freebsd".to_string(),
+ target_env: "".to_string(),
options: base,
}
}
target_pointer_width: "64".to_string(),
arch: "x86_64".to_string(),
target_os: "linux".to_string(),
+ target_env: "gnu".to_string(),
options: base,
}
}
--- /dev/null
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use target::Target;
+
+pub fn target() -> Target {
+ let mut base = super::linux_base::opts();
+ base.cpu = "x86-64".to_string();
+ base.pre_link_args.push("-m64".to_string());
+
+ // Make sure that the linker/gcc really don't pull in anything, including
+ // default objects, libs, etc.
+ base.pre_link_args.push("-nostdlib".to_string());
+ base.pre_link_args.push("-static".to_string());
+
+ // At least when this was tested, the linker would not add the
+ // `GNU_EH_FRAME` program header to executables generated, which is required
+ // when unwinding to locate the unwinding information. I'm not sure why this
+ // argument is *not* necessary for normal builds, but it can't hurt!
+ base.pre_link_args.push("-Wl,--eh-frame-hdr".to_string());
+
+ // There's a whole bunch of circular dependencies when dealing with MUSL
+ // unfortunately. To put this in perspective libc is statically linked to
+ // liblibc and libunwind is statically linked to libstd:
+ //
+ // * libcore depends on `fmod` which is in libc (transitively in liblibc).
+ // liblibc, however, depends on libcore.
+ // * compiler-rt has personality symbols that depend on libunwind, but
+ // libunwind is in libstd which depends on compiler-rt.
+ //
+ // Recall that linkers discard libraries and object files as much as
+ // possible, and with all the static linking and archives flying around with
+ // MUSL the linker is super aggressively stripping out objects. For example
+ // the first case has fmod stripped from liblibc (it's in its own object
+ // file) so it's not there when libcore needs it. In the second example all
+ // the unused symbols from libunwind are stripped (each is in its own object
+ // file in libstd) before we end up linking compiler-rt which depends on
+ // those symbols.
+ //
+ // To deal with these circular dependencies we just force the compiler to
+ // link everything as a group, not stripping anything out until everything
+ // is processed. The linker will still perform a pass to strip out object
+ // files but it won't do so until all objects/archives have been processed.
+ base.pre_link_args.push("-Wl,-(".to_string());
+ base.post_link_args.push("-Wl,-)".to_string());
+
+ // When generating a statically linked executable there's generally some
+ // small setup needed which is listed in these files. These are provided by
+ // a musl toolchain and are linked by default by the `musl-gcc` script. Note
+ // that `gcc` also does this by default, it just uses some different files.
+ //
+ // Each target directory for musl has these object files included in it so
+ // they'll be included from there.
+ base.pre_link_objects.push("crt1.o".to_string());
+ base.pre_link_objects.push("crti.o".to_string());
+ base.post_link_objects.push("crtn.o".to_string());
+
+ // MUSL support doesn't currently include dynamic linking, so there's no
+ // need for dylibs or rpath business. Additionally `-pie` is incompatible
+ // with `-static`, so we can't pass `-pie`.
+ base.dynamic_linking = false;
+ base.has_rpath = false;
+ base.position_independent_executables = false;
+
+ Target {
+ data_layout: "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-\
+ f32:32:32-f64:64:64-v64:64:64-v128:128:128-a:0:64-\
+ s0:64:64-f80:128:128-n8:16:32:64-S128".to_string(),
+ llvm_target: "x86_64-unknown-linux-musl".to_string(),
+ target_endian: "little".to_string(),
+ target_pointer_width: "64".to_string(),
+ arch: "x86_64".to_string(),
+ target_os: "linux".to_string(),
+ target_env: "musl".to_string(),
+ options: base,
+ }
+}
target_pointer_width: "64".to_string(),
arch: "x86_64".to_string(),
target_os: "openbsd".to_string(),
+ target_env: "".to_string(),
options: base,
}
}
#![feature(rustc_diagnostic_macros)]
#![feature(rustc_private)]
#![feature(staged_api)]
-#![feature(unsafe_destructor)]
#![feature(into_cow)]
#[macro_use] extern crate log;
#![feature(quote)]
#![feature(rustc_diagnostic_macros)]
#![feature(rustc_private)]
-#![feature(unsafe_destructor)]
#![feature(staged_api)]
#![feature(exit_status)]
#![feature(set_stdio)]
#![feature(quote)]
#![feature(rustc_diagnostic_macros)]
#![feature(rustc_private)]
-#![feature(unsafe_destructor)]
#![feature(staged_api)]
#![feature(str_char)]
#![cfg_attr(test, feature(test))]
}
}
-#[unsafe_destructor]
impl<'a> Drop for Iter<'a> {
fn drop(&mut self) {
unsafe {
#![feature(libc)]
#![feature(link_args)]
#![feature(staged_api)]
-#![feature(unsafe_destructor)]
extern crate libc;
#[macro_use] #[no_link] extern crate rustc_bitflags;
pub use self::TypeKind::*;
pub use self::AtomicBinOp::*;
pub use self::AtomicOrdering::*;
+pub use self::SynchronizationScope::*;
pub use self::FileType::*;
pub use self::MetadataType::*;
pub use self::AsmDialect::*;
SequentiallyConsistent = 7
}
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub enum SynchronizationScope {
+ SingleThread = 0,
+ CrossThread = 1
+}
+
// Consts for the LLVMCodeGenFileType type (in include/llvm/c/TargetMachine.h)
#[repr(C)]
#[derive(Copy, Clone)]
SingleThreaded: Bool)
-> ValueRef;
- pub fn LLVMBuildAtomicFence(B: BuilderRef, Order: AtomicOrdering);
+ pub fn LLVMBuildAtomicFence(B: BuilderRef,
+ Order: AtomicOrdering,
+ Scope: SynchronizationScope);
/* Selected entries from the downcasts. */
use std::fs::{self, PathExt};
use std::io::{self, Read, Write};
use std::mem;
-use std::path::{Path, PathBuf};
+use std::path::{self, Path, PathBuf};
use std::process::Command;
use std::str;
use flate;
let pname = get_cc_prog(sess);
let mut cmd = Command::new(&pname[..]);
+ let root = sess.target_filesearch(PathKind::Native).get_lib_path();
cmd.args(&sess.target.target.options.pre_link_args);
+ for obj in &sess.target.target.options.pre_link_objects {
+ cmd.arg(root.join(obj));
+ }
+
link_args(&mut cmd, sess, dylib, tmpdir.path(),
trans, obj_filename, out_filename);
- cmd.args(&sess.target.target.options.post_link_args);
if !sess.target.target.options.no_compiler_rt {
cmd.arg("-lcompiler-rt");
}
+ for obj in &sess.target.target.options.post_link_objects {
+ cmd.arg(root.join(obj));
+ }
+ cmd.args(&sess.target.target.options.post_link_args);
if sess.opts.debugging_opts.print_link_args {
println!("{:?}", &cmd);
// target descriptor
let t = &sess.target.target;
- cmd.arg("-L").arg(&lib_path);
+ cmd.arg("-L").arg(&fix_windows_verbatim_for_gcc(&lib_path));
cmd.arg("-o").arg(out_filename).arg(obj_filename);
// stripped away as much as it could. This has not been seen to impact
// link times negatively.
//
- // -dead_strip can't be part of the pre_link_args because it's also used for partial
- // linking when using multiple codegen units (-r). So we insert it here.
+ // -dead_strip can't be part of the pre_link_args because it's also used
+ // for partial linking when using multiple codegen units (-r). So we
+ // insert it here.
cmd.arg("-Wl,-dead_strip");
}
has_rpath: sess.target.target.options.has_rpath,
is_like_osx: sess.target.target.options.is_like_osx,
get_install_prefix_lib_path: &mut get_install_prefix_lib_path,
- realpath: &mut ::util::fs::realpath
};
cmd.args(&rpath::get_rpath_flags(&mut rpath_config));
}
}
});
} else {
- cmd.arg(cratepath);
+ cmd.arg(&fix_windows_verbatim_for_gcc(cratepath));
}
}
// Just need to tell the linker about where the library lives and
// what its name is
if let Some(dir) = cratepath.parent() {
- cmd.arg("-L").arg(dir);
+ cmd.arg("-L").arg(&fix_windows_verbatim_for_gcc(dir));
}
let filestem = cratepath.file_stem().unwrap().to_str().unwrap();
cmd.arg(&format!("-l{}", unlib(&sess.target, filestem)));
}
}
}
+
+// Unfortunately, on windows, gcc cannot accept paths of the form `\\?\C:\...`
+// (a verbatim path). This form of path is generally pretty rare, but the
+// implementation of `fs::canonicalize` currently generates paths of this form,
+// meaning that we're going to be passing quite a few of these down to gcc.
+//
+// For now we just strip the "verbatim prefix" of `\\?\` from the path. This
+// will probably lose information in some cases, but there's not a whole lot
+// more we can do with a buggy gcc...
+fn fix_windows_verbatim_for_gcc(p: &Path) -> PathBuf {
+ if !cfg!(windows) {
+ return p.to_path_buf()
+ }
+ let mut components = p.components();
+ let prefix = match components.next() {
+ Some(path::Component::Prefix(p)) => p,
+ _ => return p.to_path_buf(),
+ };
+ let disk = match prefix.kind() {
+ path::Prefix::VerbatimDisk(disk) => disk,
+ _ => return p.to_path_buf(),
+ };
+ let mut base = OsString::from(format!("{}:", disk as char));
+ base.push(components.as_path());
+ PathBuf::from(base)
+}
#![feature(quote)]
#![feature(rustc_diagnostic_macros)]
#![feature(rustc_private)]
-#![feature(unsafe_destructor)]
#![feature(staged_api)]
#![feature(unicode)]
#![feature(path_ext)]
_cannot_construct_outside_of_this_module: ()
}
-#[unsafe_destructor]
impl Drop for _InsnCtxt {
fn drop(&mut self) {
TASK_LOCAL_INSN_KEY.with(|slot| {
}
}
-#[unsafe_destructor]
impl<'a, 'tcx> Drop for StatRecorder<'a, 'tcx> {
fn drop(&mut self) {
if self.ccx.sess().trans_stats() {
unsafe {
llvm::LLVMPositionBuilderAtEnd(bld, llbb);
- debuginfo::insert_reference_to_gdb_debug_scripts_section_global(ccx);
+ debuginfo::gdb::insert_reference_to_gdb_debug_scripts_section_global(ccx);
let (start_fn, args) = if use_start_lang_item {
let start_def_id = match ccx.tcx().lang_items.require(StartFnLangItem) {
#![allow(non_snake_case)]
use llvm;
-use llvm::{CallConv, AtomicBinOp, AtomicOrdering, AsmDialect, AttrBuilder};
+use llvm::{CallConv, AtomicBinOp, AtomicOrdering, SynchronizationScope, AsmDialect, AttrBuilder};
use llvm::{Opcode, IntPredicate, RealPredicate};
use llvm::{ValueRef, BasicBlockRef};
use trans::common::*;
B(cx).call_with_conv(fn_, args, conv, attributes)
}
-pub fn AtomicFence(cx: Block, order: AtomicOrdering) {
+pub fn AtomicFence(cx: Block, order: AtomicOrdering, scope: SynchronizationScope) {
if cx.unreachable.get() { return; }
- B(cx).atomic_fence(order)
+ B(cx).atomic_fence(order, scope)
}
pub fn Select(cx: Block, if_: ValueRef, then: ValueRef, else_: ValueRef) -> ValueRef {
#![allow(dead_code)] // FFI wrappers
use llvm;
-use llvm::{CallConv, AtomicBinOp, AtomicOrdering, AsmDialect, AttrBuilder};
+use llvm::{CallConv, AtomicBinOp, AtomicOrdering, SynchronizationScope, AsmDialect, AttrBuilder};
use llvm::{Opcode, IntPredicate, RealPredicate, False};
use llvm::{ValueRef, BasicBlockRef, BuilderRef, ModuleRef};
use trans::base;
}
}
- pub fn atomic_fence(&self, order: AtomicOrdering) {
+ pub fn atomic_fence(&self, order: AtomicOrdering, scope: SynchronizationScope) {
unsafe {
- llvm::LLVMBuildAtomicFence(self.llbuilder, order);
+ llvm::LLVMBuildAtomicFence(self.llbuilder, order, scope);
}
}
}
}
}
+/// Declare any llvm intrinsics that you might need
fn declare_intrinsic(ccx: &CrateContext, key: & &'static str) -> Option<ValueRef> {
macro_rules! ifn {
($name:expr, fn() -> $ret:expr) => (
+++ /dev/null
-// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! # Debug Info Module
-//!
-//! This module serves the purpose of generating debug symbols. We use LLVM's
-//! [source level debugging](http://llvm.org/docs/SourceLevelDebugging.html)
-//! features for generating the debug information. The general principle is this:
-//!
-//! Given the right metadata in the LLVM IR, the LLVM code generator is able to
-//! create DWARF debug symbols for the given code. The
-//! [metadata](http://llvm.org/docs/LangRef.html#metadata-type) is structured much
-//! like DWARF *debugging information entries* (DIE), representing type information
-//! such as datatype layout, function signatures, block layout, variable location
-//! and scope information, etc. It is the purpose of this module to generate correct
-//! metadata and insert it into the LLVM IR.
-//!
-//! As the exact format of metadata trees may change between different LLVM
-//! versions, we now use LLVM
-//! [DIBuilder](http://llvm.org/docs/doxygen/html/classllvm_1_1DIBuilder.html) to
-//! create metadata where possible. This will hopefully ease the adaption of this
-//! module to future LLVM versions.
-//!
-//! The public API of the module is a set of functions that will insert the correct
-//! metadata into the LLVM IR when called with the right parameters. The module is
-//! thus driven from an outside client with functions like
-//! `debuginfo::create_local_var_metadata(bcx: block, local: &ast::local)`.
-//!
-//! Internally the module will try to reuse already created metadata by utilizing a
-//! cache. The way to get a shared metadata node when needed is thus to just call
-//! the corresponding function in this module:
-//!
-//! let file_metadata = file_metadata(crate_context, path);
-//!
-//! The function will take care of probing the cache for an existing node for that
-//! exact file path.
-//!
-//! All private state used by the module is stored within either the
-//! CrateDebugContext struct (owned by the CrateContext) or the FunctionDebugContext
-//! (owned by the FunctionContext).
-//!
-//! This file consists of three conceptual sections:
-//! 1. The public interface of the module
-//! 2. Module-internal metadata creation functions
-//! 3. Minor utility functions
-//!
-//!
-//! ## Recursive Types
-//!
-//! Some kinds of types, such as structs and enums can be recursive. That means that
-//! the type definition of some type X refers to some other type which in turn
-//! (transitively) refers to X. This introduces cycles into the type referral graph.
-//! A naive algorithm doing an on-demand, depth-first traversal of this graph when
-//! describing types, can get trapped in an endless loop when it reaches such a
-//! cycle.
-//!
-//! For example, the following simple type for a singly-linked list...
-//!
-//! ```
-//! struct List {
-//! value: int,
-//! tail: Option<Box<List>>,
-//! }
-//! ```
-//!
-//! will generate the following callstack with a naive DFS algorithm:
-//!
-//! ```
-//! describe(t = List)
-//! describe(t = int)
-//! describe(t = Option<Box<List>>)
-//! describe(t = Box<List>)
-//! describe(t = List) // at the beginning again...
-//! ...
-//! ```
-//!
-//! To break cycles like these, we use "forward declarations". That is, when the
-//! algorithm encounters a possibly recursive type (any struct or enum), it
-//! immediately creates a type description node and inserts it into the cache
-//! *before* describing the members of the type. This type description is just a
-//! stub (as type members are not described and added to it yet) but it allows the
-//! algorithm to already refer to the type. After the stub is inserted into the
-//! cache, the algorithm continues as before. If it now encounters a recursive
-//! reference, it will hit the cache and does not try to describe the type anew.
-//!
-//! This behaviour is encapsulated in the 'RecursiveTypeDescription' enum, which
-//! represents a kind of continuation, storing all state needed to continue
-//! traversal at the type members after the type has been registered with the cache.
-//! (This implementation approach might be a tad over-engineered and may change in
-//! the future)
-//!
-//!
-//! ## Source Locations and Line Information
-//!
-//! In addition to data type descriptions the debugging information must also allow
-//! to map machine code locations back to source code locations in order to be useful.
-//! This functionality is also handled in this module. The following functions allow
-//! to control source mappings:
-//!
-//! + set_source_location()
-//! + clear_source_location()
-//! + start_emitting_source_locations()
-//!
-//! `set_source_location()` allows to set the current source location. All IR
-//! instructions created after a call to this function will be linked to the given
-//! source location, until another location is specified with
-//! `set_source_location()` or the source location is cleared with
-//! `clear_source_location()`. In the later case, subsequent IR instruction will not
-//! be linked to any source location. As you can see, this is a stateful API
-//! (mimicking the one in LLVM), so be careful with source locations set by previous
-//! calls. It's probably best to not rely on any specific state being present at a
-//! given point in code.
-//!
-//! One topic that deserves some extra attention is *function prologues*. At the
-//! beginning of a function's machine code there are typically a few instructions
-//! for loading argument values into allocas and checking if there's enough stack
-//! space for the function to execute. This *prologue* is not visible in the source
-//! code and LLVM puts a special PROLOGUE END marker into the line table at the
-//! first non-prologue instruction of the function. In order to find out where the
-//! prologue ends, LLVM looks for the first instruction in the function body that is
-//! linked to a source location. So, when generating prologue instructions we have
-//! to make sure that we don't emit source location information until the 'real'
-//! function body begins. For this reason, source location emission is disabled by
-//! default for any new function being translated and is only activated after a call
-//! to the third function from the list above, `start_emitting_source_locations()`.
-//! This function should be called right before regularly starting to translate the
-//! top-level block of the given function.
-//!
-//! There is one exception to the above rule: `llvm.dbg.declare` instruction must be
-//! linked to the source location of the variable being declared. For function
-//! parameters these `llvm.dbg.declare` instructions typically occur in the middle
-//! of the prologue, however, they are ignored by LLVM's prologue detection. The
-//! `create_argument_metadata()` and related functions take care of linking the
-//! `llvm.dbg.declare` instructions to the correct source locations even while
-//! source location emission is still disabled, so there is no need to do anything
-//! special with source location handling here.
-//!
-//! ## Unique Type Identification
-//!
-//! In order for link-time optimization to work properly, LLVM needs a unique type
-//! identifier that tells it across compilation units which types are the same as
-//! others. This type identifier is created by TypeMap::get_unique_type_id_of_type()
-//! using the following algorithm:
-//!
-//! (1) Primitive types have their name as ID
-//! (2) Structs, enums and traits have a multipart identifier
-//!
-//! (1) The first part is the SVH (strict version hash) of the crate they were
-//! originally defined in
-//!
-//! (2) The second part is the ast::NodeId of the definition in their original
-//! crate
-//!
-//! (3) The final part is a concatenation of the type IDs of their concrete type
-//! arguments if they are generic types.
-//!
-//! (3) Tuple-, pointer and function types are structurally identified, which means
-//! that they are equivalent if their component types are equivalent (i.e. (int,
-//! int) is the same regardless in which crate it is used).
-//!
-//! This algorithm also provides a stable ID for types that are defined in one crate
-//! but instantiated from metadata within another crate. We just have to take care
-//! to always map crate and node IDs back to the original crate context.
-//!
-//! As a side-effect these unique type IDs also help to solve a problem arising from
-//! lifetime parameters. Since lifetime parameters are completely omitted in
-//! debuginfo, more than one `Ty` instance may map to the same debuginfo type
-//! metadata, that is, some struct `Struct<'a>` may have N instantiations with
-//! different concrete substitutions for `'a`, and thus there will be N `Ty`
-//! instances for the type `Struct<'a>` even though it is not generic otherwise.
-//! Unfortunately this means that we cannot use `ty::type_id()` as cheap identifier
-//! for type metadata---we have done this in the past, but it led to unnecessary
-//! metadata duplication in the best case and LLVM assertions in the worst. However,
-//! the unique type ID as described above *can* be used as identifier. Since it is
-//! comparatively expensive to construct, though, `ty::type_id()` is still used
-//! additionally as an optimization for cases where the exact same type has been
-//! seen before (which is most of the time).
-use self::VariableAccess::*;
-use self::VariableKind::*;
-use self::MemberOffset::*;
-use self::MemberDescriptionFactory::*;
-use self::RecursiveTypeDescription::*;
-use self::EnumDiscriminantInfo::*;
-use self::InternalDebugLocation::*;
-
-use llvm;
-use llvm::{ModuleRef, ContextRef, ValueRef};
-use llvm::debuginfo::*;
-use metadata::csearch;
-use middle::subst::{self, Substs};
-use trans::{self, adt, machine, type_of};
-use trans::common::{self, NodeIdAndSpan, CrateContext, FunctionContext, Block, C_bytes,
- NormalizingClosureTyper};
-use trans::declare;
-use trans::_match::{BindingInfo, TrByCopy, TrByMove, TrByRef};
-use trans::monomorphize;
-use trans::type_::Type;
-use middle::ty::{self, Ty, ClosureTyper};
-use middle::pat_util;
-use session::config::{self, FullDebugInfo, LimitedDebugInfo, NoDebugInfo};
-use util::nodemap::{DefIdMap, NodeMap, FnvHashMap, FnvHashSet};
-use util::ppaux;
-use util::common::path2cstr;
-
-use libc::{c_uint, c_longlong};
-use std::cell::{Cell, RefCell};
-use std::ffi::CString;
-use std::path::Path;
-use std::ptr;
-use std::rc::{Rc, Weak};
-use syntax::util::interner::Interner;
-use syntax::codemap::{Span, Pos};
-use syntax::{ast, codemap, ast_util, ast_map, attr};
-use syntax::parse::token::{self, special_idents};
-
-const DW_LANG_RUST: c_uint = 0x9000;
-
-#[allow(non_upper_case_globals)]
-const DW_TAG_auto_variable: c_uint = 0x100;
-#[allow(non_upper_case_globals)]
-const DW_TAG_arg_variable: c_uint = 0x101;
-
-#[allow(non_upper_case_globals)]
-const DW_ATE_boolean: c_uint = 0x02;
-#[allow(non_upper_case_globals)]
-const DW_ATE_float: c_uint = 0x04;
-#[allow(non_upper_case_globals)]
-const DW_ATE_signed: c_uint = 0x05;
-#[allow(non_upper_case_globals)]
-const DW_ATE_unsigned: c_uint = 0x07;
-#[allow(non_upper_case_globals)]
-const DW_ATE_unsigned_char: c_uint = 0x08;
-
-const UNKNOWN_LINE_NUMBER: c_uint = 0;
-const UNKNOWN_COLUMN_NUMBER: c_uint = 0;
-
-// ptr::null() doesn't work :(
-const UNKNOWN_FILE_METADATA: DIFile = (0 as DIFile);
-const UNKNOWN_SCOPE_METADATA: DIScope = (0 as DIScope);
-
-const FLAGS_NONE: c_uint = 0;
-
-//=-----------------------------------------------------------------------------
-// Public Interface of debuginfo module
-//=-----------------------------------------------------------------------------
-
-#[derive(Copy, Debug, Hash, Eq, PartialEq, Clone)]
-struct UniqueTypeId(ast::Name);
-
-// The TypeMap is where the CrateDebugContext holds the type metadata nodes
-// created so far. The metadata nodes are indexed by UniqueTypeId, and, for
-// faster lookup, also by Ty. The TypeMap is responsible for creating
-// UniqueTypeIds.
-struct TypeMap<'tcx> {
- // The UniqueTypeIds created so far
- unique_id_interner: Interner<Rc<String>>,
- // A map from UniqueTypeId to debuginfo metadata for that type. This is a 1:1 mapping.
- unique_id_to_metadata: FnvHashMap<UniqueTypeId, DIType>,
- // A map from types to debuginfo metadata. This is a N:1 mapping.
- type_to_metadata: FnvHashMap<Ty<'tcx>, DIType>,
- // A map from types to UniqueTypeId. This is a N:1 mapping.
- type_to_unique_id: FnvHashMap<Ty<'tcx>, UniqueTypeId>
-}
-
-impl<'tcx> TypeMap<'tcx> {
-
- fn new() -> TypeMap<'tcx> {
- TypeMap {
- unique_id_interner: Interner::new(),
- type_to_metadata: FnvHashMap(),
- unique_id_to_metadata: FnvHashMap(),
- type_to_unique_id: FnvHashMap(),
- }
- }
-
- // Adds a Ty to metadata mapping to the TypeMap. The method will fail if
- // the mapping already exists.
- fn register_type_with_metadata<'a>(&mut self,
- cx: &CrateContext<'a, 'tcx>,
- type_: Ty<'tcx>,
- metadata: DIType) {
- if self.type_to_metadata.insert(type_, metadata).is_some() {
- cx.sess().bug(&format!("Type metadata for Ty '{}' is already in the TypeMap!",
- ppaux::ty_to_string(cx.tcx(), type_)));
- }
- }
-
- // Adds a UniqueTypeId to metadata mapping to the TypeMap. The method will
- // fail if the mapping already exists.
- fn register_unique_id_with_metadata(&mut self,
- cx: &CrateContext,
- unique_type_id: UniqueTypeId,
- metadata: DIType) {
- if self.unique_id_to_metadata.insert(unique_type_id, metadata).is_some() {
- let unique_type_id_str = self.get_unique_type_id_as_string(unique_type_id);
- cx.sess().bug(&format!("Type metadata for unique id '{}' is already in the TypeMap!",
- &unique_type_id_str[..]));
- }
- }
-
- fn find_metadata_for_type(&self, type_: Ty<'tcx>) -> Option<DIType> {
- self.type_to_metadata.get(&type_).cloned()
- }
-
- fn find_metadata_for_unique_id(&self, unique_type_id: UniqueTypeId) -> Option<DIType> {
- self.unique_id_to_metadata.get(&unique_type_id).cloned()
- }
-
- // Get the string representation of a UniqueTypeId. This method will fail if
- // the id is unknown.
- fn get_unique_type_id_as_string(&self, unique_type_id: UniqueTypeId) -> Rc<String> {
- let UniqueTypeId(interner_key) = unique_type_id;
- self.unique_id_interner.get(interner_key)
- }
-
- // Get the UniqueTypeId for the given type. If the UniqueTypeId for the given
- // type has been requested before, this is just a table lookup. Otherwise an
- // ID will be generated and stored for later lookup.
- fn get_unique_type_id_of_type<'a>(&mut self, cx: &CrateContext<'a, 'tcx>,
- type_: Ty<'tcx>) -> UniqueTypeId {
-
- // basic type -> {:name of the type:}
- // tuple -> {tuple_(:param-uid:)*}
- // struct -> {struct_:svh: / :node-id:_<(:param-uid:),*> }
- // enum -> {enum_:svh: / :node-id:_<(:param-uid:),*> }
- // enum variant -> {variant_:variant-name:_:enum-uid:}
- // reference (&) -> {& :pointee-uid:}
- // mut reference (&mut) -> {&mut :pointee-uid:}
- // ptr (*) -> {* :pointee-uid:}
- // mut ptr (*mut) -> {*mut :pointee-uid:}
- // unique ptr (~) -> {~ :pointee-uid:}
- // @-ptr (@) -> {@ :pointee-uid:}
- // sized vec ([T; x]) -> {[:size:] :element-uid:}
- // unsized vec ([T]) -> {[] :element-uid:}
- // trait (T) -> {trait_:svh: / :node-id:_<(:param-uid:),*> }
- // closure -> {<unsafe_> <once_> :store-sigil: |(:param-uid:),* <,_...>| -> \
- // :return-type-uid: : (:bounds:)*}
- // function -> {<unsafe_> <abi_> fn( (:param-uid:)* <,_...> ) -> \
- // :return-type-uid:}
- // unique vec box (~[]) -> {HEAP_VEC_BOX<:pointee-uid:>}
- // gc box -> {GC_BOX<:pointee-uid:>}
-
- match self.type_to_unique_id.get(&type_).cloned() {
- Some(unique_type_id) => return unique_type_id,
- None => { /* generate one */}
- };
-
- let mut unique_type_id = String::with_capacity(256);
- unique_type_id.push('{');
-
- match type_.sty {
- ty::ty_bool |
- ty::ty_char |
- ty::ty_str |
- ty::ty_int(_) |
- ty::ty_uint(_) |
- ty::ty_float(_) => {
- push_debuginfo_type_name(cx, type_, false, &mut unique_type_id);
- },
- ty::ty_enum(def_id, substs) => {
- unique_type_id.push_str("enum ");
- from_def_id_and_substs(self, cx, def_id, substs, &mut unique_type_id);
- },
- ty::ty_struct(def_id, substs) => {
- unique_type_id.push_str("struct ");
- from_def_id_and_substs(self, cx, def_id, substs, &mut unique_type_id);
- },
- ty::ty_tup(ref component_types) if component_types.is_empty() => {
- push_debuginfo_type_name(cx, type_, false, &mut unique_type_id);
- },
- ty::ty_tup(ref component_types) => {
- unique_type_id.push_str("tuple ");
- for &component_type in component_types {
- let component_type_id =
- self.get_unique_type_id_of_type(cx, component_type);
- let component_type_id =
- self.get_unique_type_id_as_string(component_type_id);
- unique_type_id.push_str(&component_type_id[..]);
- }
- },
- ty::ty_uniq(inner_type) => {
- unique_type_id.push('~');
- let inner_type_id = self.get_unique_type_id_of_type(cx, inner_type);
- let inner_type_id = self.get_unique_type_id_as_string(inner_type_id);
- unique_type_id.push_str(&inner_type_id[..]);
- },
- ty::ty_ptr(ty::mt { ty: inner_type, mutbl } ) => {
- unique_type_id.push('*');
- if mutbl == ast::MutMutable {
- unique_type_id.push_str("mut");
- }
-
- let inner_type_id = self.get_unique_type_id_of_type(cx, inner_type);
- let inner_type_id = self.get_unique_type_id_as_string(inner_type_id);
- unique_type_id.push_str(&inner_type_id[..]);
- },
- ty::ty_rptr(_, ty::mt { ty: inner_type, mutbl }) => {
- unique_type_id.push('&');
- if mutbl == ast::MutMutable {
- unique_type_id.push_str("mut");
- }
-
- let inner_type_id = self.get_unique_type_id_of_type(cx, inner_type);
- let inner_type_id = self.get_unique_type_id_as_string(inner_type_id);
- unique_type_id.push_str(&inner_type_id[..]);
- },
- ty::ty_vec(inner_type, optional_length) => {
- match optional_length {
- Some(len) => {
- unique_type_id.push_str(&format!("[{}]", len));
- }
- None => {
- unique_type_id.push_str("[]");
- }
- };
-
- let inner_type_id = self.get_unique_type_id_of_type(cx, inner_type);
- let inner_type_id = self.get_unique_type_id_as_string(inner_type_id);
- unique_type_id.push_str(&inner_type_id[..]);
- },
- ty::ty_trait(ref trait_data) => {
- unique_type_id.push_str("trait ");
-
- let principal =
- ty::erase_late_bound_regions(cx.tcx(),
- &trait_data.principal);
-
- from_def_id_and_substs(self,
- cx,
- principal.def_id,
- principal.substs,
- &mut unique_type_id);
- },
- ty::ty_bare_fn(_, &ty::BareFnTy{ unsafety, abi, ref sig } ) => {
- if unsafety == ast::Unsafety::Unsafe {
- unique_type_id.push_str("unsafe ");
- }
-
- unique_type_id.push_str(abi.name());
-
- unique_type_id.push_str(" fn(");
-
- let sig = ty::erase_late_bound_regions(cx.tcx(), sig);
-
- for ¶meter_type in &sig.inputs {
- let parameter_type_id =
- self.get_unique_type_id_of_type(cx, parameter_type);
- let parameter_type_id =
- self.get_unique_type_id_as_string(parameter_type_id);
- unique_type_id.push_str(¶meter_type_id[..]);
- unique_type_id.push(',');
- }
-
- if sig.variadic {
- unique_type_id.push_str("...");
- }
-
- unique_type_id.push_str(")->");
- match sig.output {
- ty::FnConverging(ret_ty) => {
- let return_type_id = self.get_unique_type_id_of_type(cx, ret_ty);
- let return_type_id = self.get_unique_type_id_as_string(return_type_id);
- unique_type_id.push_str(&return_type_id[..]);
- }
- ty::FnDiverging => {
- unique_type_id.push_str("!");
- }
- }
- },
- ty::ty_closure(def_id, substs) => {
- let typer = NormalizingClosureTyper::new(cx.tcx());
- let closure_ty = typer.closure_type(def_id, substs);
- self.get_unique_type_id_of_closure_type(cx,
- closure_ty,
- &mut unique_type_id);
- },
- _ => {
- cx.sess().bug(&format!("get_unique_type_id_of_type() - unexpected type: {}, {:?}",
- &ppaux::ty_to_string(cx.tcx(), type_),
- type_.sty))
- }
- };
-
- unique_type_id.push('}');
-
- // Trim to size before storing permanently
- unique_type_id.shrink_to_fit();
-
- let key = self.unique_id_interner.intern(Rc::new(unique_type_id));
- self.type_to_unique_id.insert(type_, UniqueTypeId(key));
-
- return UniqueTypeId(key);
-
- fn from_def_id_and_substs<'a, 'tcx>(type_map: &mut TypeMap<'tcx>,
- cx: &CrateContext<'a, 'tcx>,
- def_id: ast::DefId,
- substs: &subst::Substs<'tcx>,
- output: &mut String) {
- // First, find out the 'real' def_id of the type. Items inlined from
- // other crates have to be mapped back to their source.
- let source_def_id = if def_id.krate == ast::LOCAL_CRATE {
- match cx.external_srcs().borrow().get(&def_id.node).cloned() {
- Some(source_def_id) => {
- // The given def_id identifies the inlined copy of a
- // type definition, let's take the source of the copy.
- source_def_id
- }
- None => def_id
- }
- } else {
- def_id
- };
-
- // Get the crate hash as first part of the identifier.
- let crate_hash = if source_def_id.krate == ast::LOCAL_CRATE {
- cx.link_meta().crate_hash.clone()
- } else {
- cx.sess().cstore.get_crate_hash(source_def_id.krate)
- };
-
- output.push_str(crate_hash.as_str());
- output.push_str("/");
- output.push_str(&format!("{:x}", def_id.node));
-
- // Maybe check that there is no self type here.
-
- let tps = substs.types.get_slice(subst::TypeSpace);
- if !tps.is_empty() {
- output.push('<');
-
- for &type_parameter in tps {
- let param_type_id =
- type_map.get_unique_type_id_of_type(cx, type_parameter);
- let param_type_id =
- type_map.get_unique_type_id_as_string(param_type_id);
- output.push_str(¶m_type_id[..]);
- output.push(',');
- }
-
- output.push('>');
- }
- }
- }
-
- fn get_unique_type_id_of_closure_type<'a>(&mut self,
- cx: &CrateContext<'a, 'tcx>,
- closure_ty: ty::ClosureTy<'tcx>,
- unique_type_id: &mut String) {
- let ty::ClosureTy { unsafety,
- ref sig,
- abi: _ } = closure_ty;
-
- if unsafety == ast::Unsafety::Unsafe {
- unique_type_id.push_str("unsafe ");
- }
-
- unique_type_id.push_str("|");
-
- let sig = ty::erase_late_bound_regions(cx.tcx(), sig);
-
- for ¶meter_type in &sig.inputs {
- let parameter_type_id =
- self.get_unique_type_id_of_type(cx, parameter_type);
- let parameter_type_id =
- self.get_unique_type_id_as_string(parameter_type_id);
- unique_type_id.push_str(¶meter_type_id[..]);
- unique_type_id.push(',');
- }
-
- if sig.variadic {
- unique_type_id.push_str("...");
- }
-
- unique_type_id.push_str("|->");
-
- match sig.output {
- ty::FnConverging(ret_ty) => {
- let return_type_id = self.get_unique_type_id_of_type(cx, ret_ty);
- let return_type_id = self.get_unique_type_id_as_string(return_type_id);
- unique_type_id.push_str(&return_type_id[..]);
- }
- ty::FnDiverging => {
- unique_type_id.push_str("!");
- }
- }
- }
-
- // Get the UniqueTypeId for an enum variant. Enum variants are not really
- // types of their own, so they need special handling. We still need a
- // UniqueTypeId for them, since to debuginfo they *are* real types.
- fn get_unique_type_id_of_enum_variant<'a>(&mut self,
- cx: &CrateContext<'a, 'tcx>,
- enum_type: Ty<'tcx>,
- variant_name: &str)
- -> UniqueTypeId {
- let enum_type_id = self.get_unique_type_id_of_type(cx, enum_type);
- let enum_variant_type_id = format!("{}::{}",
- &self.get_unique_type_id_as_string(enum_type_id),
- variant_name);
- let interner_key = self.unique_id_interner.intern(Rc::new(enum_variant_type_id));
- UniqueTypeId(interner_key)
- }
-}
-
-// Returns from the enclosing function if the type metadata with the given
-// unique id can be found in the type map
-macro_rules! return_if_metadata_created_in_meantime {
- ($cx: expr, $unique_type_id: expr) => (
- match debug_context($cx).type_map
- .borrow()
- .find_metadata_for_unique_id($unique_type_id) {
- Some(metadata) => return MetadataCreationResult::new(metadata, true),
- None => { /* proceed normally */ }
- };
- )
-}
-
-
-/// A context object for maintaining all state needed by the debuginfo module.
-pub struct CrateDebugContext<'tcx> {
- llcontext: ContextRef,
- builder: DIBuilderRef,
- current_debug_location: Cell<InternalDebugLocation>,
- created_files: RefCell<FnvHashMap<String, DIFile>>,
- created_enum_disr_types: RefCell<DefIdMap<DIType>>,
-
- type_map: RefCell<TypeMap<'tcx>>,
- namespace_map: RefCell<FnvHashMap<Vec<ast::Name>, Rc<NamespaceTreeNode>>>,
-
- // This collection is used to assert that composite types (structs, enums,
- // ...) have their members only set once:
- composite_types_completed: RefCell<FnvHashSet<DIType>>,
-}
-
-impl<'tcx> CrateDebugContext<'tcx> {
- pub fn new(llmod: ModuleRef) -> CrateDebugContext<'tcx> {
- debug!("CrateDebugContext::new");
- let builder = unsafe { llvm::LLVMDIBuilderCreate(llmod) };
- // DIBuilder inherits context from the module, so we'd better use the same one
- let llcontext = unsafe { llvm::LLVMGetModuleContext(llmod) };
- return CrateDebugContext {
- llcontext: llcontext,
- builder: builder,
- current_debug_location: Cell::new(UnknownLocation),
- created_files: RefCell::new(FnvHashMap()),
- created_enum_disr_types: RefCell::new(DefIdMap()),
- type_map: RefCell::new(TypeMap::new()),
- namespace_map: RefCell::new(FnvHashMap()),
- composite_types_completed: RefCell::new(FnvHashSet()),
- };
- }
-}
-
-pub enum FunctionDebugContext {
- RegularContext(Box<FunctionDebugContextData>),
- DebugInfoDisabled,
- FunctionWithoutDebugInfo,
-}
-
-impl FunctionDebugContext {
- fn get_ref<'a>(&'a self,
- cx: &CrateContext,
- span: Span)
- -> &'a FunctionDebugContextData {
- match *self {
- FunctionDebugContext::RegularContext(box ref data) => data,
- FunctionDebugContext::DebugInfoDisabled => {
- cx.sess().span_bug(span,
- FunctionDebugContext::debuginfo_disabled_message());
- }
- FunctionDebugContext::FunctionWithoutDebugInfo => {
- cx.sess().span_bug(span,
- FunctionDebugContext::should_be_ignored_message());
- }
- }
- }
-
- fn debuginfo_disabled_message() -> &'static str {
- "debuginfo: Error trying to access FunctionDebugContext although debug info is disabled!"
- }
-
- fn should_be_ignored_message() -> &'static str {
- "debuginfo: Error trying to access FunctionDebugContext for function that should be \
- ignored by debug info!"
- }
-}
-
-struct FunctionDebugContextData {
- scope_map: RefCell<NodeMap<DIScope>>,
- fn_metadata: DISubprogram,
- argument_counter: Cell<usize>,
- source_locations_enabled: Cell<bool>,
- source_location_override: Cell<bool>,
-}
-
-enum VariableAccess<'a> {
- // The llptr given is an alloca containing the variable's value
- DirectVariable { alloca: ValueRef },
- // The llptr given is an alloca containing the start of some pointer chain
- // leading to the variable's content.
- IndirectVariable { alloca: ValueRef, address_operations: &'a [i64] }
-}
-
-enum VariableKind {
- ArgumentVariable(usize /*index*/),
- LocalVariable,
- CapturedVariable,
-}
-
-/// Create any deferred debug metadata nodes
-pub fn finalize(cx: &CrateContext) {
- if cx.dbg_cx().is_none() {
- return;
- }
-
- debug!("finalize");
- let _ = compile_unit_metadata(cx);
-
- if needs_gdb_debug_scripts_section(cx) {
- // Add a .debug_gdb_scripts section to this compile-unit. This will
- // cause GDB to try and load the gdb_load_rust_pretty_printers.py file,
- // which activates the Rust pretty printers for binary this section is
- // contained in.
- get_or_insert_gdb_debug_scripts_section_global(cx);
- }
-
- unsafe {
- llvm::LLVMDIBuilderFinalize(DIB(cx));
- llvm::LLVMDIBuilderDispose(DIB(cx));
- // Debuginfo generation in LLVM by default uses a higher
- // version of dwarf than OS X currently understands. We can
- // instruct LLVM to emit an older version of dwarf, however,
- // for OS X to understand. For more info see #11352
- // This can be overridden using --llvm-opts -dwarf-version,N.
- // Android has the same issue (#22398)
- if cx.sess().target.target.options.is_like_osx ||
- cx.sess().target.target.options.is_like_android {
- llvm::LLVMRustAddModuleFlag(cx.llmod(),
- "Dwarf Version\0".as_ptr() as *const _,
- 2)
- }
-
- // Prevent bitcode readers from deleting the debug info.
- let ptr = "Debug Info Version\0".as_ptr();
- llvm::LLVMRustAddModuleFlag(cx.llmod(), ptr as *const _,
- llvm::LLVMRustDebugMetadataVersion);
- };
-}
-
-/// Creates debug information for the given global variable.
-///
-/// Adds the created metadata nodes directly to the crate's IR.
-pub fn create_global_var_metadata(cx: &CrateContext,
- node_id: ast::NodeId,
- global: ValueRef) {
- if cx.dbg_cx().is_none() {
- return;
- }
-
- // Don't create debuginfo for globals inlined from other crates. The other
- // crate should already contain debuginfo for it. More importantly, the
- // global might not even exist in un-inlined form anywhere which would lead
- // to a linker errors.
- if cx.external_srcs().borrow().contains_key(&node_id) {
- return;
- }
-
- let var_item = cx.tcx().map.get(node_id);
-
- let (name, span) = match var_item {
- ast_map::NodeItem(item) => {
- match item.node {
- ast::ItemStatic(..) => (item.ident.name, item.span),
- ast::ItemConst(..) => (item.ident.name, item.span),
- _ => {
- cx.sess()
- .span_bug(item.span,
- &format!("debuginfo::\
- create_global_var_metadata() -
- Captured var-id refers to \
- unexpected ast_item variant: {:?}",
- var_item))
- }
- }
- },
- _ => cx.sess().bug(&format!("debuginfo::create_global_var_metadata() \
- - Captured var-id refers to unexpected \
- ast_map variant: {:?}",
- var_item))
- };
-
- let (file_metadata, line_number) = if span != codemap::DUMMY_SP {
- let loc = span_start(cx, span);
- (file_metadata(cx, &loc.file.name), loc.line as c_uint)
- } else {
- (UNKNOWN_FILE_METADATA, UNKNOWN_LINE_NUMBER)
- };
-
- let is_local_to_unit = is_node_local_to_unit(cx, node_id);
- let variable_type = ty::node_id_to_type(cx.tcx(), node_id);
- let type_metadata = type_metadata(cx, variable_type, span);
- let namespace_node = namespace_for_item(cx, ast_util::local_def(node_id));
- let var_name = token::get_name(name).to_string();
- let linkage_name =
- namespace_node.mangled_name_of_contained_item(&var_name[..]);
- let var_scope = namespace_node.scope;
-
- let var_name = CString::new(var_name).unwrap();
- let linkage_name = CString::new(linkage_name).unwrap();
- unsafe {
- llvm::LLVMDIBuilderCreateStaticVariable(DIB(cx),
- var_scope,
- var_name.as_ptr(),
- linkage_name.as_ptr(),
- file_metadata,
- line_number,
- type_metadata,
- is_local_to_unit,
- global,
- ptr::null_mut());
- }
-}
-
-/// Creates debug information for the given local variable.
-///
-/// This function assumes that there's a datum for each pattern component of the
-/// local in `bcx.fcx.lllocals`.
-/// Adds the created metadata nodes directly to the crate's IR.
-pub fn create_local_var_metadata(bcx: Block, local: &ast::Local) {
- if bcx.unreachable.get() ||
- fn_should_be_ignored(bcx.fcx) ||
- bcx.sess().opts.debuginfo != FullDebugInfo {
- return;
- }
-
- let cx = bcx.ccx();
- let def_map = &cx.tcx().def_map;
- let locals = bcx.fcx.lllocals.borrow();
-
- pat_util::pat_bindings(def_map, &*local.pat, |_, node_id, span, var_ident| {
- let datum = match locals.get(&node_id) {
- Some(datum) => datum,
- None => {
- bcx.sess().span_bug(span,
- &format!("no entry in lllocals table for {}",
- node_id));
- }
- };
-
- if unsafe { llvm::LLVMIsAAllocaInst(datum.val) } == ptr::null_mut() {
- cx.sess().span_bug(span, "debuginfo::create_local_var_metadata() - \
- Referenced variable location is not an alloca!");
- }
-
- let scope_metadata = scope_metadata(bcx.fcx, node_id, span);
-
- declare_local(bcx,
- var_ident.node.name,
- datum.ty,
- scope_metadata,
- DirectVariable { alloca: datum.val },
- LocalVariable,
- span);
- })
-}
-
-/// Creates debug information for a variable captured in a closure.
-///
-/// Adds the created metadata nodes directly to the crate's IR.
-pub fn create_captured_var_metadata<'blk, 'tcx>(bcx: Block<'blk, 'tcx>,
- node_id: ast::NodeId,
- env_pointer: ValueRef,
- env_index: usize,
- captured_by_ref: bool,
- span: Span) {
- if bcx.unreachable.get() ||
- fn_should_be_ignored(bcx.fcx) ||
- bcx.sess().opts.debuginfo != FullDebugInfo {
- return;
- }
-
- let cx = bcx.ccx();
-
- let ast_item = cx.tcx().map.find(node_id);
-
- let variable_name = match ast_item {
- None => {
- cx.sess().span_bug(span, "debuginfo::create_captured_var_metadata: node not found");
- }
- Some(ast_map::NodeLocal(pat)) | Some(ast_map::NodeArg(pat)) => {
- match pat.node {
- ast::PatIdent(_, ref path1, _) => {
- path1.node.name
- }
- _ => {
- cx.sess()
- .span_bug(span,
- &format!(
- "debuginfo::create_captured_var_metadata() - \
- Captured var-id refers to unexpected \
- ast_map variant: {:?}",
- ast_item));
- }
- }
- }
- _ => {
- cx.sess()
- .span_bug(span,
- &format!("debuginfo::create_captured_var_metadata() - \
- Captured var-id refers to unexpected \
- ast_map variant: {:?}",
- ast_item));
- }
- };
-
- let variable_type = common::node_id_type(bcx, node_id);
- let scope_metadata = bcx.fcx.debug_context.get_ref(cx, span).fn_metadata;
-
- // env_pointer is the alloca containing the pointer to the environment,
- // so it's type is **EnvironmentType. In order to find out the type of
- // the environment we have to "dereference" two times.
- let llvm_env_data_type = common::val_ty(env_pointer).element_type()
- .element_type();
- let byte_offset_of_var_in_env = machine::llelement_offset(cx,
- llvm_env_data_type,
- env_index);
-
- let address_operations = unsafe {
- [llvm::LLVMDIBuilderCreateOpDeref(),
- llvm::LLVMDIBuilderCreateOpPlus(),
- byte_offset_of_var_in_env as i64,
- llvm::LLVMDIBuilderCreateOpDeref()]
- };
-
- let address_op_count = if captured_by_ref {
- address_operations.len()
- } else {
- address_operations.len() - 1
- };
-
- let variable_access = IndirectVariable {
- alloca: env_pointer,
- address_operations: &address_operations[..address_op_count]
- };
-
- declare_local(bcx,
- variable_name,
- variable_type,
- scope_metadata,
- variable_access,
- CapturedVariable,
- span);
-}
-
-/// Creates debug information for a local variable introduced in the head of a
-/// match-statement arm.
-///
-/// Adds the created metadata nodes directly to the crate's IR.
-pub fn create_match_binding_metadata<'blk, 'tcx>(bcx: Block<'blk, 'tcx>,
- variable_name: ast::Name,
- binding: BindingInfo<'tcx>) {
- if bcx.unreachable.get() ||
- fn_should_be_ignored(bcx.fcx) ||
- bcx.sess().opts.debuginfo != FullDebugInfo {
- return;
- }
-
- let scope_metadata = scope_metadata(bcx.fcx, binding.id, binding.span);
- let aops = unsafe {
- [llvm::LLVMDIBuilderCreateOpDeref()]
- };
- // Regardless of the actual type (`T`) we're always passed the stack slot (alloca)
- // for the binding. For ByRef bindings that's a `T*` but for ByMove bindings we
- // actually have `T**`. So to get the actual variable we need to dereference once
- // more. For ByCopy we just use the stack slot we created for the binding.
- let var_access = match binding.trmode {
- TrByCopy(llbinding) => DirectVariable {
- alloca: llbinding
- },
- TrByMove => IndirectVariable {
- alloca: binding.llmatch,
- address_operations: &aops
- },
- TrByRef => DirectVariable {
- alloca: binding.llmatch
- }
- };
-
- declare_local(bcx,
- variable_name,
- binding.ty,
- scope_metadata,
- var_access,
- LocalVariable,
- binding.span);
-}
-
-/// Creates debug information for the given function argument.
-///
-/// This function assumes that there's a datum for each pattern component of the
-/// argument in `bcx.fcx.lllocals`.
-/// Adds the created metadata nodes directly to the crate's IR.
-pub fn create_argument_metadata(bcx: Block, arg: &ast::Arg) {
- if bcx.unreachable.get() ||
- fn_should_be_ignored(bcx.fcx) ||
- bcx.sess().opts.debuginfo != FullDebugInfo {
- return;
- }
-
- let def_map = &bcx.tcx().def_map;
- let scope_metadata = bcx
- .fcx
- .debug_context
- .get_ref(bcx.ccx(), arg.pat.span)
- .fn_metadata;
- let locals = bcx.fcx.lllocals.borrow();
-
- pat_util::pat_bindings(def_map, &*arg.pat, |_, node_id, span, var_ident| {
- let datum = match locals.get(&node_id) {
- Some(v) => v,
- None => {
- bcx.sess().span_bug(span,
- &format!("no entry in lllocals table for {}",
- node_id));
- }
- };
-
- if unsafe { llvm::LLVMIsAAllocaInst(datum.val) } == ptr::null_mut() {
- bcx.sess().span_bug(span, "debuginfo::create_argument_metadata() - \
- Referenced variable location is not an alloca!");
- }
-
- let argument_index = {
- let counter = &bcx
- .fcx
- .debug_context
- .get_ref(bcx.ccx(), span)
- .argument_counter;
- let argument_index = counter.get();
- counter.set(argument_index + 1);
- argument_index
- };
-
- declare_local(bcx,
- var_ident.node.name,
- datum.ty,
- scope_metadata,
- DirectVariable { alloca: datum.val },
- ArgumentVariable(argument_index),
- span);
- })
-}
-
-pub fn get_cleanup_debug_loc_for_ast_node<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
- node_id: ast::NodeId,
- node_span: Span,
- is_block: bool)
- -> NodeIdAndSpan {
- // A debug location needs two things:
- // (1) A span (of which only the beginning will actually be used)
- // (2) An AST node-id which will be used to look up the lexical scope
- // for the location in the functions scope-map
- //
- // This function will calculate the debug location for compiler-generated
- // cleanup calls that are executed when control-flow leaves the
- // scope identified by `node_id`.
- //
- // For everything but block-like things we can simply take id and span of
- // the given expression, meaning that from a debugger's view cleanup code is
- // executed at the same source location as the statement/expr itself.
- //
- // Blocks are a special case. Here we want the cleanup to be linked to the
- // closing curly brace of the block. The *scope* the cleanup is executed in
- // is up to debate: It could either still be *within* the block being
- // cleaned up, meaning that locals from the block are still visible in the
- // debugger.
- // Or it could be in the scope that the block is contained in, so any locals
- // from within the block are already considered out-of-scope and thus not
- // accessible in the debugger anymore.
- //
- // The current implementation opts for the second option: cleanup of a block
- // already happens in the parent scope of the block. The main reason for
- // this decision is that scoping becomes controlflow dependent when variable
- // shadowing is involved and it's impossible to decide statically which
- // scope is actually left when the cleanup code is executed.
- // In practice it shouldn't make much of a difference.
-
- let mut cleanup_span = node_span;
-
- if is_block {
- // Not all blocks actually have curly braces (e.g. simple closure
- // bodies), in which case we also just want to return the span of the
- // whole expression.
- let code_snippet = cx.sess().codemap().span_to_snippet(node_span);
- if let Ok(code_snippet) = code_snippet {
- let bytes = code_snippet.as_bytes();
-
- if !bytes.is_empty() && &bytes[bytes.len()-1..] == b"}" {
- cleanup_span = Span {
- lo: node_span.hi - codemap::BytePos(1),
- hi: node_span.hi,
- expn_id: node_span.expn_id
- };
- }
- }
- }
-
- NodeIdAndSpan {
- id: node_id,
- span: cleanup_span
- }
-}
-
-#[derive(Copy, Clone, PartialEq, Eq, Debug)]
-pub enum DebugLoc {
- At(ast::NodeId, Span),
- None
-}
-
-impl DebugLoc {
- pub fn apply(&self, fcx: &FunctionContext) {
- match *self {
- DebugLoc::At(node_id, span) => {
- set_source_location(fcx, node_id, span);
- }
- DebugLoc::None => {
- clear_source_location(fcx);
- }
- }
- }
-}
-
-pub trait ToDebugLoc {
- fn debug_loc(&self) -> DebugLoc;
-}
-
-impl ToDebugLoc for ast::Expr {
- fn debug_loc(&self) -> DebugLoc {
- DebugLoc::At(self.id, self.span)
- }
-}
-
-impl ToDebugLoc for NodeIdAndSpan {
- fn debug_loc(&self) -> DebugLoc {
- DebugLoc::At(self.id, self.span)
- }
-}
-
-impl ToDebugLoc for Option<NodeIdAndSpan> {
- fn debug_loc(&self) -> DebugLoc {
- match *self {
- Some(NodeIdAndSpan { id, span }) => DebugLoc::At(id, span),
- None => DebugLoc::None
- }
- }
-}
-
-/// Sets the current debug location at the beginning of the span.
-///
-/// Maps to a call to llvm::LLVMSetCurrentDebugLocation(...). The node_id
-/// parameter is used to reliably find the correct visibility scope for the code
-/// position.
-pub fn set_source_location(fcx: &FunctionContext,
- node_id: ast::NodeId,
- span: Span) {
- match fcx.debug_context {
- FunctionDebugContext::DebugInfoDisabled => return,
- FunctionDebugContext::FunctionWithoutDebugInfo => {
- set_debug_location(fcx.ccx, UnknownLocation);
- return;
- }
- FunctionDebugContext::RegularContext(box ref function_debug_context) => {
- if function_debug_context.source_location_override.get() {
- // Just ignore any attempts to set a new debug location while
- // the override is active.
- return;
- }
-
- let cx = fcx.ccx;
-
- debug!("set_source_location: {}", cx.sess().codemap().span_to_string(span));
-
- if function_debug_context.source_locations_enabled.get() {
- let loc = span_start(cx, span);
- let scope = scope_metadata(fcx, node_id, span);
-
- set_debug_location(cx, InternalDebugLocation::new(scope,
- loc.line,
- loc.col.to_usize()));
- } else {
- set_debug_location(cx, UnknownLocation);
- }
- }
- }
-}
-
-/// This function makes sure that all debug locations emitted while executing
-/// `wrapped_function` are set to the given `debug_loc`.
-pub fn with_source_location_override<F, R>(fcx: &FunctionContext,
- debug_loc: DebugLoc,
- wrapped_function: F) -> R
- where F: FnOnce() -> R
-{
- match fcx.debug_context {
- FunctionDebugContext::DebugInfoDisabled => {
- wrapped_function()
- }
- FunctionDebugContext::FunctionWithoutDebugInfo => {
- set_debug_location(fcx.ccx, UnknownLocation);
- wrapped_function()
- }
- FunctionDebugContext::RegularContext(box ref function_debug_context) => {
- if function_debug_context.source_location_override.get() {
- wrapped_function()
- } else {
- debug_loc.apply(fcx);
- function_debug_context.source_location_override.set(true);
- let result = wrapped_function();
- function_debug_context.source_location_override.set(false);
- result
- }
- }
- }
-}
-
-/// Clears the current debug location.
-///
-/// Instructions generated hereafter won't be assigned a source location.
-pub fn clear_source_location(fcx: &FunctionContext) {
- if fn_should_be_ignored(fcx) {
- return;
- }
-
- set_debug_location(fcx.ccx, UnknownLocation);
-}
-
-/// Enables emitting source locations for the given functions.
-///
-/// Since we don't want source locations to be emitted for the function prelude,
-/// they are disabled when beginning to translate a new function. This functions
-/// switches source location emitting on and must therefore be called before the
-/// first real statement/expression of the function is translated.
-pub fn start_emitting_source_locations(fcx: &FunctionContext) {
- match fcx.debug_context {
- FunctionDebugContext::RegularContext(box ref data) => {
- data.source_locations_enabled.set(true)
- },
- _ => { /* safe to ignore */ }
- }
-}
-
-/// Creates the function-specific debug context.
-///
-/// Returns the FunctionDebugContext for the function which holds state needed
-/// for debug info creation. The function may also return another variant of the
-/// FunctionDebugContext enum which indicates why no debuginfo should be created
-/// for the function.
-pub fn create_function_debug_context<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
- fn_ast_id: ast::NodeId,
- param_substs: &Substs<'tcx>,
- llfn: ValueRef) -> FunctionDebugContext {
- if cx.sess().opts.debuginfo == NoDebugInfo {
- return FunctionDebugContext::DebugInfoDisabled;
- }
-
- // Clear the debug location so we don't assign them in the function prelude.
- // Do this here already, in case we do an early exit from this function.
- set_debug_location(cx, UnknownLocation);
-
- if fn_ast_id == ast::DUMMY_NODE_ID {
- // This is a function not linked to any source location, so don't
- // generate debuginfo for it.
- return FunctionDebugContext::FunctionWithoutDebugInfo;
- }
-
- let empty_generics = ast_util::empty_generics();
-
- let fnitem = cx.tcx().map.get(fn_ast_id);
-
- let (name, fn_decl, generics, top_level_block, span, has_path) = match fnitem {
- ast_map::NodeItem(ref item) => {
- if contains_nodebug_attribute(&item.attrs) {
- return FunctionDebugContext::FunctionWithoutDebugInfo;
- }
-
- match item.node {
- ast::ItemFn(ref fn_decl, _, _, ref generics, ref top_level_block) => {
- (item.ident.name, fn_decl, generics, top_level_block, item.span, true)
- }
- _ => {
- cx.sess().span_bug(item.span,
- "create_function_debug_context: item bound to non-function");
- }
- }
- }
- ast_map::NodeImplItem(impl_item) => {
- match impl_item.node {
- ast::MethodImplItem(ref sig, ref body) => {
- if contains_nodebug_attribute(&impl_item.attrs) {
- return FunctionDebugContext::FunctionWithoutDebugInfo;
- }
-
- (impl_item.ident.name,
- &sig.decl,
- &sig.generics,
- body,
- impl_item.span,
- true)
- }
- _ => {
- cx.sess().span_bug(impl_item.span,
- "create_function_debug_context() \
- called on non-method impl item?!")
- }
- }
- }
- ast_map::NodeExpr(ref expr) => {
- match expr.node {
- ast::ExprClosure(_, ref fn_decl, ref top_level_block) => {
- let name = format!("fn{}", token::gensym("fn"));
- let name = token::intern(&name[..]);
- (name, fn_decl,
- // This is not quite right. It should actually inherit
- // the generics of the enclosing function.
- &empty_generics,
- top_level_block,
- expr.span,
- // Don't try to lookup the item path:
- false)
- }
- _ => cx.sess().span_bug(expr.span,
- "create_function_debug_context: expected an expr_fn_block here")
- }
- }
- ast_map::NodeTraitItem(trait_item) => {
- match trait_item.node {
- ast::MethodTraitItem(ref sig, Some(ref body)) => {
- if contains_nodebug_attribute(&trait_item.attrs) {
- return FunctionDebugContext::FunctionWithoutDebugInfo;
- }
-
- (trait_item.ident.name,
- &sig.decl,
- &sig.generics,
- body,
- trait_item.span,
- true)
- }
- _ => {
- cx.sess()
- .bug(&format!("create_function_debug_context: \
- unexpected sort of node: {:?}",
- fnitem))
- }
- }
- }
- ast_map::NodeForeignItem(..) |
- ast_map::NodeVariant(..) |
- ast_map::NodeStructCtor(..) => {
- return FunctionDebugContext::FunctionWithoutDebugInfo;
- }
- _ => cx.sess().bug(&format!("create_function_debug_context: \
- unexpected sort of node: {:?}",
- fnitem))
- };
-
- // This can be the case for functions inlined from another crate
- if span == codemap::DUMMY_SP {
- return FunctionDebugContext::FunctionWithoutDebugInfo;
- }
-
- let loc = span_start(cx, span);
- let file_metadata = file_metadata(cx, &loc.file.name);
-
- let function_type_metadata = unsafe {
- let fn_signature = get_function_signature(cx,
- fn_ast_id,
- &*fn_decl,
- param_substs,
- span);
- llvm::LLVMDIBuilderCreateSubroutineType(DIB(cx), file_metadata, fn_signature)
- };
-
- // Get_template_parameters() will append a `<...>` clause to the function
- // name if necessary.
- let mut function_name = String::from_str(&token::get_name(name));
- let template_parameters = get_template_parameters(cx,
- generics,
- param_substs,
- file_metadata,
- &mut function_name);
-
- // There is no ast_map::Path for ast::ExprClosure-type functions. For now,
- // just don't put them into a namespace. In the future this could be improved
- // somehow (storing a path in the ast_map, or construct a path using the
- // enclosing function).
- let (linkage_name, containing_scope) = if has_path {
- let namespace_node = namespace_for_item(cx, ast_util::local_def(fn_ast_id));
- let linkage_name = namespace_node.mangled_name_of_contained_item(
- &function_name[..]);
- let containing_scope = namespace_node.scope;
- (linkage_name, containing_scope)
- } else {
- (function_name.clone(), file_metadata)
- };
-
- // Clang sets this parameter to the opening brace of the function's block,
- // so let's do this too.
- let scope_line = span_start(cx, top_level_block.span).line;
-
- let is_local_to_unit = is_node_local_to_unit(cx, fn_ast_id);
-
- let function_name = CString::new(function_name).unwrap();
- let linkage_name = CString::new(linkage_name).unwrap();
- let fn_metadata = unsafe {
- llvm::LLVMDIBuilderCreateFunction(
- DIB(cx),
- containing_scope,
- function_name.as_ptr(),
- linkage_name.as_ptr(),
- file_metadata,
- loc.line as c_uint,
- function_type_metadata,
- is_local_to_unit,
- true,
- scope_line as c_uint,
- FlagPrototyped as c_uint,
- cx.sess().opts.optimize != config::No,
- llfn,
- template_parameters,
- ptr::null_mut())
- };
-
- let scope_map = create_scope_map(cx,
- &fn_decl.inputs,
- &*top_level_block,
- fn_metadata,
- fn_ast_id);
-
- // Initialize fn debug context (including scope map and namespace map)
- let fn_debug_context = box FunctionDebugContextData {
- scope_map: RefCell::new(scope_map),
- fn_metadata: fn_metadata,
- argument_counter: Cell::new(1),
- source_locations_enabled: Cell::new(false),
- source_location_override: Cell::new(false),
- };
-
-
-
- return FunctionDebugContext::RegularContext(fn_debug_context);
-
- fn get_function_signature<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
- fn_ast_id: ast::NodeId,
- fn_decl: &ast::FnDecl,
- param_substs: &Substs<'tcx>,
- error_reporting_span: Span) -> DIArray {
- if cx.sess().opts.debuginfo == LimitedDebugInfo {
- return create_DIArray(DIB(cx), &[]);
- }
-
- let mut signature = Vec::with_capacity(fn_decl.inputs.len() + 1);
-
- // Return type -- llvm::DIBuilder wants this at index 0
- assert_type_for_node_id(cx, fn_ast_id, error_reporting_span);
- let return_type = ty::node_id_to_type(cx.tcx(), fn_ast_id);
- let return_type = monomorphize::apply_param_substs(cx.tcx(),
- param_substs,
- &return_type);
- if ty::type_is_nil(return_type) {
- signature.push(ptr::null_mut())
- } else {
- signature.push(type_metadata(cx, return_type, codemap::DUMMY_SP));
- }
-
- // Arguments types
- for arg in &fn_decl.inputs {
- assert_type_for_node_id(cx, arg.pat.id, arg.pat.span);
- let arg_type = ty::node_id_to_type(cx.tcx(), arg.pat.id);
- let arg_type = monomorphize::apply_param_substs(cx.tcx(),
- param_substs,
- &arg_type);
- signature.push(type_metadata(cx, arg_type, codemap::DUMMY_SP));
- }
-
- return create_DIArray(DIB(cx), &signature[..]);
- }
-
- fn get_template_parameters<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
- generics: &ast::Generics,
- param_substs: &Substs<'tcx>,
- file_metadata: DIFile,
- name_to_append_suffix_to: &mut String)
- -> DIArray
- {
- let self_type = param_substs.self_ty();
- let self_type = monomorphize::normalize_associated_type(cx.tcx(), &self_type);
-
- // Only true for static default methods:
- let has_self_type = self_type.is_some();
-
- if !generics.is_type_parameterized() && !has_self_type {
- return create_DIArray(DIB(cx), &[]);
- }
-
- name_to_append_suffix_to.push('<');
-
- // The list to be filled with template parameters:
- let mut template_params: Vec<DIDescriptor> =
- Vec::with_capacity(generics.ty_params.len() + 1);
-
- // Handle self type
- if has_self_type {
- let actual_self_type = self_type.unwrap();
- // Add self type name to <...> clause of function name
- let actual_self_type_name = compute_debuginfo_type_name(
- cx,
- actual_self_type,
- true);
-
- name_to_append_suffix_to.push_str(&actual_self_type_name[..]);
-
- if generics.is_type_parameterized() {
- name_to_append_suffix_to.push_str(",");
- }
-
- // Only create type information if full debuginfo is enabled
- if cx.sess().opts.debuginfo == FullDebugInfo {
- let actual_self_type_metadata = type_metadata(cx,
- actual_self_type,
- codemap::DUMMY_SP);
-
- let name = token::get_name(special_idents::type_self.name);
-
- let name = CString::new(name.as_bytes()).unwrap();
- let param_metadata = unsafe {
- llvm::LLVMDIBuilderCreateTemplateTypeParameter(
- DIB(cx),
- file_metadata,
- name.as_ptr(),
- actual_self_type_metadata,
- ptr::null_mut(),
- 0,
- 0)
- };
-
- template_params.push(param_metadata);
- }
- }
-
- // Handle other generic parameters
- let actual_types = param_substs.types.get_slice(subst::FnSpace);
- for (index, &ast::TyParam{ ident, .. }) in generics.ty_params.iter().enumerate() {
- let actual_type = actual_types[index];
- // Add actual type name to <...> clause of function name
- let actual_type_name = compute_debuginfo_type_name(cx,
- actual_type,
- true);
- name_to_append_suffix_to.push_str(&actual_type_name[..]);
-
- if index != generics.ty_params.len() - 1 {
- name_to_append_suffix_to.push_str(",");
- }
-
- // Again, only create type information if full debuginfo is enabled
- if cx.sess().opts.debuginfo == FullDebugInfo {
- let actual_type_metadata = type_metadata(cx, actual_type, codemap::DUMMY_SP);
- let ident = token::get_ident(ident);
- let name = CString::new(ident.as_bytes()).unwrap();
- let param_metadata = unsafe {
- llvm::LLVMDIBuilderCreateTemplateTypeParameter(
- DIB(cx),
- file_metadata,
- name.as_ptr(),
- actual_type_metadata,
- ptr::null_mut(),
- 0,
- 0)
- };
- template_params.push(param_metadata);
- }
- }
-
- name_to_append_suffix_to.push('>');
-
- return create_DIArray(DIB(cx), &template_params[..]);
- }
-}
-
-//=-----------------------------------------------------------------------------
-// Module-Internal debug info creation functions
-//=-----------------------------------------------------------------------------
-
-fn is_node_local_to_unit(cx: &CrateContext, node_id: ast::NodeId) -> bool
-{
- // The is_local_to_unit flag indicates whether a function is local to the
- // current compilation unit (i.e. if it is *static* in the C-sense). The
- // *reachable* set should provide a good approximation of this, as it
- // contains everything that might leak out of the current crate (by being
- // externally visible or by being inlined into something externally visible).
- // It might better to use the `exported_items` set from `driver::CrateAnalysis`
- // in the future, but (atm) this set is not available in the translation pass.
- !cx.reachable().contains(&node_id)
-}
-
-#[allow(non_snake_case)]
-fn create_DIArray(builder: DIBuilderRef, arr: &[DIDescriptor]) -> DIArray {
- return unsafe {
- llvm::LLVMDIBuilderGetOrCreateArray(builder, arr.as_ptr(), arr.len() as u32)
- };
-}
-
-fn compile_unit_metadata(cx: &CrateContext) -> DIDescriptor {
- let work_dir = &cx.sess().working_dir;
- let compile_unit_name = match cx.sess().local_crate_source_file {
- None => fallback_path(cx),
- Some(ref abs_path) => {
- if abs_path.is_relative() {
- cx.sess().warn("debuginfo: Invalid path to crate's local root source file!");
- fallback_path(cx)
- } else {
- match abs_path.relative_from(work_dir) {
- Some(ref p) if p.is_relative() => {
- if p.starts_with(Path::new("./")) {
- path2cstr(p)
- } else {
- path2cstr(&Path::new(".").join(p))
- }
- }
- _ => fallback_path(cx)
- }
- }
- }
- };
-
- debug!("compile_unit_metadata: {:?}", compile_unit_name);
- let producer = format!("rustc version {}",
- (option_env!("CFG_VERSION")).expect("CFG_VERSION"));
-
- let compile_unit_name = compile_unit_name.as_ptr();
- let work_dir = path2cstr(&work_dir);
- let producer = CString::new(producer).unwrap();
- let flags = "\0";
- let split_name = "\0";
- return unsafe {
- llvm::LLVMDIBuilderCreateCompileUnit(
- debug_context(cx).builder,
- DW_LANG_RUST,
- compile_unit_name,
- work_dir.as_ptr(),
- producer.as_ptr(),
- cx.sess().opts.optimize != config::No,
- flags.as_ptr() as *const _,
- 0,
- split_name.as_ptr() as *const _)
- };
-
- fn fallback_path(cx: &CrateContext) -> CString {
- CString::new(cx.link_meta().crate_name.clone()).unwrap()
- }
-}
-
-fn declare_local<'blk, 'tcx>(bcx: Block<'blk, 'tcx>,
- variable_name: ast::Name,
- variable_type: Ty<'tcx>,
- scope_metadata: DIScope,
- variable_access: VariableAccess,
- variable_kind: VariableKind,
- span: Span) {
- let cx: &CrateContext = bcx.ccx();
-
- let filename = span_start(cx, span).file.name.clone();
- let file_metadata = file_metadata(cx, &filename[..]);
-
- let name = token::get_name(variable_name);
- let loc = span_start(cx, span);
- let type_metadata = type_metadata(cx, variable_type, span);
-
- let (argument_index, dwarf_tag) = match variable_kind {
- ArgumentVariable(index) => (index as c_uint, DW_TAG_arg_variable),
- LocalVariable |
- CapturedVariable => (0, DW_TAG_auto_variable)
- };
-
- let name = CString::new(name.as_bytes()).unwrap();
- match (variable_access, &[][..]) {
- (DirectVariable { alloca }, address_operations) |
- (IndirectVariable {alloca, address_operations}, _) => {
- let metadata = unsafe {
- llvm::LLVMDIBuilderCreateVariable(
- DIB(cx),
- dwarf_tag,
- scope_metadata,
- name.as_ptr(),
- file_metadata,
- loc.line as c_uint,
- type_metadata,
- cx.sess().opts.optimize != config::No,
- 0,
- address_operations.as_ptr(),
- address_operations.len() as c_uint,
- argument_index)
- };
- set_debug_location(cx, InternalDebugLocation::new(scope_metadata,
- loc.line,
- loc.col.to_usize()));
- unsafe {
- let instr = llvm::LLVMDIBuilderInsertDeclareAtEnd(
- DIB(cx),
- alloca,
- metadata,
- address_operations.as_ptr(),
- address_operations.len() as c_uint,
- bcx.llbb);
-
- llvm::LLVMSetInstDebugLocation(trans::build::B(bcx).llbuilder, instr);
- }
- }
- }
-
- match variable_kind {
- ArgumentVariable(_) | CapturedVariable => {
- assert!(!bcx.fcx
- .debug_context
- .get_ref(cx, span)
- .source_locations_enabled
- .get());
- set_debug_location(cx, UnknownLocation);
- }
- _ => { /* nothing to do */ }
- }
-}
-
-fn file_metadata(cx: &CrateContext, full_path: &str) -> DIFile {
- match debug_context(cx).created_files.borrow().get(full_path) {
- Some(file_metadata) => return *file_metadata,
- None => ()
- }
-
- debug!("file_metadata: {}", full_path);
-
- // FIXME (#9639): This needs to handle non-utf8 paths
- let work_dir = cx.sess().working_dir.to_str().unwrap();
- let file_name =
- if full_path.starts_with(work_dir) {
- &full_path[work_dir.len() + 1..full_path.len()]
- } else {
- full_path
- };
-
- let file_name = CString::new(file_name).unwrap();
- let work_dir = CString::new(work_dir).unwrap();
- let file_metadata = unsafe {
- llvm::LLVMDIBuilderCreateFile(DIB(cx), file_name.as_ptr(),
- work_dir.as_ptr())
- };
-
- let mut created_files = debug_context(cx).created_files.borrow_mut();
- created_files.insert(full_path.to_string(), file_metadata);
- return file_metadata;
-}
-
-/// Finds the scope metadata node for the given AST node.
-fn scope_metadata(fcx: &FunctionContext,
- node_id: ast::NodeId,
- error_reporting_span: Span)
- -> DIScope {
- let scope_map = &fcx.debug_context
- .get_ref(fcx.ccx, error_reporting_span)
- .scope_map;
- match scope_map.borrow().get(&node_id).cloned() {
- Some(scope_metadata) => scope_metadata,
- None => {
- let node = fcx.ccx.tcx().map.get(node_id);
-
- fcx.ccx.sess().span_bug(error_reporting_span,
- &format!("debuginfo: Could not find scope info for node {:?}",
- node));
- }
- }
-}
-
-fn diverging_type_metadata(cx: &CrateContext) -> DIType {
- unsafe {
- llvm::LLVMDIBuilderCreateBasicType(
- DIB(cx),
- "!\0".as_ptr() as *const _,
- bytes_to_bits(0),
- bytes_to_bits(0),
- DW_ATE_unsigned)
- }
-}
-
-fn basic_type_metadata<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
- t: Ty<'tcx>) -> DIType {
-
- debug!("basic_type_metadata: {:?}", t);
-
- let (name, encoding) = match t.sty {
- ty::ty_tup(ref elements) if elements.is_empty() =>
- ("()".to_string(), DW_ATE_unsigned),
- ty::ty_bool => ("bool".to_string(), DW_ATE_boolean),
- ty::ty_char => ("char".to_string(), DW_ATE_unsigned_char),
- ty::ty_int(int_ty) => match int_ty {
- ast::TyIs => ("isize".to_string(), DW_ATE_signed),
- ast::TyI8 => ("i8".to_string(), DW_ATE_signed),
- ast::TyI16 => ("i16".to_string(), DW_ATE_signed),
- ast::TyI32 => ("i32".to_string(), DW_ATE_signed),
- ast::TyI64 => ("i64".to_string(), DW_ATE_signed)
- },
- ty::ty_uint(uint_ty) => match uint_ty {
- ast::TyUs => ("usize".to_string(), DW_ATE_unsigned),
- ast::TyU8 => ("u8".to_string(), DW_ATE_unsigned),
- ast::TyU16 => ("u16".to_string(), DW_ATE_unsigned),
- ast::TyU32 => ("u32".to_string(), DW_ATE_unsigned),
- ast::TyU64 => ("u64".to_string(), DW_ATE_unsigned)
- },
- ty::ty_float(float_ty) => match float_ty {
- ast::TyF32 => ("f32".to_string(), DW_ATE_float),
- ast::TyF64 => ("f64".to_string(), DW_ATE_float),
- },
- _ => cx.sess().bug("debuginfo::basic_type_metadata - t is invalid type")
- };
-
- let llvm_type = type_of::type_of(cx, t);
- let (size, align) = size_and_align_of(cx, llvm_type);
- let name = CString::new(name).unwrap();
- let ty_metadata = unsafe {
- llvm::LLVMDIBuilderCreateBasicType(
- DIB(cx),
- name.as_ptr(),
- bytes_to_bits(size),
- bytes_to_bits(align),
- encoding)
- };
-
- return ty_metadata;
-}
-
-fn pointer_type_metadata<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
- pointer_type: Ty<'tcx>,
- pointee_type_metadata: DIType)
- -> DIType {
- let pointer_llvm_type = type_of::type_of(cx, pointer_type);
- let (pointer_size, pointer_align) = size_and_align_of(cx, pointer_llvm_type);
- let name = compute_debuginfo_type_name(cx, pointer_type, false);
- let name = CString::new(name).unwrap();
- let ptr_metadata = unsafe {
- llvm::LLVMDIBuilderCreatePointerType(
- DIB(cx),
- pointee_type_metadata,
- bytes_to_bits(pointer_size),
- bytes_to_bits(pointer_align),
- name.as_ptr())
- };
- return ptr_metadata;
-}
-
-//=-----------------------------------------------------------------------------
-// Common facilities for record-like types (structs, enums, tuples)
-//=-----------------------------------------------------------------------------
-
-enum MemberOffset {
- FixedMemberOffset { bytes: usize },
- // For ComputedMemberOffset, the offset is read from the llvm type definition
- ComputedMemberOffset
-}
-
-// Description of a type member, which can either be a regular field (as in
-// structs or tuples) or an enum variant
-struct MemberDescription {
- name: String,
- llvm_type: Type,
- type_metadata: DIType,
- offset: MemberOffset,
- flags: c_uint
-}
-
-// A factory for MemberDescriptions. It produces a list of member descriptions
-// for some record-like type. MemberDescriptionFactories are used to defer the
-// creation of type member descriptions in order to break cycles arising from
-// recursive type definitions.
-enum MemberDescriptionFactory<'tcx> {
- StructMDF(StructMemberDescriptionFactory<'tcx>),
- TupleMDF(TupleMemberDescriptionFactory<'tcx>),
- EnumMDF(EnumMemberDescriptionFactory<'tcx>),
- VariantMDF(VariantMemberDescriptionFactory<'tcx>)
-}
-
-impl<'tcx> MemberDescriptionFactory<'tcx> {
- fn create_member_descriptions<'a>(&self, cx: &CrateContext<'a, 'tcx>)
- -> Vec<MemberDescription> {
- match *self {
- StructMDF(ref this) => {
- this.create_member_descriptions(cx)
- }
- TupleMDF(ref this) => {
- this.create_member_descriptions(cx)
- }
- EnumMDF(ref this) => {
- this.create_member_descriptions(cx)
- }
- VariantMDF(ref this) => {
- this.create_member_descriptions(cx)
- }
- }
- }
-}
-
-// A description of some recursive type. It can either be already finished (as
-// with FinalMetadata) or it is not yet finished, but contains all information
-// needed to generate the missing parts of the description. See the documentation
-// section on Recursive Types at the top of this file for more information.
-enum RecursiveTypeDescription<'tcx> {
- UnfinishedMetadata {
- unfinished_type: Ty<'tcx>,
- unique_type_id: UniqueTypeId,
- metadata_stub: DICompositeType,
- llvm_type: Type,
- member_description_factory: MemberDescriptionFactory<'tcx>,
- },
- FinalMetadata(DICompositeType)
-}
-
-fn create_and_register_recursive_type_forward_declaration<'a, 'tcx>(
- cx: &CrateContext<'a, 'tcx>,
- unfinished_type: Ty<'tcx>,
- unique_type_id: UniqueTypeId,
- metadata_stub: DICompositeType,
- llvm_type: Type,
- member_description_factory: MemberDescriptionFactory<'tcx>)
- -> RecursiveTypeDescription<'tcx> {
-
- // Insert the stub into the TypeMap in order to allow for recursive references
- let mut type_map = debug_context(cx).type_map.borrow_mut();
- type_map.register_unique_id_with_metadata(cx, unique_type_id, metadata_stub);
- type_map.register_type_with_metadata(cx, unfinished_type, metadata_stub);
-
- UnfinishedMetadata {
- unfinished_type: unfinished_type,
- unique_type_id: unique_type_id,
- metadata_stub: metadata_stub,
- llvm_type: llvm_type,
- member_description_factory: member_description_factory,
- }
-}
-
-impl<'tcx> RecursiveTypeDescription<'tcx> {
- // Finishes up the description of the type in question (mostly by providing
- // descriptions of the fields of the given type) and returns the final type metadata.
- fn finalize<'a>(&self, cx: &CrateContext<'a, 'tcx>) -> MetadataCreationResult {
- match *self {
- FinalMetadata(metadata) => MetadataCreationResult::new(metadata, false),
- UnfinishedMetadata {
- unfinished_type,
- unique_type_id,
- metadata_stub,
- llvm_type,
- ref member_description_factory,
- ..
- } => {
- // Make sure that we have a forward declaration of the type in
- // the TypeMap so that recursive references are possible. This
- // will always be the case if the RecursiveTypeDescription has
- // been properly created through the
- // create_and_register_recursive_type_forward_declaration() function.
- {
- let type_map = debug_context(cx).type_map.borrow();
- if type_map.find_metadata_for_unique_id(unique_type_id).is_none() ||
- type_map.find_metadata_for_type(unfinished_type).is_none() {
- cx.sess().bug(&format!("Forward declaration of potentially recursive type \
- '{}' was not found in TypeMap!",
- ppaux::ty_to_string(cx.tcx(), unfinished_type))
- );
- }
- }
-
- // ... then create the member descriptions ...
- let member_descriptions =
- member_description_factory.create_member_descriptions(cx);
-
- // ... and attach them to the stub to complete it.
- set_members_of_composite_type(cx,
- metadata_stub,
- llvm_type,
- &member_descriptions[..]);
- return MetadataCreationResult::new(metadata_stub, true);
- }
- }
- }
-}
-
-
-//=-----------------------------------------------------------------------------
-// Structs
-//=-----------------------------------------------------------------------------
-
-// Creates MemberDescriptions for the fields of a struct
-struct StructMemberDescriptionFactory<'tcx> {
- fields: Vec<ty::field<'tcx>>,
- is_simd: bool,
- span: Span,
-}
-
-impl<'tcx> StructMemberDescriptionFactory<'tcx> {
- fn create_member_descriptions<'a>(&self, cx: &CrateContext<'a, 'tcx>)
- -> Vec<MemberDescription> {
- if self.fields.is_empty() {
- return Vec::new();
- }
-
- let field_size = if self.is_simd {
- machine::llsize_of_alloc(cx, type_of::type_of(cx, self.fields[0].mt.ty)) as usize
- } else {
- 0xdeadbeef
- };
-
- self.fields.iter().enumerate().map(|(i, field)| {
- let name = if field.name == special_idents::unnamed_field.name {
- format!("__{}", i)
- } else {
- token::get_name(field.name).to_string()
- };
-
- let offset = if self.is_simd {
- assert!(field_size != 0xdeadbeef);
- FixedMemberOffset { bytes: i * field_size }
- } else {
- ComputedMemberOffset
- };
-
- MemberDescription {
- name: name,
- llvm_type: type_of::type_of(cx, field.mt.ty),
- type_metadata: type_metadata(cx, field.mt.ty, self.span),
- offset: offset,
- flags: FLAGS_NONE,
- }
- }).collect()
- }
-}
-
-
-fn prepare_struct_metadata<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
- struct_type: Ty<'tcx>,
- def_id: ast::DefId,
- substs: &subst::Substs<'tcx>,
- unique_type_id: UniqueTypeId,
- span: Span)
- -> RecursiveTypeDescription<'tcx> {
- let struct_name = compute_debuginfo_type_name(cx, struct_type, false);
- let struct_llvm_type = type_of::type_of(cx, struct_type);
-
- let (containing_scope, _) = get_namespace_and_span_for_item(cx, def_id);
-
- let struct_metadata_stub = create_struct_stub(cx,
- struct_llvm_type,
- &struct_name[..],
- unique_type_id,
- containing_scope);
-
- let mut fields = ty::struct_fields(cx.tcx(), def_id, substs);
-
- // The `Ty` values returned by `ty::struct_fields` can still contain
- // `ty_projection` variants, so normalize those away.
- for field in &mut fields {
- field.mt.ty = monomorphize::normalize_associated_type(cx.tcx(), &field.mt.ty);
- }
-
- create_and_register_recursive_type_forward_declaration(
- cx,
- struct_type,
- unique_type_id,
- struct_metadata_stub,
- struct_llvm_type,
- StructMDF(StructMemberDescriptionFactory {
- fields: fields,
- is_simd: ty::type_is_simd(cx.tcx(), struct_type),
- span: span,
- })
- )
-}
-
-
-//=-----------------------------------------------------------------------------
-// Tuples
-//=-----------------------------------------------------------------------------
-
-// Creates MemberDescriptions for the fields of a tuple
-struct TupleMemberDescriptionFactory<'tcx> {
- component_types: Vec<Ty<'tcx>>,
- span: Span,
-}
-
-impl<'tcx> TupleMemberDescriptionFactory<'tcx> {
- fn create_member_descriptions<'a>(&self, cx: &CrateContext<'a, 'tcx>)
- -> Vec<MemberDescription> {
- self.component_types
- .iter()
- .enumerate()
- .map(|(i, &component_type)| {
- MemberDescription {
- name: format!("__{}", i),
- llvm_type: type_of::type_of(cx, component_type),
- type_metadata: type_metadata(cx, component_type, self.span),
- offset: ComputedMemberOffset,
- flags: FLAGS_NONE,
- }
- }).collect()
- }
-}
-
-fn prepare_tuple_metadata<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
- tuple_type: Ty<'tcx>,
- component_types: &[Ty<'tcx>],
- unique_type_id: UniqueTypeId,
- span: Span)
- -> RecursiveTypeDescription<'tcx> {
- let tuple_name = compute_debuginfo_type_name(cx, tuple_type, false);
- let tuple_llvm_type = type_of::type_of(cx, tuple_type);
-
- create_and_register_recursive_type_forward_declaration(
- cx,
- tuple_type,
- unique_type_id,
- create_struct_stub(cx,
- tuple_llvm_type,
- &tuple_name[..],
- unique_type_id,
- UNKNOWN_SCOPE_METADATA),
- tuple_llvm_type,
- TupleMDF(TupleMemberDescriptionFactory {
- component_types: component_types.to_vec(),
- span: span,
- })
- )
-}
-
-
-//=-----------------------------------------------------------------------------
-// Enums
-//=-----------------------------------------------------------------------------
-
-// Describes the members of an enum value: An enum is described as a union of
-// structs in DWARF. This MemberDescriptionFactory provides the description for
-// the members of this union; so for every variant of the given enum, this factory
-// will produce one MemberDescription (all with no name and a fixed offset of
-// zero bytes).
-struct EnumMemberDescriptionFactory<'tcx> {
- enum_type: Ty<'tcx>,
- type_rep: Rc<adt::Repr<'tcx>>,
- variants: Rc<Vec<Rc<ty::VariantInfo<'tcx>>>>,
- discriminant_type_metadata: Option<DIType>,
- containing_scope: DIScope,
- file_metadata: DIFile,
- span: Span,
-}
-
-impl<'tcx> EnumMemberDescriptionFactory<'tcx> {
- fn create_member_descriptions<'a>(&self, cx: &CrateContext<'a, 'tcx>)
- -> Vec<MemberDescription> {
- match *self.type_rep {
- adt::General(_, ref struct_defs, _) => {
- let discriminant_info = RegularDiscriminant(self.discriminant_type_metadata
- .expect(""));
-
- struct_defs
- .iter()
- .enumerate()
- .map(|(i, struct_def)| {
- let (variant_type_metadata,
- variant_llvm_type,
- member_desc_factory) =
- describe_enum_variant(cx,
- self.enum_type,
- struct_def,
- &*(*self.variants)[i],
- discriminant_info,
- self.containing_scope,
- self.span);
-
- let member_descriptions = member_desc_factory
- .create_member_descriptions(cx);
-
- set_members_of_composite_type(cx,
- variant_type_metadata,
- variant_llvm_type,
- &member_descriptions[..]);
- MemberDescription {
- name: "".to_string(),
- llvm_type: variant_llvm_type,
- type_metadata: variant_type_metadata,
- offset: FixedMemberOffset { bytes: 0 },
- flags: FLAGS_NONE
- }
- }).collect()
- },
- adt::Univariant(ref struct_def, _) => {
- assert!(self.variants.len() <= 1);
-
- if self.variants.is_empty() {
- vec![]
- } else {
- let (variant_type_metadata,
- variant_llvm_type,
- member_description_factory) =
- describe_enum_variant(cx,
- self.enum_type,
- struct_def,
- &*(*self.variants)[0],
- NoDiscriminant,
- self.containing_scope,
- self.span);
-
- let member_descriptions =
- member_description_factory.create_member_descriptions(cx);
-
- set_members_of_composite_type(cx,
- variant_type_metadata,
- variant_llvm_type,
- &member_descriptions[..]);
- vec![
- MemberDescription {
- name: "".to_string(),
- llvm_type: variant_llvm_type,
- type_metadata: variant_type_metadata,
- offset: FixedMemberOffset { bytes: 0 },
- flags: FLAGS_NONE
- }
- ]
- }
- }
- adt::RawNullablePointer { nndiscr: non_null_variant_index, nnty, .. } => {
- // As far as debuginfo is concerned, the pointer this enum
- // represents is still wrapped in a struct. This is to make the
- // DWARF representation of enums uniform.
-
- // First create a description of the artificial wrapper struct:
- let non_null_variant = &(*self.variants)[non_null_variant_index as usize];
- let non_null_variant_name = token::get_name(non_null_variant.name);
-
- // The llvm type and metadata of the pointer
- let non_null_llvm_type = type_of::type_of(cx, nnty);
- let non_null_type_metadata = type_metadata(cx, nnty, self.span);
-
- // The type of the artificial struct wrapping the pointer
- let artificial_struct_llvm_type = Type::struct_(cx,
- &[non_null_llvm_type],
- false);
-
- // For the metadata of the wrapper struct, we need to create a
- // MemberDescription of the struct's single field.
- let sole_struct_member_description = MemberDescription {
- name: match non_null_variant.arg_names {
- Some(ref names) => token::get_name(names[0]).to_string(),
- None => "__0".to_string()
- },
- llvm_type: non_null_llvm_type,
- type_metadata: non_null_type_metadata,
- offset: FixedMemberOffset { bytes: 0 },
- flags: FLAGS_NONE
- };
-
- let unique_type_id = debug_context(cx).type_map
- .borrow_mut()
- .get_unique_type_id_of_enum_variant(
- cx,
- self.enum_type,
- &non_null_variant_name);
-
- // Now we can create the metadata of the artificial struct
- let artificial_struct_metadata =
- composite_type_metadata(cx,
- artificial_struct_llvm_type,
- &non_null_variant_name,
- unique_type_id,
- &[sole_struct_member_description],
- self.containing_scope,
- self.file_metadata,
- codemap::DUMMY_SP);
-
- // Encode the information about the null variant in the union
- // member's name.
- let null_variant_index = (1 - non_null_variant_index) as usize;
- let null_variant_name = token::get_name((*self.variants)[null_variant_index].name);
- let union_member_name = format!("RUST$ENCODED$ENUM${}${}",
- 0,
- null_variant_name);
-
- // Finally create the (singleton) list of descriptions of union
- // members.
- vec![
- MemberDescription {
- name: union_member_name,
- llvm_type: artificial_struct_llvm_type,
- type_metadata: artificial_struct_metadata,
- offset: FixedMemberOffset { bytes: 0 },
- flags: FLAGS_NONE
- }
- ]
- },
- adt::StructWrappedNullablePointer { nonnull: ref struct_def,
- nndiscr,
- ref discrfield, ..} => {
- // Create a description of the non-null variant
- let (variant_type_metadata, variant_llvm_type, member_description_factory) =
- describe_enum_variant(cx,
- self.enum_type,
- struct_def,
- &*(*self.variants)[nndiscr as usize],
- OptimizedDiscriminant,
- self.containing_scope,
- self.span);
-
- let variant_member_descriptions =
- member_description_factory.create_member_descriptions(cx);
-
- set_members_of_composite_type(cx,
- variant_type_metadata,
- variant_llvm_type,
- &variant_member_descriptions[..]);
-
- // Encode the information about the null variant in the union
- // member's name.
- let null_variant_index = (1 - nndiscr) as usize;
- let null_variant_name = token::get_name((*self.variants)[null_variant_index].name);
- let discrfield = discrfield.iter()
- .skip(1)
- .map(|x| x.to_string())
- .collect::<Vec<_>>().connect("$");
- let union_member_name = format!("RUST$ENCODED$ENUM${}${}",
- discrfield,
- null_variant_name);
-
- // Create the (singleton) list of descriptions of union members.
- vec![
- MemberDescription {
- name: union_member_name,
- llvm_type: variant_llvm_type,
- type_metadata: variant_type_metadata,
- offset: FixedMemberOffset { bytes: 0 },
- flags: FLAGS_NONE
- }
- ]
- },
- adt::CEnum(..) => cx.sess().span_bug(self.span, "This should be unreachable.")
- }
- }
-}
-
-// Creates MemberDescriptions for the fields of a single enum variant.
-struct VariantMemberDescriptionFactory<'tcx> {
- args: Vec<(String, Ty<'tcx>)>,
- discriminant_type_metadata: Option<DIType>,
- span: Span,
-}
-
-impl<'tcx> VariantMemberDescriptionFactory<'tcx> {
- fn create_member_descriptions<'a>(&self, cx: &CrateContext<'a, 'tcx>)
- -> Vec<MemberDescription> {
- self.args.iter().enumerate().map(|(i, &(ref name, ty))| {
- MemberDescription {
- name: name.to_string(),
- llvm_type: type_of::type_of(cx, ty),
- type_metadata: match self.discriminant_type_metadata {
- Some(metadata) if i == 0 => metadata,
- _ => type_metadata(cx, ty, self.span)
- },
- offset: ComputedMemberOffset,
- flags: FLAGS_NONE
- }
- }).collect()
- }
-}
-
-#[derive(Copy, Clone)]
-enum EnumDiscriminantInfo {
- RegularDiscriminant(DIType),
- OptimizedDiscriminant,
- NoDiscriminant
-}
-
-// Returns a tuple of (1) type_metadata_stub of the variant, (2) the llvm_type
-// of the variant, and (3) a MemberDescriptionFactory for producing the
-// descriptions of the fields of the variant. This is a rudimentary version of a
-// full RecursiveTypeDescription.
-fn describe_enum_variant<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
- enum_type: Ty<'tcx>,
- struct_def: &adt::Struct<'tcx>,
- variant_info: &ty::VariantInfo<'tcx>,
- discriminant_info: EnumDiscriminantInfo,
- containing_scope: DIScope,
- span: Span)
- -> (DICompositeType, Type, MemberDescriptionFactory<'tcx>) {
- let variant_llvm_type =
- Type::struct_(cx, &struct_def.fields
- .iter()
- .map(|&t| type_of::type_of(cx, t))
- .collect::<Vec<_>>()
- ,
- struct_def.packed);
- // Could do some consistency checks here: size, align, field count, discr type
-
- let variant_name = token::get_name(variant_info.name);
- let variant_name = &variant_name;
- let unique_type_id = debug_context(cx).type_map
- .borrow_mut()
- .get_unique_type_id_of_enum_variant(
- cx,
- enum_type,
- variant_name);
-
- let metadata_stub = create_struct_stub(cx,
- variant_llvm_type,
- variant_name,
- unique_type_id,
- containing_scope);
-
- // Get the argument names from the enum variant info
- let mut arg_names: Vec<_> = match variant_info.arg_names {
- Some(ref names) => {
- names.iter()
- .map(|&name| token::get_name(name).to_string())
- .collect()
- }
- None => {
- variant_info.args
- .iter()
- .enumerate()
- .map(|(i, _)| format!("__{}", i))
- .collect()
- }
- };
-
- // If this is not a univariant enum, there is also the discriminant field.
- match discriminant_info {
- RegularDiscriminant(_) => arg_names.insert(0, "RUST$ENUM$DISR".to_string()),
- _ => { /* do nothing */ }
- };
-
- // Build an array of (field name, field type) pairs to be captured in the factory closure.
- let args: Vec<(String, Ty)> = arg_names.iter()
- .zip(struct_def.fields.iter())
- .map(|(s, &t)| (s.to_string(), t))
- .collect();
-
- let member_description_factory =
- VariantMDF(VariantMemberDescriptionFactory {
- args: args,
- discriminant_type_metadata: match discriminant_info {
- RegularDiscriminant(discriminant_type_metadata) => {
- Some(discriminant_type_metadata)
- }
- _ => None
- },
- span: span,
- });
-
- (metadata_stub, variant_llvm_type, member_description_factory)
-}
-
-fn prepare_enum_metadata<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
- enum_type: Ty<'tcx>,
- enum_def_id: ast::DefId,
- unique_type_id: UniqueTypeId,
- span: Span)
- -> RecursiveTypeDescription<'tcx> {
- let enum_name = compute_debuginfo_type_name(cx, enum_type, false);
-
- let (containing_scope, definition_span) = get_namespace_and_span_for_item(cx, enum_def_id);
- let loc = span_start(cx, definition_span);
- let file_metadata = file_metadata(cx, &loc.file.name);
-
- let variants = ty::enum_variants(cx.tcx(), enum_def_id);
-
- let enumerators_metadata: Vec<DIDescriptor> = variants
- .iter()
- .map(|v| {
- let token = token::get_name(v.name);
- let name = CString::new(token.as_bytes()).unwrap();
- unsafe {
- llvm::LLVMDIBuilderCreateEnumerator(
- DIB(cx),
- name.as_ptr(),
- v.disr_val as u64)
- }
- })
- .collect();
-
- let discriminant_type_metadata = |inttype| {
- // We can reuse the type of the discriminant for all monomorphized
- // instances of an enum because it doesn't depend on any type parameters.
- // The def_id, uniquely identifying the enum's polytype acts as key in
- // this cache.
- let cached_discriminant_type_metadata = debug_context(cx).created_enum_disr_types
- .borrow()
- .get(&enum_def_id).cloned();
- match cached_discriminant_type_metadata {
- Some(discriminant_type_metadata) => discriminant_type_metadata,
- None => {
- let discriminant_llvm_type = adt::ll_inttype(cx, inttype);
- let (discriminant_size, discriminant_align) =
- size_and_align_of(cx, discriminant_llvm_type);
- let discriminant_base_type_metadata =
- type_metadata(cx,
- adt::ty_of_inttype(cx.tcx(), inttype),
- codemap::DUMMY_SP);
- let discriminant_name = get_enum_discriminant_name(cx, enum_def_id);
-
- let name = CString::new(discriminant_name.as_bytes()).unwrap();
- let discriminant_type_metadata = unsafe {
- llvm::LLVMDIBuilderCreateEnumerationType(
- DIB(cx),
- containing_scope,
- name.as_ptr(),
- UNKNOWN_FILE_METADATA,
- UNKNOWN_LINE_NUMBER,
- bytes_to_bits(discriminant_size),
- bytes_to_bits(discriminant_align),
- create_DIArray(DIB(cx), &enumerators_metadata),
- discriminant_base_type_metadata)
- };
-
- debug_context(cx).created_enum_disr_types
- .borrow_mut()
- .insert(enum_def_id, discriminant_type_metadata);
-
- discriminant_type_metadata
- }
- }
- };
-
- let type_rep = adt::represent_type(cx, enum_type);
-
- let discriminant_type_metadata = match *type_rep {
- adt::CEnum(inttype, _, _) => {
- return FinalMetadata(discriminant_type_metadata(inttype))
- },
- adt::RawNullablePointer { .. } |
- adt::StructWrappedNullablePointer { .. } |
- adt::Univariant(..) => None,
- adt::General(inttype, _, _) => Some(discriminant_type_metadata(inttype)),
- };
-
- let enum_llvm_type = type_of::type_of(cx, enum_type);
- let (enum_type_size, enum_type_align) = size_and_align_of(cx, enum_llvm_type);
-
- let unique_type_id_str = debug_context(cx)
- .type_map
- .borrow()
- .get_unique_type_id_as_string(unique_type_id);
-
- let enum_name = CString::new(enum_name).unwrap();
- let unique_type_id_str = CString::new(unique_type_id_str.as_bytes()).unwrap();
- let enum_metadata = unsafe {
- llvm::LLVMDIBuilderCreateUnionType(
- DIB(cx),
- containing_scope,
- enum_name.as_ptr(),
- UNKNOWN_FILE_METADATA,
- UNKNOWN_LINE_NUMBER,
- bytes_to_bits(enum_type_size),
- bytes_to_bits(enum_type_align),
- 0, // Flags
- ptr::null_mut(),
- 0, // RuntimeLang
- unique_type_id_str.as_ptr())
- };
-
- return create_and_register_recursive_type_forward_declaration(
- cx,
- enum_type,
- unique_type_id,
- enum_metadata,
- enum_llvm_type,
- EnumMDF(EnumMemberDescriptionFactory {
- enum_type: enum_type,
- type_rep: type_rep.clone(),
- variants: variants,
- discriminant_type_metadata: discriminant_type_metadata,
- containing_scope: containing_scope,
- file_metadata: file_metadata,
- span: span,
- }),
- );
-
- fn get_enum_discriminant_name(cx: &CrateContext,
- def_id: ast::DefId)
- -> token::InternedString {
- let name = if def_id.krate == ast::LOCAL_CRATE {
- cx.tcx().map.get_path_elem(def_id.node).name()
- } else {
- csearch::get_item_path(cx.tcx(), def_id).last().unwrap().name()
- };
-
- token::get_name(name)
- }
-}
-
-/// Creates debug information for a composite type, that is, anything that
-/// results in a LLVM struct.
-///
-/// Examples of Rust types to use this are: structs, tuples, boxes, vecs, and enums.
-fn composite_type_metadata(cx: &CrateContext,
- composite_llvm_type: Type,
- composite_type_name: &str,
- composite_type_unique_id: UniqueTypeId,
- member_descriptions: &[MemberDescription],
- containing_scope: DIScope,
-
- // Ignore source location information as long as it
- // can't be reconstructed for non-local crates.
- _file_metadata: DIFile,
- _definition_span: Span)
- -> DICompositeType {
- // Create the (empty) struct metadata node ...
- let composite_type_metadata = create_struct_stub(cx,
- composite_llvm_type,
- composite_type_name,
- composite_type_unique_id,
- containing_scope);
- // ... and immediately create and add the member descriptions.
- set_members_of_composite_type(cx,
- composite_type_metadata,
- composite_llvm_type,
- member_descriptions);
-
- return composite_type_metadata;
-}
-
-fn set_members_of_composite_type(cx: &CrateContext,
- composite_type_metadata: DICompositeType,
- composite_llvm_type: Type,
- member_descriptions: &[MemberDescription]) {
- // In some rare cases LLVM metadata uniquing would lead to an existing type
- // description being used instead of a new one created in create_struct_stub.
- // This would cause a hard to trace assertion in DICompositeType::SetTypeArray().
- // The following check makes sure that we get a better error message if this
- // should happen again due to some regression.
- {
- let mut composite_types_completed =
- debug_context(cx).composite_types_completed.borrow_mut();
- if composite_types_completed.contains(&composite_type_metadata) {
- cx.sess().bug("debuginfo::set_members_of_composite_type() - \
- Already completed forward declaration re-encountered.");
- } else {
- composite_types_completed.insert(composite_type_metadata);
- }
- }
-
- let member_metadata: Vec<DIDescriptor> = member_descriptions
- .iter()
- .enumerate()
- .map(|(i, member_description)| {
- let (member_size, member_align) = size_and_align_of(cx, member_description.llvm_type);
- let member_offset = match member_description.offset {
- FixedMemberOffset { bytes } => bytes as u64,
- ComputedMemberOffset => machine::llelement_offset(cx, composite_llvm_type, i)
- };
-
- let member_name = member_description.name.as_bytes();
- let member_name = CString::new(member_name).unwrap();
- unsafe {
- llvm::LLVMDIBuilderCreateMemberType(
- DIB(cx),
- composite_type_metadata,
- member_name.as_ptr(),
- UNKNOWN_FILE_METADATA,
- UNKNOWN_LINE_NUMBER,
- bytes_to_bits(member_size),
- bytes_to_bits(member_align),
- bytes_to_bits(member_offset),
- member_description.flags,
- member_description.type_metadata)
- }
- })
- .collect();
-
- unsafe {
- let type_array = create_DIArray(DIB(cx), &member_metadata[..]);
- llvm::LLVMDICompositeTypeSetTypeArray(DIB(cx), composite_type_metadata, type_array);
- }
-}
-
-// A convenience wrapper around LLVMDIBuilderCreateStructType(). Does not do any
-// caching, does not add any fields to the struct. This can be done later with
-// set_members_of_composite_type().
-fn create_struct_stub(cx: &CrateContext,
- struct_llvm_type: Type,
- struct_type_name: &str,
- unique_type_id: UniqueTypeId,
- containing_scope: DIScope)
- -> DICompositeType {
- let (struct_size, struct_align) = size_and_align_of(cx, struct_llvm_type);
-
- let unique_type_id_str = debug_context(cx).type_map
- .borrow()
- .get_unique_type_id_as_string(unique_type_id);
- let name = CString::new(struct_type_name).unwrap();
- let unique_type_id = CString::new(unique_type_id_str.as_bytes()).unwrap();
- let metadata_stub = unsafe {
- // LLVMDIBuilderCreateStructType() wants an empty array. A null
- // pointer will lead to hard to trace and debug LLVM assertions
- // later on in llvm/lib/IR/Value.cpp.
- let empty_array = create_DIArray(DIB(cx), &[]);
-
- llvm::LLVMDIBuilderCreateStructType(
- DIB(cx),
- containing_scope,
- name.as_ptr(),
- UNKNOWN_FILE_METADATA,
- UNKNOWN_LINE_NUMBER,
- bytes_to_bits(struct_size),
- bytes_to_bits(struct_align),
- 0,
- ptr::null_mut(),
- empty_array,
- 0,
- ptr::null_mut(),
- unique_type_id.as_ptr())
- };
-
- return metadata_stub;
-}
-
-fn fixed_vec_metadata<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
- unique_type_id: UniqueTypeId,
- element_type: Ty<'tcx>,
- len: Option<u64>,
- span: Span)
- -> MetadataCreationResult {
- let element_type_metadata = type_metadata(cx, element_type, span);
-
- return_if_metadata_created_in_meantime!(cx, unique_type_id);
-
- let element_llvm_type = type_of::type_of(cx, element_type);
- let (element_type_size, element_type_align) = size_and_align_of(cx, element_llvm_type);
-
- let (array_size_in_bytes, upper_bound) = match len {
- Some(len) => (element_type_size * len, len as c_longlong),
- None => (0, -1)
- };
-
- let subrange = unsafe {
- llvm::LLVMDIBuilderGetOrCreateSubrange(DIB(cx), 0, upper_bound)
- };
-
- let subscripts = create_DIArray(DIB(cx), &[subrange]);
- let metadata = unsafe {
- llvm::LLVMDIBuilderCreateArrayType(
- DIB(cx),
- bytes_to_bits(array_size_in_bytes),
- bytes_to_bits(element_type_align),
- element_type_metadata,
- subscripts)
- };
-
- return MetadataCreationResult::new(metadata, false);
-}
-
-fn vec_slice_metadata<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
- vec_type: Ty<'tcx>,
- element_type: Ty<'tcx>,
- unique_type_id: UniqueTypeId,
- span: Span)
- -> MetadataCreationResult {
- let data_ptr_type = ty::mk_ptr(cx.tcx(), ty::mt {
- ty: element_type,
- mutbl: ast::MutImmutable
- });
-
- let element_type_metadata = type_metadata(cx, data_ptr_type, span);
-
- return_if_metadata_created_in_meantime!(cx, unique_type_id);
-
- let slice_llvm_type = type_of::type_of(cx, vec_type);
- let slice_type_name = compute_debuginfo_type_name(cx, vec_type, true);
-
- let member_llvm_types = slice_llvm_type.field_types();
- assert!(slice_layout_is_correct(cx,
- &member_llvm_types[..],
- element_type));
- let member_descriptions = [
- MemberDescription {
- name: "data_ptr".to_string(),
- llvm_type: member_llvm_types[0],
- type_metadata: element_type_metadata,
- offset: ComputedMemberOffset,
- flags: FLAGS_NONE
- },
- MemberDescription {
- name: "length".to_string(),
- llvm_type: member_llvm_types[1],
- type_metadata: type_metadata(cx, cx.tcx().types.usize, span),
- offset: ComputedMemberOffset,
- flags: FLAGS_NONE
- },
- ];
-
- assert!(member_descriptions.len() == member_llvm_types.len());
-
- let loc = span_start(cx, span);
- let file_metadata = file_metadata(cx, &loc.file.name);
-
- let metadata = composite_type_metadata(cx,
- slice_llvm_type,
- &slice_type_name[..],
- unique_type_id,
- &member_descriptions,
- UNKNOWN_SCOPE_METADATA,
- file_metadata,
- span);
- return MetadataCreationResult::new(metadata, false);
-
- fn slice_layout_is_correct<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
- member_llvm_types: &[Type],
- element_type: Ty<'tcx>)
- -> bool {
- member_llvm_types.len() == 2 &&
- member_llvm_types[0] == type_of::type_of(cx, element_type).ptr_to() &&
- member_llvm_types[1] == cx.int_type()
- }
-}
-
-fn subroutine_type_metadata<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
- unique_type_id: UniqueTypeId,
- signature: &ty::PolyFnSig<'tcx>,
- span: Span)
- -> MetadataCreationResult
-{
- let signature = ty::erase_late_bound_regions(cx.tcx(), signature);
-
- let mut signature_metadata: Vec<DIType> = Vec::with_capacity(signature.inputs.len() + 1);
-
- // return type
- signature_metadata.push(match signature.output {
- ty::FnConverging(ret_ty) => match ret_ty.sty {
- ty::ty_tup(ref tys) if tys.is_empty() => ptr::null_mut(),
- _ => type_metadata(cx, ret_ty, span)
- },
- ty::FnDiverging => diverging_type_metadata(cx)
- });
-
- // regular arguments
- for &argument_type in &signature.inputs {
- signature_metadata.push(type_metadata(cx, argument_type, span));
- }
-
- return_if_metadata_created_in_meantime!(cx, unique_type_id);
-
- return MetadataCreationResult::new(
- unsafe {
- llvm::LLVMDIBuilderCreateSubroutineType(
- DIB(cx),
- UNKNOWN_FILE_METADATA,
- create_DIArray(DIB(cx), &signature_metadata[..]))
- },
- false);
-}
-
-// FIXME(1563) This is all a bit of a hack because 'trait pointer' is an ill-
-// defined concept. For the case of an actual trait pointer (i.e., Box<Trait>,
-// &Trait), trait_object_type should be the whole thing (e.g, Box<Trait>) and
-// trait_type should be the actual trait (e.g., Trait). Where the trait is part
-// of a DST struct, there is no trait_object_type and the results of this
-// function will be a little bit weird.
-fn trait_pointer_metadata<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
- trait_type: Ty<'tcx>,
- trait_object_type: Option<Ty<'tcx>>,
- unique_type_id: UniqueTypeId)
- -> DIType {
- // The implementation provided here is a stub. It makes sure that the trait
- // type is assigned the correct name, size, namespace, and source location.
- // But it does not describe the trait's methods.
-
- let def_id = match trait_type.sty {
- ty::ty_trait(ref data) => data.principal_def_id(),
- _ => {
- let pp_type_name = ppaux::ty_to_string(cx.tcx(), trait_type);
- cx.sess().bug(&format!("debuginfo: Unexpected trait-object type in \
- trait_pointer_metadata(): {}",
- &pp_type_name[..]));
- }
- };
-
- let trait_object_type = trait_object_type.unwrap_or(trait_type);
- let trait_type_name =
- compute_debuginfo_type_name(cx, trait_object_type, false);
-
- let (containing_scope, _) = get_namespace_and_span_for_item(cx, def_id);
-
- let trait_llvm_type = type_of::type_of(cx, trait_object_type);
-
- composite_type_metadata(cx,
- trait_llvm_type,
- &trait_type_name[..],
- unique_type_id,
- &[],
- containing_scope,
- UNKNOWN_FILE_METADATA,
- codemap::DUMMY_SP)
-}
-
-fn type_metadata<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
- t: Ty<'tcx>,
- usage_site_span: Span)
- -> DIType {
- // Get the unique type id of this type.
- let unique_type_id = {
- let mut type_map = debug_context(cx).type_map.borrow_mut();
- // First, try to find the type in TypeMap. If we have seen it before, we
- // can exit early here.
- match type_map.find_metadata_for_type(t) {
- Some(metadata) => {
- return metadata;
- },
- None => {
- // The Ty is not in the TypeMap but maybe we have already seen
- // an equivalent type (e.g. only differing in region arguments).
- // In order to find out, generate the unique type id and look
- // that up.
- let unique_type_id = type_map.get_unique_type_id_of_type(cx, t);
- match type_map.find_metadata_for_unique_id(unique_type_id) {
- Some(metadata) => {
- // There is already an equivalent type in the TypeMap.
- // Register this Ty as an alias in the cache and
- // return the cached metadata.
- type_map.register_type_with_metadata(cx, t, metadata);
- return metadata;
- },
- None => {
- // There really is no type metadata for this type, so
- // proceed by creating it.
- unique_type_id
- }
- }
- }
- }
- };
-
- debug!("type_metadata: {:?}", t);
-
- let sty = &t.sty;
- let MetadataCreationResult { metadata, already_stored_in_typemap } = match *sty {
- ty::ty_bool |
- ty::ty_char |
- ty::ty_int(_) |
- ty::ty_uint(_) |
- ty::ty_float(_) => {
- MetadataCreationResult::new(basic_type_metadata(cx, t), false)
- }
- ty::ty_tup(ref elements) if elements.is_empty() => {
- MetadataCreationResult::new(basic_type_metadata(cx, t), false)
- }
- ty::ty_enum(def_id, _) => {
- prepare_enum_metadata(cx, t, def_id, unique_type_id, usage_site_span).finalize(cx)
- }
- ty::ty_vec(typ, len) => {
- fixed_vec_metadata(cx, unique_type_id, typ, len.map(|x| x as u64), usage_site_span)
- }
- ty::ty_str => {
- fixed_vec_metadata(cx, unique_type_id, cx.tcx().types.i8, None, usage_site_span)
- }
- ty::ty_trait(..) => {
- MetadataCreationResult::new(
- trait_pointer_metadata(cx, t, None, unique_type_id),
- false)
- }
- ty::ty_uniq(ty) | ty::ty_ptr(ty::mt{ty, ..}) | ty::ty_rptr(_, ty::mt{ty, ..}) => {
- match ty.sty {
- ty::ty_vec(typ, None) => {
- vec_slice_metadata(cx, t, typ, unique_type_id, usage_site_span)
- }
- ty::ty_str => {
- vec_slice_metadata(cx, t, cx.tcx().types.u8, unique_type_id, usage_site_span)
- }
- ty::ty_trait(..) => {
- MetadataCreationResult::new(
- trait_pointer_metadata(cx, ty, Some(t), unique_type_id),
- false)
- }
- _ => {
- let pointee_metadata = type_metadata(cx, ty, usage_site_span);
-
- match debug_context(cx).type_map
- .borrow()
- .find_metadata_for_unique_id(unique_type_id) {
- Some(metadata) => return metadata,
- None => { /* proceed normally */ }
- };
-
- MetadataCreationResult::new(pointer_type_metadata(cx, t, pointee_metadata),
- false)
- }
- }
- }
- ty::ty_bare_fn(_, ref barefnty) => {
- subroutine_type_metadata(cx, unique_type_id, &barefnty.sig, usage_site_span)
- }
- ty::ty_closure(def_id, substs) => {
- let typer = NormalizingClosureTyper::new(cx.tcx());
- let sig = typer.closure_type(def_id, substs).sig;
- subroutine_type_metadata(cx, unique_type_id, &sig, usage_site_span)
- }
- ty::ty_struct(def_id, substs) => {
- prepare_struct_metadata(cx,
- t,
- def_id,
- substs,
- unique_type_id,
- usage_site_span).finalize(cx)
- }
- ty::ty_tup(ref elements) => {
- prepare_tuple_metadata(cx,
- t,
- &elements[..],
- unique_type_id,
- usage_site_span).finalize(cx)
- }
- _ => {
- cx.sess().bug(&format!("debuginfo: unexpected type in type_metadata: {:?}",
- sty))
- }
- };
-
- {
- let mut type_map = debug_context(cx).type_map.borrow_mut();
-
- if already_stored_in_typemap {
- // Also make sure that we already have a TypeMap entry entry for the unique type id.
- let metadata_for_uid = match type_map.find_metadata_for_unique_id(unique_type_id) {
- Some(metadata) => metadata,
- None => {
- let unique_type_id_str =
- type_map.get_unique_type_id_as_string(unique_type_id);
- let error_message = format!("Expected type metadata for unique \
- type id '{}' to already be in \
- the debuginfo::TypeMap but it \
- was not. (Ty = {})",
- &unique_type_id_str[..],
- ppaux::ty_to_string(cx.tcx(), t));
- cx.sess().span_bug(usage_site_span, &error_message[..]);
- }
- };
-
- match type_map.find_metadata_for_type(t) {
- Some(metadata) => {
- if metadata != metadata_for_uid {
- let unique_type_id_str =
- type_map.get_unique_type_id_as_string(unique_type_id);
- let error_message = format!("Mismatch between Ty and \
- UniqueTypeId maps in \
- debuginfo::TypeMap. \
- UniqueTypeId={}, Ty={}",
- &unique_type_id_str[..],
- ppaux::ty_to_string(cx.tcx(), t));
- cx.sess().span_bug(usage_site_span, &error_message[..]);
- }
- }
- None => {
- type_map.register_type_with_metadata(cx, t, metadata);
- }
- }
- } else {
- type_map.register_type_with_metadata(cx, t, metadata);
- type_map.register_unique_id_with_metadata(cx, unique_type_id, metadata);
- }
- }
-
- metadata
-}
-
-struct MetadataCreationResult {
- metadata: DIType,
- already_stored_in_typemap: bool
-}
-
-impl MetadataCreationResult {
- fn new(metadata: DIType, already_stored_in_typemap: bool) -> MetadataCreationResult {
- MetadataCreationResult {
- metadata: metadata,
- already_stored_in_typemap: already_stored_in_typemap
- }
- }
-}
-
-#[derive(Copy, Clone, PartialEq)]
-enum InternalDebugLocation {
- KnownLocation { scope: DIScope, line: usize, col: usize },
- UnknownLocation
-}
-
-impl InternalDebugLocation {
- fn new(scope: DIScope, line: usize, col: usize) -> InternalDebugLocation {
- KnownLocation {
- scope: scope,
- line: line,
- col: col,
- }
- }
-}
-
-fn set_debug_location(cx: &CrateContext, debug_location: InternalDebugLocation) {
- if debug_location == debug_context(cx).current_debug_location.get() {
- return;
- }
-
- let metadata_node;
-
- match debug_location {
- KnownLocation { scope, line, .. } => {
- // Always set the column to zero like Clang and GCC
- let col = UNKNOWN_COLUMN_NUMBER;
- debug!("setting debug location to {} {}", line, col);
-
- unsafe {
- metadata_node = llvm::LLVMDIBuilderCreateDebugLocation(
- debug_context(cx).llcontext,
- line as c_uint,
- col as c_uint,
- scope,
- ptr::null_mut());
- }
- }
- UnknownLocation => {
- debug!("clearing debug location ");
- metadata_node = ptr::null_mut();
- }
- };
-
- unsafe {
- llvm::LLVMSetCurrentDebugLocation(cx.raw_builder(), metadata_node);
- }
-
- debug_context(cx).current_debug_location.set(debug_location);
-}
-
-//=-----------------------------------------------------------------------------
-// Utility Functions
-//=-----------------------------------------------------------------------------
-
-fn contains_nodebug_attribute(attributes: &[ast::Attribute]) -> bool {
- attributes.iter().any(|attr| {
- let meta_item: &ast::MetaItem = &*attr.node.value;
- match meta_item.node {
- ast::MetaWord(ref value) => &value[..] == "no_debug",
- _ => false
- }
- })
-}
-
-/// Return codemap::Loc corresponding to the beginning of the span
-fn span_start(cx: &CrateContext, span: Span) -> codemap::Loc {
- cx.sess().codemap().lookup_char_pos(span.lo)
-}
-
-fn size_and_align_of(cx: &CrateContext, llvm_type: Type) -> (u64, u64) {
- (machine::llsize_of_alloc(cx, llvm_type), machine::llalign_of_min(cx, llvm_type) as u64)
-}
-
-fn bytes_to_bits(bytes: u64) -> u64 {
- bytes * 8
-}
-
-#[inline]
-fn debug_context<'a, 'tcx>(cx: &'a CrateContext<'a, 'tcx>)
- -> &'a CrateDebugContext<'tcx> {
- let debug_context: &'a CrateDebugContext<'tcx> = cx.dbg_cx().as_ref().unwrap();
- debug_context
-}
-
-#[inline]
-#[allow(non_snake_case)]
-fn DIB(cx: &CrateContext) -> DIBuilderRef {
- cx.dbg_cx().as_ref().unwrap().builder
-}
-
-fn fn_should_be_ignored(fcx: &FunctionContext) -> bool {
- match fcx.debug_context {
- FunctionDebugContext::RegularContext(_) => false,
- _ => true
- }
-}
-
-fn assert_type_for_node_id(cx: &CrateContext,
- node_id: ast::NodeId,
- error_reporting_span: Span) {
- if !cx.tcx().node_types().contains_key(&node_id) {
- cx.sess().span_bug(error_reporting_span,
- "debuginfo: Could not find type for node id!");
- }
-}
-
-fn get_namespace_and_span_for_item(cx: &CrateContext, def_id: ast::DefId)
- -> (DIScope, Span) {
- let containing_scope = namespace_for_item(cx, def_id).scope;
- let definition_span = if def_id.krate == ast::LOCAL_CRATE {
- cx.tcx().map.span(def_id.node)
- } else {
- // For external items there is no span information
- codemap::DUMMY_SP
- };
-
- (containing_scope, definition_span)
-}
-
-// This procedure builds the *scope map* for a given function, which maps any
-// given ast::NodeId in the function's AST to the correct DIScope metadata instance.
-//
-// This builder procedure walks the AST in execution order and keeps track of
-// what belongs to which scope, creating DIScope DIEs along the way, and
-// introducing *artificial* lexical scope descriptors where necessary. These
-// artificial scopes allow GDB to correctly handle name shadowing.
-fn create_scope_map(cx: &CrateContext,
- args: &[ast::Arg],
- fn_entry_block: &ast::Block,
- fn_metadata: DISubprogram,
- fn_ast_id: ast::NodeId)
- -> NodeMap<DIScope> {
- let mut scope_map = NodeMap();
-
- let def_map = &cx.tcx().def_map;
-
- struct ScopeStackEntry {
- scope_metadata: DIScope,
- name: Option<ast::Name>
- }
-
- let mut scope_stack = vec!(ScopeStackEntry { scope_metadata: fn_metadata, name: None });
- scope_map.insert(fn_ast_id, fn_metadata);
-
- // Push argument identifiers onto the stack so arguments integrate nicely
- // with variable shadowing.
- for arg in args {
- pat_util::pat_bindings(def_map, &*arg.pat, |_, node_id, _, path1| {
- scope_stack.push(ScopeStackEntry { scope_metadata: fn_metadata,
- name: Some(path1.node.name) });
- scope_map.insert(node_id, fn_metadata);
- })
- }
-
- // Clang creates a separate scope for function bodies, so let's do this too.
- with_new_scope(cx,
- fn_entry_block.span,
- &mut scope_stack,
- &mut scope_map,
- |cx, scope_stack, scope_map| {
- walk_block(cx, fn_entry_block, scope_stack, scope_map);
- });
-
- return scope_map;
-
-
- // local helper functions for walking the AST.
- fn with_new_scope<F>(cx: &CrateContext,
- scope_span: Span,
- scope_stack: &mut Vec<ScopeStackEntry> ,
- scope_map: &mut NodeMap<DIScope>,
- inner_walk: F) where
- F: FnOnce(&CrateContext, &mut Vec<ScopeStackEntry>, &mut NodeMap<DIScope>),
- {
- // Create a new lexical scope and push it onto the stack
- let loc = cx.sess().codemap().lookup_char_pos(scope_span.lo);
- let file_metadata = file_metadata(cx, &loc.file.name);
- let parent_scope = scope_stack.last().unwrap().scope_metadata;
-
- let scope_metadata = unsafe {
- llvm::LLVMDIBuilderCreateLexicalBlock(
- DIB(cx),
- parent_scope,
- file_metadata,
- loc.line as c_uint,
- loc.col.to_usize() as c_uint)
- };
-
- scope_stack.push(ScopeStackEntry { scope_metadata: scope_metadata, name: None });
-
- inner_walk(cx, scope_stack, scope_map);
-
- // pop artificial scopes
- while scope_stack.last().unwrap().name.is_some() {
- scope_stack.pop();
- }
-
- if scope_stack.last().unwrap().scope_metadata != scope_metadata {
- cx.sess().span_bug(scope_span, "debuginfo: Inconsistency in scope management.");
- }
-
- scope_stack.pop();
- }
-
- fn walk_block(cx: &CrateContext,
- block: &ast::Block,
- scope_stack: &mut Vec<ScopeStackEntry> ,
- scope_map: &mut NodeMap<DIScope>) {
- scope_map.insert(block.id, scope_stack.last().unwrap().scope_metadata);
-
- // The interesting things here are statements and the concluding expression.
- for statement in &block.stmts {
- scope_map.insert(ast_util::stmt_id(&**statement),
- scope_stack.last().unwrap().scope_metadata);
-
- match statement.node {
- ast::StmtDecl(ref decl, _) =>
- walk_decl(cx, &**decl, scope_stack, scope_map),
- ast::StmtExpr(ref exp, _) |
- ast::StmtSemi(ref exp, _) =>
- walk_expr(cx, &**exp, scope_stack, scope_map),
- ast::StmtMac(..) => () // Ignore macros (which should be expanded anyway).
- }
- }
-
- if let Some(ref exp) = block.expr {
- walk_expr(cx, &**exp, scope_stack, scope_map);
- }
- }
-
- fn walk_decl(cx: &CrateContext,
- decl: &ast::Decl,
- scope_stack: &mut Vec<ScopeStackEntry> ,
- scope_map: &mut NodeMap<DIScope>) {
- match *decl {
- codemap::Spanned { node: ast::DeclLocal(ref local), .. } => {
- scope_map.insert(local.id, scope_stack.last().unwrap().scope_metadata);
-
- walk_pattern(cx, &*local.pat, scope_stack, scope_map);
-
- if let Some(ref exp) = local.init {
- walk_expr(cx, &**exp, scope_stack, scope_map);
- }
- }
- _ => ()
- }
- }
-
- fn walk_pattern(cx: &CrateContext,
- pat: &ast::Pat,
- scope_stack: &mut Vec<ScopeStackEntry> ,
- scope_map: &mut NodeMap<DIScope>) {
-
- let def_map = &cx.tcx().def_map;
-
- // Unfortunately, we cannot just use pat_util::pat_bindings() or
- // ast_util::walk_pat() here because we have to visit *all* nodes in
- // order to put them into the scope map. The above functions don't do that.
- match pat.node {
- ast::PatIdent(_, ref path1, ref sub_pat_opt) => {
-
- // Check if this is a binding. If so we need to put it on the
- // scope stack and maybe introduce an artificial scope
- if pat_util::pat_is_binding(def_map, &*pat) {
-
- let name = path1.node.name;
-
- // LLVM does not properly generate 'DW_AT_start_scope' fields
- // for variable DIEs. For this reason we have to introduce
- // an artificial scope at bindings whenever a variable with
- // the same name is declared in *any* parent scope.
- //
- // Otherwise the following error occurs:
- //
- // let x = 10;
- //
- // do_something(); // 'gdb print x' correctly prints 10
- //
- // {
- // do_something(); // 'gdb print x' prints 0, because it
- // // already reads the uninitialized 'x'
- // // from the next line...
- // let x = 100;
- // do_something(); // 'gdb print x' correctly prints 100
- // }
-
- // Is there already a binding with that name?
- // N.B.: this comparison must be UNhygienic... because
- // gdb knows nothing about the context, so any two
- // variables with the same name will cause the problem.
- let need_new_scope = scope_stack
- .iter()
- .any(|entry| entry.name == Some(name));
-
- if need_new_scope {
- // Create a new lexical scope and push it onto the stack
- let loc = cx.sess().codemap().lookup_char_pos(pat.span.lo);
- let file_metadata = file_metadata(cx, &loc.file.name);
- let parent_scope = scope_stack.last().unwrap().scope_metadata;
-
- let scope_metadata = unsafe {
- llvm::LLVMDIBuilderCreateLexicalBlock(
- DIB(cx),
- parent_scope,
- file_metadata,
- loc.line as c_uint,
- loc.col.to_usize() as c_uint)
- };
-
- scope_stack.push(ScopeStackEntry {
- scope_metadata: scope_metadata,
- name: Some(name)
- });
-
- } else {
- // Push a new entry anyway so the name can be found
- let prev_metadata = scope_stack.last().unwrap().scope_metadata;
- scope_stack.push(ScopeStackEntry {
- scope_metadata: prev_metadata,
- name: Some(name)
- });
- }
- }
-
- scope_map.insert(pat.id, scope_stack.last().unwrap().scope_metadata);
-
- if let Some(ref sub_pat) = *sub_pat_opt {
- walk_pattern(cx, &**sub_pat, scope_stack, scope_map);
- }
- }
-
- ast::PatWild(_) => {
- scope_map.insert(pat.id, scope_stack.last().unwrap().scope_metadata);
- }
-
- ast::PatEnum(_, ref sub_pats_opt) => {
- scope_map.insert(pat.id, scope_stack.last().unwrap().scope_metadata);
-
- if let Some(ref sub_pats) = *sub_pats_opt {
- for p in sub_pats {
- walk_pattern(cx, &**p, scope_stack, scope_map);
- }
- }
- }
-
- ast::PatQPath(..) => {
- scope_map.insert(pat.id, scope_stack.last().unwrap().scope_metadata);
- }
-
- ast::PatStruct(_, ref field_pats, _) => {
- scope_map.insert(pat.id, scope_stack.last().unwrap().scope_metadata);
-
- for &codemap::Spanned {
- node: ast::FieldPat { pat: ref sub_pat, .. },
- ..
- } in field_pats.iter() {
- walk_pattern(cx, &**sub_pat, scope_stack, scope_map);
- }
- }
-
- ast::PatTup(ref sub_pats) => {
- scope_map.insert(pat.id, scope_stack.last().unwrap().scope_metadata);
-
- for sub_pat in sub_pats {
- walk_pattern(cx, &**sub_pat, scope_stack, scope_map);
- }
- }
-
- ast::PatBox(ref sub_pat) | ast::PatRegion(ref sub_pat, _) => {
- scope_map.insert(pat.id, scope_stack.last().unwrap().scope_metadata);
- walk_pattern(cx, &**sub_pat, scope_stack, scope_map);
- }
-
- ast::PatLit(ref exp) => {
- scope_map.insert(pat.id, scope_stack.last().unwrap().scope_metadata);
- walk_expr(cx, &**exp, scope_stack, scope_map);
- }
-
- ast::PatRange(ref exp1, ref exp2) => {
- scope_map.insert(pat.id, scope_stack.last().unwrap().scope_metadata);
- walk_expr(cx, &**exp1, scope_stack, scope_map);
- walk_expr(cx, &**exp2, scope_stack, scope_map);
- }
-
- ast::PatVec(ref front_sub_pats, ref middle_sub_pats, ref back_sub_pats) => {
- scope_map.insert(pat.id, scope_stack.last().unwrap().scope_metadata);
-
- for sub_pat in front_sub_pats {
- walk_pattern(cx, &**sub_pat, scope_stack, scope_map);
- }
-
- if let Some(ref sub_pat) = *middle_sub_pats {
- walk_pattern(cx, &**sub_pat, scope_stack, scope_map);
- }
-
- for sub_pat in back_sub_pats {
- walk_pattern(cx, &**sub_pat, scope_stack, scope_map);
- }
- }
-
- ast::PatMac(_) => {
- cx.sess().span_bug(pat.span, "debuginfo::create_scope_map() - \
- Found unexpanded macro.");
- }
- }
- }
-
- fn walk_expr(cx: &CrateContext,
- exp: &ast::Expr,
- scope_stack: &mut Vec<ScopeStackEntry> ,
- scope_map: &mut NodeMap<DIScope>) {
-
- scope_map.insert(exp.id, scope_stack.last().unwrap().scope_metadata);
-
- match exp.node {
- ast::ExprLit(_) |
- ast::ExprBreak(_) |
- ast::ExprAgain(_) |
- ast::ExprPath(..) => {}
-
- ast::ExprCast(ref sub_exp, _) |
- ast::ExprAddrOf(_, ref sub_exp) |
- ast::ExprField(ref sub_exp, _) |
- ast::ExprTupField(ref sub_exp, _) |
- ast::ExprParen(ref sub_exp) =>
- walk_expr(cx, &**sub_exp, scope_stack, scope_map),
-
- ast::ExprBox(ref place, ref sub_expr) => {
- place.as_ref().map(
- |e| walk_expr(cx, &**e, scope_stack, scope_map));
- walk_expr(cx, &**sub_expr, scope_stack, scope_map);
- }
-
- ast::ExprRet(ref exp_opt) => match *exp_opt {
- Some(ref sub_exp) => walk_expr(cx, &**sub_exp, scope_stack, scope_map),
- None => ()
- },
-
- ast::ExprUnary(_, ref sub_exp) => {
- walk_expr(cx, &**sub_exp, scope_stack, scope_map);
- }
-
- ast::ExprAssignOp(_, ref lhs, ref rhs) |
- ast::ExprIndex(ref lhs, ref rhs) |
- ast::ExprBinary(_, ref lhs, ref rhs) => {
- walk_expr(cx, &**lhs, scope_stack, scope_map);
- walk_expr(cx, &**rhs, scope_stack, scope_map);
- }
-
- ast::ExprRange(ref start, ref end) => {
- start.as_ref().map(|e| walk_expr(cx, &**e, scope_stack, scope_map));
- end.as_ref().map(|e| walk_expr(cx, &**e, scope_stack, scope_map));
- }
-
- ast::ExprVec(ref init_expressions) |
- ast::ExprTup(ref init_expressions) => {
- for ie in init_expressions {
- walk_expr(cx, &**ie, scope_stack, scope_map);
- }
- }
-
- ast::ExprAssign(ref sub_exp1, ref sub_exp2) |
- ast::ExprRepeat(ref sub_exp1, ref sub_exp2) => {
- walk_expr(cx, &**sub_exp1, scope_stack, scope_map);
- walk_expr(cx, &**sub_exp2, scope_stack, scope_map);
- }
-
- ast::ExprIf(ref cond_exp, ref then_block, ref opt_else_exp) => {
- walk_expr(cx, &**cond_exp, scope_stack, scope_map);
-
- with_new_scope(cx,
- then_block.span,
- scope_stack,
- scope_map,
- |cx, scope_stack, scope_map| {
- walk_block(cx, &**then_block, scope_stack, scope_map);
- });
-
- match *opt_else_exp {
- Some(ref else_exp) =>
- walk_expr(cx, &**else_exp, scope_stack, scope_map),
- _ => ()
- }
- }
-
- ast::ExprIfLet(..) => {
- cx.sess().span_bug(exp.span, "debuginfo::create_scope_map() - \
- Found unexpanded if-let.");
- }
-
- ast::ExprWhile(ref cond_exp, ref loop_body, _) => {
- walk_expr(cx, &**cond_exp, scope_stack, scope_map);
-
- with_new_scope(cx,
- loop_body.span,
- scope_stack,
- scope_map,
- |cx, scope_stack, scope_map| {
- walk_block(cx, &**loop_body, scope_stack, scope_map);
- })
- }
-
- ast::ExprWhileLet(..) => {
- cx.sess().span_bug(exp.span, "debuginfo::create_scope_map() - \
- Found unexpanded while-let.");
- }
-
- ast::ExprForLoop(..) => {
- cx.sess().span_bug(exp.span, "debuginfo::create_scope_map() - \
- Found unexpanded for loop.");
- }
-
- ast::ExprMac(_) => {
- cx.sess().span_bug(exp.span, "debuginfo::create_scope_map() - \
- Found unexpanded macro.");
- }
-
- ast::ExprLoop(ref block, _) |
- ast::ExprBlock(ref block) => {
- with_new_scope(cx,
- block.span,
- scope_stack,
- scope_map,
- |cx, scope_stack, scope_map| {
- walk_block(cx, &**block, scope_stack, scope_map);
- })
- }
-
- ast::ExprClosure(_, ref decl, ref block) => {
- with_new_scope(cx,
- block.span,
- scope_stack,
- scope_map,
- |cx, scope_stack, scope_map| {
- for &ast::Arg { pat: ref pattern, .. } in &decl.inputs {
- walk_pattern(cx, &**pattern, scope_stack, scope_map);
- }
-
- walk_block(cx, &**block, scope_stack, scope_map);
- })
- }
-
- ast::ExprCall(ref fn_exp, ref args) => {
- walk_expr(cx, &**fn_exp, scope_stack, scope_map);
-
- for arg_exp in args {
- walk_expr(cx, &**arg_exp, scope_stack, scope_map);
- }
- }
-
- ast::ExprMethodCall(_, _, ref args) => {
- for arg_exp in args {
- walk_expr(cx, &**arg_exp, scope_stack, scope_map);
- }
- }
-
- ast::ExprMatch(ref discriminant_exp, ref arms, _) => {
- walk_expr(cx, &**discriminant_exp, scope_stack, scope_map);
-
- // For each arm we have to first walk the pattern as these might
- // introduce new artificial scopes. It should be sufficient to
- // walk only one pattern per arm, as they all must contain the
- // same binding names.
-
- for arm_ref in arms {
- let arm_span = arm_ref.pats[0].span;
-
- with_new_scope(cx,
- arm_span,
- scope_stack,
- scope_map,
- |cx, scope_stack, scope_map| {
- for pat in &arm_ref.pats {
- walk_pattern(cx, &**pat, scope_stack, scope_map);
- }
-
- if let Some(ref guard_exp) = arm_ref.guard {
- walk_expr(cx, &**guard_exp, scope_stack, scope_map)
- }
-
- walk_expr(cx, &*arm_ref.body, scope_stack, scope_map);
- })
- }
- }
-
- ast::ExprStruct(_, ref fields, ref base_exp) => {
- for &ast::Field { expr: ref exp, .. } in fields {
- walk_expr(cx, &**exp, scope_stack, scope_map);
- }
-
- match *base_exp {
- Some(ref exp) => walk_expr(cx, &**exp, scope_stack, scope_map),
- None => ()
- }
- }
-
- ast::ExprInlineAsm(ast::InlineAsm { ref inputs,
- ref outputs,
- .. }) => {
- // inputs, outputs: Vec<(String, P<Expr>)>
- for &(_, ref exp) in inputs {
- walk_expr(cx, &**exp, scope_stack, scope_map);
- }
-
- for &(_, ref exp, _) in outputs {
- walk_expr(cx, &**exp, scope_stack, scope_map);
- }
- }
- }
- }
-}
-
-
-//=-----------------------------------------------------------------------------
-// Type Names for Debug Info
-//=-----------------------------------------------------------------------------
-
-// Compute the name of the type as it should be stored in debuginfo. Does not do
-// any caching, i.e. calling the function twice with the same type will also do
-// the work twice. The `qualified` parameter only affects the first level of the
-// type name, further levels (i.e. type parameters) are always fully qualified.
-fn compute_debuginfo_type_name<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
- t: Ty<'tcx>,
- qualified: bool)
- -> String {
- let mut result = String::with_capacity(64);
- push_debuginfo_type_name(cx, t, qualified, &mut result);
- result
-}
-
-// Pushes the name of the type as it should be stored in debuginfo on the
-// `output` String. See also compute_debuginfo_type_name().
-fn push_debuginfo_type_name<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
- t: Ty<'tcx>,
- qualified: bool,
- output: &mut String) {
- match t.sty {
- ty::ty_bool => output.push_str("bool"),
- ty::ty_char => output.push_str("char"),
- ty::ty_str => output.push_str("str"),
- ty::ty_int(ast::TyIs) => output.push_str("isize"),
- ty::ty_int(ast::TyI8) => output.push_str("i8"),
- ty::ty_int(ast::TyI16) => output.push_str("i16"),
- ty::ty_int(ast::TyI32) => output.push_str("i32"),
- ty::ty_int(ast::TyI64) => output.push_str("i64"),
- ty::ty_uint(ast::TyUs) => output.push_str("usize"),
- ty::ty_uint(ast::TyU8) => output.push_str("u8"),
- ty::ty_uint(ast::TyU16) => output.push_str("u16"),
- ty::ty_uint(ast::TyU32) => output.push_str("u32"),
- ty::ty_uint(ast::TyU64) => output.push_str("u64"),
- ty::ty_float(ast::TyF32) => output.push_str("f32"),
- ty::ty_float(ast::TyF64) => output.push_str("f64"),
- ty::ty_struct(def_id, substs) |
- ty::ty_enum(def_id, substs) => {
- push_item_name(cx, def_id, qualified, output);
- push_type_params(cx, substs, output);
- },
- ty::ty_tup(ref component_types) => {
- output.push('(');
- for &component_type in component_types {
- push_debuginfo_type_name(cx, component_type, true, output);
- output.push_str(", ");
- }
- if !component_types.is_empty() {
- output.pop();
- output.pop();
- }
- output.push(')');
- },
- ty::ty_uniq(inner_type) => {
- output.push_str("Box<");
- push_debuginfo_type_name(cx, inner_type, true, output);
- output.push('>');
- },
- ty::ty_ptr(ty::mt { ty: inner_type, mutbl } ) => {
- output.push('*');
- match mutbl {
- ast::MutImmutable => output.push_str("const "),
- ast::MutMutable => output.push_str("mut "),
- }
-
- push_debuginfo_type_name(cx, inner_type, true, output);
- },
- ty::ty_rptr(_, ty::mt { ty: inner_type, mutbl }) => {
- output.push('&');
- if mutbl == ast::MutMutable {
- output.push_str("mut ");
- }
-
- push_debuginfo_type_name(cx, inner_type, true, output);
- },
- ty::ty_vec(inner_type, optional_length) => {
- output.push('[');
- push_debuginfo_type_name(cx, inner_type, true, output);
-
- match optional_length {
- Some(len) => {
- output.push_str(&format!("; {}", len));
- }
- None => { /* nothing to do */ }
- };
-
- output.push(']');
- },
- ty::ty_trait(ref trait_data) => {
- let principal = ty::erase_late_bound_regions(cx.tcx(), &trait_data.principal);
- push_item_name(cx, principal.def_id, false, output);
- push_type_params(cx, principal.substs, output);
- },
- ty::ty_bare_fn(_, &ty::BareFnTy{ unsafety, abi, ref sig } ) => {
- if unsafety == ast::Unsafety::Unsafe {
- output.push_str("unsafe ");
- }
-
- if abi != ::syntax::abi::Rust {
- output.push_str("extern \"");
- output.push_str(abi.name());
- output.push_str("\" ");
- }
-
- output.push_str("fn(");
-
- let sig = ty::erase_late_bound_regions(cx.tcx(), sig);
- if !sig.inputs.is_empty() {
- for ¶meter_type in &sig.inputs {
- push_debuginfo_type_name(cx, parameter_type, true, output);
- output.push_str(", ");
- }
- output.pop();
- output.pop();
- }
-
- if sig.variadic {
- if !sig.inputs.is_empty() {
- output.push_str(", ...");
- } else {
- output.push_str("...");
- }
- }
-
- output.push(')');
-
- match sig.output {
- ty::FnConverging(result_type) if ty::type_is_nil(result_type) => {}
- ty::FnConverging(result_type) => {
- output.push_str(" -> ");
- push_debuginfo_type_name(cx, result_type, true, output);
- }
- ty::FnDiverging => {
- output.push_str(" -> !");
- }
- }
- },
- ty::ty_closure(..) => {
- output.push_str("closure");
- }
- ty::ty_err |
- ty::ty_infer(_) |
- ty::ty_projection(..) |
- ty::ty_param(_) => {
- cx.sess().bug(&format!("debuginfo: Trying to create type name for \
- unexpected type: {}", ppaux::ty_to_string(cx.tcx(), t)));
- }
- }
-
- fn push_item_name(cx: &CrateContext,
- def_id: ast::DefId,
- qualified: bool,
- output: &mut String) {
- ty::with_path(cx.tcx(), def_id, |path| {
- if qualified {
- if def_id.krate == ast::LOCAL_CRATE {
- output.push_str(crate_root_namespace(cx));
- output.push_str("::");
- }
-
- let mut path_element_count = 0;
- for path_element in path {
- let name = token::get_name(path_element.name());
- output.push_str(&name);
- output.push_str("::");
- path_element_count += 1;
- }
-
- if path_element_count == 0 {
- cx.sess().bug("debuginfo: Encountered empty item path!");
- }
-
- output.pop();
- output.pop();
- } else {
- let name = token::get_name(path.last()
- .expect("debuginfo: Empty item path?")
- .name());
- output.push_str(&name);
- }
- });
- }
-
- // Pushes the type parameters in the given `Substs` to the output string.
- // This ignores region parameters, since they can't reliably be
- // reconstructed for items from non-local crates. For local crates, this
- // would be possible but with inlining and LTO we have to use the least
- // common denominator - otherwise we would run into conflicts.
- fn push_type_params<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
- substs: &subst::Substs<'tcx>,
- output: &mut String) {
- if substs.types.is_empty() {
- return;
- }
-
- output.push('<');
-
- for &type_parameter in substs.types.iter() {
- push_debuginfo_type_name(cx, type_parameter, true, output);
- output.push_str(", ");
- }
-
- output.pop();
- output.pop();
-
- output.push('>');
- }
-}
-
-
-//=-----------------------------------------------------------------------------
-// Namespace Handling
-//=-----------------------------------------------------------------------------
-
-struct NamespaceTreeNode {
- name: ast::Name,
- scope: DIScope,
- parent: Option<Weak<NamespaceTreeNode>>,
-}
-
-impl NamespaceTreeNode {
- fn mangled_name_of_contained_item(&self, item_name: &str) -> String {
- fn fill_nested(node: &NamespaceTreeNode, output: &mut String) {
- match node.parent {
- Some(ref parent) => fill_nested(&*parent.upgrade().unwrap(), output),
- None => {}
- }
- let string = token::get_name(node.name);
- output.push_str(&format!("{}", string.len()));
- output.push_str(&string);
- }
-
- let mut name = String::from_str("_ZN");
- fill_nested(self, &mut name);
- name.push_str(&format!("{}", item_name.len()));
- name.push_str(item_name);
- name.push('E');
- name
- }
-}
-
-fn crate_root_namespace<'a>(cx: &'a CrateContext) -> &'a str {
- &cx.link_meta().crate_name
-}
-
-fn namespace_for_item(cx: &CrateContext, def_id: ast::DefId) -> Rc<NamespaceTreeNode> {
- ty::with_path(cx.tcx(), def_id, |path| {
- // prepend crate name if not already present
- let krate = if def_id.krate == ast::LOCAL_CRATE {
- let crate_namespace_name = token::intern(crate_root_namespace(cx));
- Some(ast_map::PathMod(crate_namespace_name))
- } else {
- None
- };
- let mut path = krate.into_iter().chain(path).peekable();
-
- let mut current_key = Vec::new();
- let mut parent_node: Option<Rc<NamespaceTreeNode>> = None;
-
- // Create/Lookup namespace for each element of the path.
- loop {
- // Emulate a for loop so we can use peek below.
- let path_element = match path.next() {
- Some(e) => e,
- None => break
- };
- // Ignore the name of the item (the last path element).
- if path.peek().is_none() {
- break;
- }
-
- let name = path_element.name();
- current_key.push(name);
-
- let existing_node = debug_context(cx).namespace_map.borrow()
- .get(¤t_key).cloned();
- let current_node = match existing_node {
- Some(existing_node) => existing_node,
- None => {
- // create and insert
- let parent_scope = match parent_node {
- Some(ref node) => node.scope,
- None => ptr::null_mut()
- };
- let namespace_name = token::get_name(name);
- let namespace_name = CString::new(namespace_name.as_bytes()).unwrap();
- let scope = unsafe {
- llvm::LLVMDIBuilderCreateNameSpace(
- DIB(cx),
- parent_scope,
- namespace_name.as_ptr(),
- // cannot reconstruct file ...
- ptr::null_mut(),
- // ... or line information, but that's not so important.
- 0)
- };
-
- let node = Rc::new(NamespaceTreeNode {
- name: name,
- scope: scope,
- parent: parent_node.map(|parent| parent.downgrade()),
- });
-
- debug_context(cx).namespace_map.borrow_mut()
- .insert(current_key.clone(), node.clone());
-
- node
- }
- };
-
- parent_node = Some(current_node);
- }
-
- match parent_node {
- Some(node) => node,
- None => {
- cx.sess().bug(&format!("debuginfo::namespace_for_item(): \
- path too short for {:?}",
- def_id));
- }
- }
- })
-}
-
-
-//=-----------------------------------------------------------------------------
-// .debug_gdb_scripts binary section
-//=-----------------------------------------------------------------------------
-
-/// Inserts a side-effect free instruction sequence that makes sure that the
-/// .debug_gdb_scripts global is referenced, so it isn't removed by the linker.
-pub fn insert_reference_to_gdb_debug_scripts_section_global(ccx: &CrateContext) {
- if needs_gdb_debug_scripts_section(ccx) {
- let empty = CString::new("").unwrap();
- let gdb_debug_scripts_section_global =
- get_or_insert_gdb_debug_scripts_section_global(ccx);
- unsafe {
- let volative_load_instruction =
- llvm::LLVMBuildLoad(ccx.raw_builder(),
- gdb_debug_scripts_section_global,
- empty.as_ptr());
- llvm::LLVMSetVolatile(volative_load_instruction, llvm::True);
- }
- }
-}
-
-/// Allocates the global variable responsible for the .debug_gdb_scripts binary
-/// section.
-fn get_or_insert_gdb_debug_scripts_section_global(ccx: &CrateContext)
- -> llvm::ValueRef {
- let section_var_name = "__rustc_debug_gdb_scripts_section__";
-
- let section_var = unsafe {
- llvm::LLVMGetNamedGlobal(ccx.llmod(),
- section_var_name.as_ptr() as *const _)
- };
-
- if section_var == ptr::null_mut() {
- let section_name = b".debug_gdb_scripts\0";
- let section_contents = b"\x01gdb_load_rust_pretty_printers.py\0";
-
- unsafe {
- let llvm_type = Type::array(&Type::i8(ccx),
- section_contents.len() as u64);
-
- let section_var = declare::define_global(ccx, section_var_name,
- llvm_type).unwrap_or_else(||{
- ccx.sess().bug(&format!("symbol `{}` is already defined", section_var_name))
- });
- llvm::LLVMSetSection(section_var, section_name.as_ptr() as *const _);
- llvm::LLVMSetInitializer(section_var, C_bytes(ccx, section_contents));
- llvm::LLVMSetGlobalConstant(section_var, llvm::True);
- llvm::LLVMSetUnnamedAddr(section_var, llvm::True);
- llvm::SetLinkage(section_var, llvm::Linkage::LinkOnceODRLinkage);
- // This should make sure that the whole section is not larger than
- // the string it contains. Otherwise we get a warning from GDB.
- llvm::LLVMSetAlignment(section_var, 1);
- section_var
- }
- } else {
- section_var
- }
-}
-
-fn needs_gdb_debug_scripts_section(ccx: &CrateContext) -> bool {
- let omit_gdb_pretty_printer_section =
- attr::contains_name(&ccx.tcx()
- .map
- .krate()
- .attrs,
- "omit_gdb_pretty_printer_section");
-
- !omit_gdb_pretty_printer_section &&
- !ccx.sess().target.target.options.is_like_osx &&
- !ccx.sess().target.target.options.is_like_windows &&
- ccx.sess().opts.debuginfo != NoDebugInfo
-}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use super::metadata::file_metadata;
+use super::utils::DIB;
+
+use llvm;
+use llvm::debuginfo::{DIScope, DISubprogram};
+use trans::common::CrateContext;
+use middle::pat_util;
+use util::nodemap::NodeMap;
+
+use libc::c_uint;
+use syntax::codemap::{Span, Pos};
+use syntax::{ast, codemap, ast_util};
+
+// This procedure builds the *scope map* for a given function, which maps any
+// given ast::NodeId in the function's AST to the correct DIScope metadata instance.
+//
+// This builder procedure walks the AST in execution order and keeps track of
+// what belongs to which scope, creating DIScope DIEs along the way, and
+// introducing *artificial* lexical scope descriptors where necessary. These
+// artificial scopes allow GDB to correctly handle name shadowing.
+pub fn create_scope_map(cx: &CrateContext,
+ args: &[ast::Arg],
+ fn_entry_block: &ast::Block,
+ fn_metadata: DISubprogram,
+ fn_ast_id: ast::NodeId)
+ -> NodeMap<DIScope> {
+ let mut scope_map = NodeMap();
+
+ let def_map = &cx.tcx().def_map;
+
+ let mut scope_stack = vec!(ScopeStackEntry { scope_metadata: fn_metadata, name: None });
+ scope_map.insert(fn_ast_id, fn_metadata);
+
+ // Push argument identifiers onto the stack so arguments integrate nicely
+ // with variable shadowing.
+ for arg in args {
+ pat_util::pat_bindings(def_map, &*arg.pat, |_, node_id, _, path1| {
+ scope_stack.push(ScopeStackEntry { scope_metadata: fn_metadata,
+ name: Some(path1.node.name) });
+ scope_map.insert(node_id, fn_metadata);
+ })
+ }
+
+ // Clang creates a separate scope for function bodies, so let's do this too.
+ with_new_scope(cx,
+ fn_entry_block.span,
+ &mut scope_stack,
+ &mut scope_map,
+ |cx, scope_stack, scope_map| {
+ walk_block(cx, fn_entry_block, scope_stack, scope_map);
+ });
+
+ return scope_map;
+}
+
+// local helper functions for walking the AST.
+fn with_new_scope<F>(cx: &CrateContext,
+ scope_span: Span,
+ scope_stack: &mut Vec<ScopeStackEntry> ,
+ scope_map: &mut NodeMap<DIScope>,
+ inner_walk: F) where
+ F: FnOnce(&CrateContext, &mut Vec<ScopeStackEntry>, &mut NodeMap<DIScope>),
+{
+ // Create a new lexical scope and push it onto the stack
+ let loc = cx.sess().codemap().lookup_char_pos(scope_span.lo);
+ let file_metadata = file_metadata(cx, &loc.file.name);
+ let parent_scope = scope_stack.last().unwrap().scope_metadata;
+
+ let scope_metadata = unsafe {
+ llvm::LLVMDIBuilderCreateLexicalBlock(
+ DIB(cx),
+ parent_scope,
+ file_metadata,
+ loc.line as c_uint,
+ loc.col.to_usize() as c_uint)
+ };
+
+ scope_stack.push(ScopeStackEntry { scope_metadata: scope_metadata, name: None });
+
+ inner_walk(cx, scope_stack, scope_map);
+
+ // pop artificial scopes
+ while scope_stack.last().unwrap().name.is_some() {
+ scope_stack.pop();
+ }
+
+ if scope_stack.last().unwrap().scope_metadata != scope_metadata {
+ cx.sess().span_bug(scope_span, "debuginfo: Inconsistency in scope management.");
+ }
+
+ scope_stack.pop();
+}
+
+struct ScopeStackEntry {
+ scope_metadata: DIScope,
+ name: Option<ast::Name>
+}
+
+fn walk_block(cx: &CrateContext,
+ block: &ast::Block,
+ scope_stack: &mut Vec<ScopeStackEntry> ,
+ scope_map: &mut NodeMap<DIScope>) {
+ scope_map.insert(block.id, scope_stack.last().unwrap().scope_metadata);
+
+ // The interesting things here are statements and the concluding expression.
+ for statement in &block.stmts {
+ scope_map.insert(ast_util::stmt_id(&**statement),
+ scope_stack.last().unwrap().scope_metadata);
+
+ match statement.node {
+ ast::StmtDecl(ref decl, _) =>
+ walk_decl(cx, &**decl, scope_stack, scope_map),
+ ast::StmtExpr(ref exp, _) |
+ ast::StmtSemi(ref exp, _) =>
+ walk_expr(cx, &**exp, scope_stack, scope_map),
+ ast::StmtMac(..) => () // Ignore macros (which should be expanded anyway).
+ }
+ }
+
+ if let Some(ref exp) = block.expr {
+ walk_expr(cx, &**exp, scope_stack, scope_map);
+ }
+}
+
+fn walk_decl(cx: &CrateContext,
+ decl: &ast::Decl,
+ scope_stack: &mut Vec<ScopeStackEntry> ,
+ scope_map: &mut NodeMap<DIScope>) {
+ match *decl {
+ codemap::Spanned { node: ast::DeclLocal(ref local), .. } => {
+ scope_map.insert(local.id, scope_stack.last().unwrap().scope_metadata);
+
+ walk_pattern(cx, &*local.pat, scope_stack, scope_map);
+
+ if let Some(ref exp) = local.init {
+ walk_expr(cx, &**exp, scope_stack, scope_map);
+ }
+ }
+ _ => ()
+ }
+}
+
+fn walk_pattern(cx: &CrateContext,
+ pat: &ast::Pat,
+ scope_stack: &mut Vec<ScopeStackEntry> ,
+ scope_map: &mut NodeMap<DIScope>) {
+
+ let def_map = &cx.tcx().def_map;
+
+ // Unfortunately, we cannot just use pat_util::pat_bindings() or
+ // ast_util::walk_pat() here because we have to visit *all* nodes in
+ // order to put them into the scope map. The above functions don't do that.
+ match pat.node {
+ ast::PatIdent(_, ref path1, ref sub_pat_opt) => {
+
+ // Check if this is a binding. If so we need to put it on the
+ // scope stack and maybe introduce an artificial scope
+ if pat_util::pat_is_binding(def_map, &*pat) {
+
+ let name = path1.node.name;
+
+ // LLVM does not properly generate 'DW_AT_start_scope' fields
+ // for variable DIEs. For this reason we have to introduce
+ // an artificial scope at bindings whenever a variable with
+ // the same name is declared in *any* parent scope.
+ //
+ // Otherwise the following error occurs:
+ //
+ // let x = 10;
+ //
+ // do_something(); // 'gdb print x' correctly prints 10
+ //
+ // {
+ // do_something(); // 'gdb print x' prints 0, because it
+ // // already reads the uninitialized 'x'
+ // // from the next line...
+ // let x = 100;
+ // do_something(); // 'gdb print x' correctly prints 100
+ // }
+
+ // Is there already a binding with that name?
+ // N.B.: this comparison must be UNhygienic... because
+ // gdb knows nothing about the context, so any two
+ // variables with the same name will cause the problem.
+ let need_new_scope = scope_stack
+ .iter()
+ .any(|entry| entry.name == Some(name));
+
+ if need_new_scope {
+ // Create a new lexical scope and push it onto the stack
+ let loc = cx.sess().codemap().lookup_char_pos(pat.span.lo);
+ let file_metadata = file_metadata(cx, &loc.file.name);
+ let parent_scope = scope_stack.last().unwrap().scope_metadata;
+
+ let scope_metadata = unsafe {
+ llvm::LLVMDIBuilderCreateLexicalBlock(
+ DIB(cx),
+ parent_scope,
+ file_metadata,
+ loc.line as c_uint,
+ loc.col.to_usize() as c_uint)
+ };
+
+ scope_stack.push(ScopeStackEntry {
+ scope_metadata: scope_metadata,
+ name: Some(name)
+ });
+
+ } else {
+ // Push a new entry anyway so the name can be found
+ let prev_metadata = scope_stack.last().unwrap().scope_metadata;
+ scope_stack.push(ScopeStackEntry {
+ scope_metadata: prev_metadata,
+ name: Some(name)
+ });
+ }
+ }
+
+ scope_map.insert(pat.id, scope_stack.last().unwrap().scope_metadata);
+
+ if let Some(ref sub_pat) = *sub_pat_opt {
+ walk_pattern(cx, &**sub_pat, scope_stack, scope_map);
+ }
+ }
+
+ ast::PatWild(_) => {
+ scope_map.insert(pat.id, scope_stack.last().unwrap().scope_metadata);
+ }
+
+ ast::PatEnum(_, ref sub_pats_opt) => {
+ scope_map.insert(pat.id, scope_stack.last().unwrap().scope_metadata);
+
+ if let Some(ref sub_pats) = *sub_pats_opt {
+ for p in sub_pats {
+ walk_pattern(cx, &**p, scope_stack, scope_map);
+ }
+ }
+ }
+
+ ast::PatQPath(..) => {
+ scope_map.insert(pat.id, scope_stack.last().unwrap().scope_metadata);
+ }
+
+ ast::PatStruct(_, ref field_pats, _) => {
+ scope_map.insert(pat.id, scope_stack.last().unwrap().scope_metadata);
+
+ for &codemap::Spanned {
+ node: ast::FieldPat { pat: ref sub_pat, .. },
+ ..
+ } in field_pats.iter() {
+ walk_pattern(cx, &**sub_pat, scope_stack, scope_map);
+ }
+ }
+
+ ast::PatTup(ref sub_pats) => {
+ scope_map.insert(pat.id, scope_stack.last().unwrap().scope_metadata);
+
+ for sub_pat in sub_pats {
+ walk_pattern(cx, &**sub_pat, scope_stack, scope_map);
+ }
+ }
+
+ ast::PatBox(ref sub_pat) | ast::PatRegion(ref sub_pat, _) => {
+ scope_map.insert(pat.id, scope_stack.last().unwrap().scope_metadata);
+ walk_pattern(cx, &**sub_pat, scope_stack, scope_map);
+ }
+
+ ast::PatLit(ref exp) => {
+ scope_map.insert(pat.id, scope_stack.last().unwrap().scope_metadata);
+ walk_expr(cx, &**exp, scope_stack, scope_map);
+ }
+
+ ast::PatRange(ref exp1, ref exp2) => {
+ scope_map.insert(pat.id, scope_stack.last().unwrap().scope_metadata);
+ walk_expr(cx, &**exp1, scope_stack, scope_map);
+ walk_expr(cx, &**exp2, scope_stack, scope_map);
+ }
+
+ ast::PatVec(ref front_sub_pats, ref middle_sub_pats, ref back_sub_pats) => {
+ scope_map.insert(pat.id, scope_stack.last().unwrap().scope_metadata);
+
+ for sub_pat in front_sub_pats {
+ walk_pattern(cx, &**sub_pat, scope_stack, scope_map);
+ }
+
+ if let Some(ref sub_pat) = *middle_sub_pats {
+ walk_pattern(cx, &**sub_pat, scope_stack, scope_map);
+ }
+
+ for sub_pat in back_sub_pats {
+ walk_pattern(cx, &**sub_pat, scope_stack, scope_map);
+ }
+ }
+
+ ast::PatMac(_) => {
+ cx.sess().span_bug(pat.span, "debuginfo::create_scope_map() - \
+ Found unexpanded macro.");
+ }
+ }
+}
+
+fn walk_expr(cx: &CrateContext,
+ exp: &ast::Expr,
+ scope_stack: &mut Vec<ScopeStackEntry> ,
+ scope_map: &mut NodeMap<DIScope>) {
+
+ scope_map.insert(exp.id, scope_stack.last().unwrap().scope_metadata);
+
+ match exp.node {
+ ast::ExprLit(_) |
+ ast::ExprBreak(_) |
+ ast::ExprAgain(_) |
+ ast::ExprPath(..) => {}
+
+ ast::ExprCast(ref sub_exp, _) |
+ ast::ExprAddrOf(_, ref sub_exp) |
+ ast::ExprField(ref sub_exp, _) |
+ ast::ExprTupField(ref sub_exp, _) |
+ ast::ExprParen(ref sub_exp) =>
+ walk_expr(cx, &**sub_exp, scope_stack, scope_map),
+
+ ast::ExprBox(ref place, ref sub_expr) => {
+ place.as_ref().map(
+ |e| walk_expr(cx, &**e, scope_stack, scope_map));
+ walk_expr(cx, &**sub_expr, scope_stack, scope_map);
+ }
+
+ ast::ExprRet(ref exp_opt) => match *exp_opt {
+ Some(ref sub_exp) => walk_expr(cx, &**sub_exp, scope_stack, scope_map),
+ None => ()
+ },
+
+ ast::ExprUnary(_, ref sub_exp) => {
+ walk_expr(cx, &**sub_exp, scope_stack, scope_map);
+ }
+
+ ast::ExprAssignOp(_, ref lhs, ref rhs) |
+ ast::ExprIndex(ref lhs, ref rhs) |
+ ast::ExprBinary(_, ref lhs, ref rhs) => {
+ walk_expr(cx, &**lhs, scope_stack, scope_map);
+ walk_expr(cx, &**rhs, scope_stack, scope_map);
+ }
+
+ ast::ExprRange(ref start, ref end) => {
+ start.as_ref().map(|e| walk_expr(cx, &**e, scope_stack, scope_map));
+ end.as_ref().map(|e| walk_expr(cx, &**e, scope_stack, scope_map));
+ }
+
+ ast::ExprVec(ref init_expressions) |
+ ast::ExprTup(ref init_expressions) => {
+ for ie in init_expressions {
+ walk_expr(cx, &**ie, scope_stack, scope_map);
+ }
+ }
+
+ ast::ExprAssign(ref sub_exp1, ref sub_exp2) |
+ ast::ExprRepeat(ref sub_exp1, ref sub_exp2) => {
+ walk_expr(cx, &**sub_exp1, scope_stack, scope_map);
+ walk_expr(cx, &**sub_exp2, scope_stack, scope_map);
+ }
+
+ ast::ExprIf(ref cond_exp, ref then_block, ref opt_else_exp) => {
+ walk_expr(cx, &**cond_exp, scope_stack, scope_map);
+
+ with_new_scope(cx,
+ then_block.span,
+ scope_stack,
+ scope_map,
+ |cx, scope_stack, scope_map| {
+ walk_block(cx, &**then_block, scope_stack, scope_map);
+ });
+
+ match *opt_else_exp {
+ Some(ref else_exp) =>
+ walk_expr(cx, &**else_exp, scope_stack, scope_map),
+ _ => ()
+ }
+ }
+
+ ast::ExprIfLet(..) => {
+ cx.sess().span_bug(exp.span, "debuginfo::create_scope_map() - \
+ Found unexpanded if-let.");
+ }
+
+ ast::ExprWhile(ref cond_exp, ref loop_body, _) => {
+ walk_expr(cx, &**cond_exp, scope_stack, scope_map);
+
+ with_new_scope(cx,
+ loop_body.span,
+ scope_stack,
+ scope_map,
+ |cx, scope_stack, scope_map| {
+ walk_block(cx, &**loop_body, scope_stack, scope_map);
+ })
+ }
+
+ ast::ExprWhileLet(..) => {
+ cx.sess().span_bug(exp.span, "debuginfo::create_scope_map() - \
+ Found unexpanded while-let.");
+ }
+
+ ast::ExprForLoop(..) => {
+ cx.sess().span_bug(exp.span, "debuginfo::create_scope_map() - \
+ Found unexpanded for loop.");
+ }
+
+ ast::ExprMac(_) => {
+ cx.sess().span_bug(exp.span, "debuginfo::create_scope_map() - \
+ Found unexpanded macro.");
+ }
+
+ ast::ExprLoop(ref block, _) |
+ ast::ExprBlock(ref block) => {
+ with_new_scope(cx,
+ block.span,
+ scope_stack,
+ scope_map,
+ |cx, scope_stack, scope_map| {
+ walk_block(cx, &**block, scope_stack, scope_map);
+ })
+ }
+
+ ast::ExprClosure(_, ref decl, ref block) => {
+ with_new_scope(cx,
+ block.span,
+ scope_stack,
+ scope_map,
+ |cx, scope_stack, scope_map| {
+ for &ast::Arg { pat: ref pattern, .. } in &decl.inputs {
+ walk_pattern(cx, &**pattern, scope_stack, scope_map);
+ }
+
+ walk_block(cx, &**block, scope_stack, scope_map);
+ })
+ }
+
+ ast::ExprCall(ref fn_exp, ref args) => {
+ walk_expr(cx, &**fn_exp, scope_stack, scope_map);
+
+ for arg_exp in args {
+ walk_expr(cx, &**arg_exp, scope_stack, scope_map);
+ }
+ }
+
+ ast::ExprMethodCall(_, _, ref args) => {
+ for arg_exp in args {
+ walk_expr(cx, &**arg_exp, scope_stack, scope_map);
+ }
+ }
+
+ ast::ExprMatch(ref discriminant_exp, ref arms, _) => {
+ walk_expr(cx, &**discriminant_exp, scope_stack, scope_map);
+
+ // For each arm we have to first walk the pattern as these might
+ // introduce new artificial scopes. It should be sufficient to
+ // walk only one pattern per arm, as they all must contain the
+ // same binding names.
+
+ for arm_ref in arms {
+ let arm_span = arm_ref.pats[0].span;
+
+ with_new_scope(cx,
+ arm_span,
+ scope_stack,
+ scope_map,
+ |cx, scope_stack, scope_map| {
+ for pat in &arm_ref.pats {
+ walk_pattern(cx, &**pat, scope_stack, scope_map);
+ }
+
+ if let Some(ref guard_exp) = arm_ref.guard {
+ walk_expr(cx, &**guard_exp, scope_stack, scope_map)
+ }
+
+ walk_expr(cx, &*arm_ref.body, scope_stack, scope_map);
+ })
+ }
+ }
+
+ ast::ExprStruct(_, ref fields, ref base_exp) => {
+ for &ast::Field { expr: ref exp, .. } in fields {
+ walk_expr(cx, &**exp, scope_stack, scope_map);
+ }
+
+ match *base_exp {
+ Some(ref exp) => walk_expr(cx, &**exp, scope_stack, scope_map),
+ None => ()
+ }
+ }
+
+ ast::ExprInlineAsm(ast::InlineAsm { ref inputs,
+ ref outputs,
+ .. }) => {
+ // inputs, outputs: Vec<(String, P<Expr>)>
+ for &(_, ref exp) in inputs {
+ walk_expr(cx, &**exp, scope_stack, scope_map);
+ }
+
+ for &(_, ref exp, _) in outputs {
+ walk_expr(cx, &**exp, scope_stack, scope_map);
+ }
+ }
+ }
+}
\ No newline at end of file
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! # Debug Info Module
+//!
+//! This module serves the purpose of generating debug symbols. We use LLVM's
+//! [source level debugging](http://!llvm.org/docs/SourceLevelDebugging.html)
+//! features for generating the debug information. The general principle is
+//! this:
+//!
+//! Given the right metadata in the LLVM IR, the LLVM code generator is able to
+//! create DWARF debug symbols for the given code. The
+//! [metadata](http://!llvm.org/docs/LangRef.html#metadata-type) is structured
+//! much like DWARF *debugging information entries* (DIE), representing type
+//! information such as datatype layout, function signatures, block layout,
+//! variable location and scope information, etc. It is the purpose of this
+//! module to generate correct metadata and insert it into the LLVM IR.
+//!
+//! As the exact format of metadata trees may change between different LLVM
+//! versions, we now use LLVM
+//! [DIBuilder](http://!llvm.org/docs/doxygen/html/classllvm_1_1DIBuilder.html)
+//! to create metadata where possible. This will hopefully ease the adaption of
+//! this module to future LLVM versions.
+//!
+//! The public API of the module is a set of functions that will insert the
+//! correct metadata into the LLVM IR when called with the right parameters.
+//! The module is thus driven from an outside client with functions like
+//! `debuginfo::create_local_var_metadata(bcx: block, local: &ast::local)`.
+//!
+//! Internally the module will try to reuse already created metadata by
+//! utilizing a cache. The way to get a shared metadata node when needed is
+//! thus to just call the corresponding function in this module:
+//!
+//! let file_metadata = file_metadata(crate_context, path);
+//!
+//! The function will take care of probing the cache for an existing node for
+//! that exact file path.
+//!
+//! All private state used by the module is stored within either the
+//! CrateDebugContext struct (owned by the CrateContext) or the
+//! FunctionDebugContext (owned by the FunctionContext).
+//!
+//! This file consists of three conceptual sections:
+//! 1. The public interface of the module
+//! 2. Module-internal metadata creation functions
+//! 3. Minor utility functions
+//!
+//!
+//! ## Recursive Types
+//!
+//! Some kinds of types, such as structs and enums can be recursive. That means
+//! that the type definition of some type X refers to some other type which in
+//! turn (transitively) refers to X. This introduces cycles into the type
+//! referral graph. A naive algorithm doing an on-demand, depth-first traversal
+//! of this graph when describing types, can get trapped in an endless loop
+//! when it reaches such a cycle.
+//!
+//! For example, the following simple type for a singly-linked list...
+//!
+//! ```
+//! struct List {
+//! value: int,
+//! tail: Option<Box<List>>,
+//! }
+//! ```
+//!
+//! will generate the following callstack with a naive DFS algorithm:
+//!
+//! ```
+//! describe(t = List)
+//! describe(t = int)
+//! describe(t = Option<Box<List>>)
+//! describe(t = Box<List>)
+//! describe(t = List) // at the beginning again...
+//! ...
+//! ```
+//!
+//! To break cycles like these, we use "forward declarations". That is, when
+//! the algorithm encounters a possibly recursive type (any struct or enum), it
+//! immediately creates a type description node and inserts it into the cache
+//! *before* describing the members of the type. This type description is just
+//! a stub (as type members are not described and added to it yet) but it
+//! allows the algorithm to already refer to the type. After the stub is
+//! inserted into the cache, the algorithm continues as before. If it now
+//! encounters a recursive reference, it will hit the cache and does not try to
+//! describe the type anew.
+//!
+//! This behaviour is encapsulated in the 'RecursiveTypeDescription' enum,
+//! which represents a kind of continuation, storing all state needed to
+//! continue traversal at the type members after the type has been registered
+//! with the cache. (This implementation approach might be a tad over-
+//! engineered and may change in the future)
+//!
+//!
+//! ## Source Locations and Line Information
+//!
+//! In addition to data type descriptions the debugging information must also
+//! allow to map machine code locations back to source code locations in order
+//! to be useful. This functionality is also handled in this module. The
+//! following functions allow to control source mappings:
+//!
+//! + set_source_location()
+//! + clear_source_location()
+//! + start_emitting_source_locations()
+//!
+//! `set_source_location()` allows to set the current source location. All IR
+//! instructions created after a call to this function will be linked to the
+//! given source location, until another location is specified with
+//! `set_source_location()` or the source location is cleared with
+//! `clear_source_location()`. In the later case, subsequent IR instruction
+//! will not be linked to any source location. As you can see, this is a
+//! stateful API (mimicking the one in LLVM), so be careful with source
+//! locations set by previous calls. It's probably best to not rely on any
+//! specific state being present at a given point in code.
+//!
+//! One topic that deserves some extra attention is *function prologues*. At
+//! the beginning of a function's machine code there are typically a few
+//! instructions for loading argument values into allocas and checking if
+//! there's enough stack space for the function to execute. This *prologue* is
+//! not visible in the source code and LLVM puts a special PROLOGUE END marker
+//! into the line table at the first non-prologue instruction of the function.
+//! In order to find out where the prologue ends, LLVM looks for the first
+//! instruction in the function body that is linked to a source location. So,
+//! when generating prologue instructions we have to make sure that we don't
+//! emit source location information until the 'real' function body begins. For
+//! this reason, source location emission is disabled by default for any new
+//! function being translated and is only activated after a call to the third
+//! function from the list above, `start_emitting_source_locations()`. This
+//! function should be called right before regularly starting to translate the
+//! top-level block of the given function.
+//!
+//! There is one exception to the above rule: `llvm.dbg.declare` instruction
+//! must be linked to the source location of the variable being declared. For
+//! function parameters these `llvm.dbg.declare` instructions typically occur
+//! in the middle of the prologue, however, they are ignored by LLVM's prologue
+//! detection. The `create_argument_metadata()` and related functions take care
+//! of linking the `llvm.dbg.declare` instructions to the correct source
+//! locations even while source location emission is still disabled, so there
+//! is no need to do anything special with source location handling here.
+//!
+//! ## Unique Type Identification
+//!
+//! In order for link-time optimization to work properly, LLVM needs a unique
+//! type identifier that tells it across compilation units which types are the
+//! same as others. This type identifier is created by
+//! TypeMap::get_unique_type_id_of_type() using the following algorithm:
+//!
+//! (1) Primitive types have their name as ID
+//! (2) Structs, enums and traits have a multipart identifier
+//!
+//! (1) The first part is the SVH (strict version hash) of the crate they
+//! wereoriginally defined in
+//!
+//! (2) The second part is the ast::NodeId of the definition in their
+//! originalcrate
+//!
+//! (3) The final part is a concatenation of the type IDs of their concrete
+//! typearguments if they are generic types.
+//!
+//! (3) Tuple-, pointer and function types are structurally identified, which
+//! means that they are equivalent if their component types are equivalent
+//! (i.e. (int, int) is the same regardless in which crate it is used).
+//!
+//! This algorithm also provides a stable ID for types that are defined in one
+//! crate but instantiated from metadata within another crate. We just have to
+//! take care to always map crate and node IDs back to the original crate
+//! context.
+//!
+//! As a side-effect these unique type IDs also help to solve a problem arising
+//! from lifetime parameters. Since lifetime parameters are completely omitted
+//! in debuginfo, more than one `Ty` instance may map to the same debuginfo
+//! type metadata, that is, some struct `Struct<'a>` may have N instantiations
+//! with different concrete substitutions for `'a`, and thus there will be N
+//! `Ty` instances for the type `Struct<'a>` even though it is not generic
+//! otherwise. Unfortunately this means that we cannot use `ty::type_id()` as
+//! cheap identifier for type metadata---we have done this in the past, but it
+//! led to unnecessary metadata duplication in the best case and LLVM
+//! assertions in the worst. However, the unique type ID as described above
+//! *can* be used as identifier. Since it is comparatively expensive to
+//! construct, though, `ty::type_id()` is still used additionally as an
+//! optimization for cases where the exact same type has been seen before
+//! (which is most of the time).
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// .debug_gdb_scripts binary section.
+
+use llvm;
+use llvm::ValueRef;
+
+use trans::common::{C_bytes, CrateContext};
+use trans::declare;
+use trans::type_::Type;
+use middle::ty::ClosureTyper;
+use session::config::NoDebugInfo;
+
+use std::ffi::CString;
+use std::ptr;
+use syntax::attr;
+
+
+/// Inserts a side-effect free instruction sequence that makes sure that the
+/// .debug_gdb_scripts global is referenced, so it isn't removed by the linker.
+pub fn insert_reference_to_gdb_debug_scripts_section_global(ccx: &CrateContext) {
+ if needs_gdb_debug_scripts_section(ccx) {
+ let empty = CString::new("").unwrap();
+ let gdb_debug_scripts_section_global =
+ get_or_insert_gdb_debug_scripts_section_global(ccx);
+ unsafe {
+ let volative_load_instruction =
+ llvm::LLVMBuildLoad(ccx.raw_builder(),
+ gdb_debug_scripts_section_global,
+ empty.as_ptr());
+ llvm::LLVMSetVolatile(volative_load_instruction, llvm::True);
+ }
+ }
+}
+
+/// Allocates the global variable responsible for the .debug_gdb_scripts binary
+/// section.
+pub fn get_or_insert_gdb_debug_scripts_section_global(ccx: &CrateContext)
+ -> llvm::ValueRef {
+ let section_var_name = "__rustc_debug_gdb_scripts_section__";
+
+ let section_var = unsafe {
+ llvm::LLVMGetNamedGlobal(ccx.llmod(),
+ section_var_name.as_ptr() as *const _)
+ };
+
+ if section_var == ptr::null_mut() {
+ let section_name = b".debug_gdb_scripts\0";
+ let section_contents = b"\x01gdb_load_rust_pretty_printers.py\0";
+
+ unsafe {
+ let llvm_type = Type::array(&Type::i8(ccx),
+ section_contents.len() as u64);
+
+ let section_var = declare::define_global(ccx, section_var_name,
+ llvm_type).unwrap_or_else(||{
+ ccx.sess().bug(&format!("symbol `{}` is already defined", section_var_name))
+ });
+ llvm::LLVMSetSection(section_var, section_name.as_ptr() as *const _);
+ llvm::LLVMSetInitializer(section_var, C_bytes(ccx, section_contents));
+ llvm::LLVMSetGlobalConstant(section_var, llvm::True);
+ llvm::LLVMSetUnnamedAddr(section_var, llvm::True);
+ llvm::SetLinkage(section_var, llvm::Linkage::LinkOnceODRLinkage);
+ // This should make sure that the whole section is not larger than
+ // the string it contains. Otherwise we get a warning from GDB.
+ llvm::LLVMSetAlignment(section_var, 1);
+ section_var
+ }
+ } else {
+ section_var
+ }
+}
+
+pub fn needs_gdb_debug_scripts_section(ccx: &CrateContext) -> bool {
+ let omit_gdb_pretty_printer_section =
+ attr::contains_name(&ccx.tcx()
+ .map
+ .krate()
+ .attrs,
+ "omit_gdb_pretty_printer_section");
+
+ !omit_gdb_pretty_printer_section &&
+ !ccx.sess().target.target.options.is_like_osx &&
+ !ccx.sess().target.target.options.is_like_windows &&
+ ccx.sess().opts.debuginfo != NoDebugInfo
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use self::RecursiveTypeDescription::*;
+use self::MemberOffset::*;
+use self::MemberDescriptionFactory::*;
+use self::EnumDiscriminantInfo::*;
+
+use super::utils::{debug_context, DIB, span_start, bytes_to_bits, size_and_align_of,
+ get_namespace_and_span_for_item, create_DIArray,
+ fn_should_be_ignored, is_node_local_to_unit};
+use super::namespace::namespace_for_item;
+use super::type_names::{compute_debuginfo_type_name, push_debuginfo_type_name};
+use super::{declare_local, VariableKind, VariableAccess};
+
+use llvm::{self, ValueRef};
+use llvm::debuginfo::{DIType, DIFile, DIScope, DIDescriptor, DICompositeType};
+
+use metadata::csearch;
+use middle::pat_util;
+use middle::subst::{self, Substs};
+use trans::{type_of, adt, machine, monomorphize};
+use trans::common::{self, CrateContext, FunctionContext, NormalizingClosureTyper, Block};
+use trans::_match::{BindingInfo, TrByCopy, TrByMove, TrByRef};
+use trans::type_::Type;
+use middle::ty::{self, Ty, ClosureTyper};
+use session::config::{self, FullDebugInfo};
+use util::nodemap::FnvHashMap;
+use util::ppaux;
+use util::common::path2cstr;
+
+use libc::{c_uint, c_longlong};
+use std::ffi::CString;
+use std::path::Path;
+use std::ptr;
+use std::rc::Rc;
+use syntax::util::interner::Interner;
+use syntax::codemap::Span;
+use syntax::{ast, codemap, ast_util, ast_map};
+use syntax::parse::token::{self, special_idents};
+
+
+const DW_LANG_RUST: c_uint = 0x9000;
+#[allow(non_upper_case_globals)]
+const DW_ATE_boolean: c_uint = 0x02;
+#[allow(non_upper_case_globals)]
+const DW_ATE_float: c_uint = 0x04;
+#[allow(non_upper_case_globals)]
+const DW_ATE_signed: c_uint = 0x05;
+#[allow(non_upper_case_globals)]
+const DW_ATE_unsigned: c_uint = 0x07;
+#[allow(non_upper_case_globals)]
+const DW_ATE_unsigned_char: c_uint = 0x08;
+
+pub const UNKNOWN_LINE_NUMBER: c_uint = 0;
+pub const UNKNOWN_COLUMN_NUMBER: c_uint = 0;
+
+// ptr::null() doesn't work :(
+const UNKNOWN_FILE_METADATA: DIFile = (0 as DIFile);
+const UNKNOWN_SCOPE_METADATA: DIScope = (0 as DIScope);
+
+const FLAGS_NONE: c_uint = 0;
+
+#[derive(Copy, Debug, Hash, Eq, PartialEq, Clone)]
+pub struct UniqueTypeId(ast::Name);
+
+// The TypeMap is where the CrateDebugContext holds the type metadata nodes
+// created so far. The metadata nodes are indexed by UniqueTypeId, and, for
+// faster lookup, also by Ty. The TypeMap is responsible for creating
+// UniqueTypeIds.
+pub struct TypeMap<'tcx> {
+ // The UniqueTypeIds created so far
+ unique_id_interner: Interner<Rc<String>>,
+ // A map from UniqueTypeId to debuginfo metadata for that type. This is a 1:1 mapping.
+ unique_id_to_metadata: FnvHashMap<UniqueTypeId, DIType>,
+ // A map from types to debuginfo metadata. This is a N:1 mapping.
+ type_to_metadata: FnvHashMap<Ty<'tcx>, DIType>,
+ // A map from types to UniqueTypeId. This is a N:1 mapping.
+ type_to_unique_id: FnvHashMap<Ty<'tcx>, UniqueTypeId>
+}
+
+impl<'tcx> TypeMap<'tcx> {
+ pub fn new() -> TypeMap<'tcx> {
+ TypeMap {
+ unique_id_interner: Interner::new(),
+ type_to_metadata: FnvHashMap(),
+ unique_id_to_metadata: FnvHashMap(),
+ type_to_unique_id: FnvHashMap(),
+ }
+ }
+
+ // Adds a Ty to metadata mapping to the TypeMap. The method will fail if
+ // the mapping already exists.
+ fn register_type_with_metadata<'a>(&mut self,
+ cx: &CrateContext<'a, 'tcx>,
+ type_: Ty<'tcx>,
+ metadata: DIType) {
+ if self.type_to_metadata.insert(type_, metadata).is_some() {
+ cx.sess().bug(&format!("Type metadata for Ty '{}' is already in the TypeMap!",
+ ppaux::ty_to_string(cx.tcx(), type_)));
+ }
+ }
+
+ // Adds a UniqueTypeId to metadata mapping to the TypeMap. The method will
+ // fail if the mapping already exists.
+ fn register_unique_id_with_metadata(&mut self,
+ cx: &CrateContext,
+ unique_type_id: UniqueTypeId,
+ metadata: DIType) {
+ if self.unique_id_to_metadata.insert(unique_type_id, metadata).is_some() {
+ let unique_type_id_str = self.get_unique_type_id_as_string(unique_type_id);
+ cx.sess().bug(&format!("Type metadata for unique id '{}' is already in the TypeMap!",
+ &unique_type_id_str[..]));
+ }
+ }
+
+ fn find_metadata_for_type(&self, type_: Ty<'tcx>) -> Option<DIType> {
+ self.type_to_metadata.get(&type_).cloned()
+ }
+
+ fn find_metadata_for_unique_id(&self, unique_type_id: UniqueTypeId) -> Option<DIType> {
+ self.unique_id_to_metadata.get(&unique_type_id).cloned()
+ }
+
+ // Get the string representation of a UniqueTypeId. This method will fail if
+ // the id is unknown.
+ fn get_unique_type_id_as_string(&self, unique_type_id: UniqueTypeId) -> Rc<String> {
+ let UniqueTypeId(interner_key) = unique_type_id;
+ self.unique_id_interner.get(interner_key)
+ }
+
+ // Get the UniqueTypeId for the given type. If the UniqueTypeId for the given
+ // type has been requested before, this is just a table lookup. Otherwise an
+ // ID will be generated and stored for later lookup.
+ fn get_unique_type_id_of_type<'a>(&mut self, cx: &CrateContext<'a, 'tcx>,
+ type_: Ty<'tcx>) -> UniqueTypeId {
+
+ // basic type -> {:name of the type:}
+ // tuple -> {tuple_(:param-uid:)*}
+ // struct -> {struct_:svh: / :node-id:_<(:param-uid:),*> }
+ // enum -> {enum_:svh: / :node-id:_<(:param-uid:),*> }
+ // enum variant -> {variant_:variant-name:_:enum-uid:}
+ // reference (&) -> {& :pointee-uid:}
+ // mut reference (&mut) -> {&mut :pointee-uid:}
+ // ptr (*) -> {* :pointee-uid:}
+ // mut ptr (*mut) -> {*mut :pointee-uid:}
+ // unique ptr (~) -> {~ :pointee-uid:}
+ // @-ptr (@) -> {@ :pointee-uid:}
+ // sized vec ([T; x]) -> {[:size:] :element-uid:}
+ // unsized vec ([T]) -> {[] :element-uid:}
+ // trait (T) -> {trait_:svh: / :node-id:_<(:param-uid:),*> }
+ // closure -> {<unsafe_> <once_> :store-sigil: |(:param-uid:),* <,_...>| -> \
+ // :return-type-uid: : (:bounds:)*}
+ // function -> {<unsafe_> <abi_> fn( (:param-uid:)* <,_...> ) -> \
+ // :return-type-uid:}
+ // unique vec box (~[]) -> {HEAP_VEC_BOX<:pointee-uid:>}
+ // gc box -> {GC_BOX<:pointee-uid:>}
+
+ match self.type_to_unique_id.get(&type_).cloned() {
+ Some(unique_type_id) => return unique_type_id,
+ None => { /* generate one */}
+ };
+
+ let mut unique_type_id = String::with_capacity(256);
+ unique_type_id.push('{');
+
+ match type_.sty {
+ ty::ty_bool |
+ ty::ty_char |
+ ty::ty_str |
+ ty::ty_int(_) |
+ ty::ty_uint(_) |
+ ty::ty_float(_) => {
+ push_debuginfo_type_name(cx, type_, false, &mut unique_type_id);
+ },
+ ty::ty_enum(def_id, substs) => {
+ unique_type_id.push_str("enum ");
+ from_def_id_and_substs(self, cx, def_id, substs, &mut unique_type_id);
+ },
+ ty::ty_struct(def_id, substs) => {
+ unique_type_id.push_str("struct ");
+ from_def_id_and_substs(self, cx, def_id, substs, &mut unique_type_id);
+ },
+ ty::ty_tup(ref component_types) if component_types.is_empty() => {
+ push_debuginfo_type_name(cx, type_, false, &mut unique_type_id);
+ },
+ ty::ty_tup(ref component_types) => {
+ unique_type_id.push_str("tuple ");
+ for &component_type in component_types {
+ let component_type_id =
+ self.get_unique_type_id_of_type(cx, component_type);
+ let component_type_id =
+ self.get_unique_type_id_as_string(component_type_id);
+ unique_type_id.push_str(&component_type_id[..]);
+ }
+ },
+ ty::ty_uniq(inner_type) => {
+ unique_type_id.push('~');
+ let inner_type_id = self.get_unique_type_id_of_type(cx, inner_type);
+ let inner_type_id = self.get_unique_type_id_as_string(inner_type_id);
+ unique_type_id.push_str(&inner_type_id[..]);
+ },
+ ty::ty_ptr(ty::mt { ty: inner_type, mutbl } ) => {
+ unique_type_id.push('*');
+ if mutbl == ast::MutMutable {
+ unique_type_id.push_str("mut");
+ }
+
+ let inner_type_id = self.get_unique_type_id_of_type(cx, inner_type);
+ let inner_type_id = self.get_unique_type_id_as_string(inner_type_id);
+ unique_type_id.push_str(&inner_type_id[..]);
+ },
+ ty::ty_rptr(_, ty::mt { ty: inner_type, mutbl }) => {
+ unique_type_id.push('&');
+ if mutbl == ast::MutMutable {
+ unique_type_id.push_str("mut");
+ }
+
+ let inner_type_id = self.get_unique_type_id_of_type(cx, inner_type);
+ let inner_type_id = self.get_unique_type_id_as_string(inner_type_id);
+ unique_type_id.push_str(&inner_type_id[..]);
+ },
+ ty::ty_vec(inner_type, optional_length) => {
+ match optional_length {
+ Some(len) => {
+ unique_type_id.push_str(&format!("[{}]", len));
+ }
+ None => {
+ unique_type_id.push_str("[]");
+ }
+ };
+
+ let inner_type_id = self.get_unique_type_id_of_type(cx, inner_type);
+ let inner_type_id = self.get_unique_type_id_as_string(inner_type_id);
+ unique_type_id.push_str(&inner_type_id[..]);
+ },
+ ty::ty_trait(ref trait_data) => {
+ unique_type_id.push_str("trait ");
+
+ let principal =
+ ty::erase_late_bound_regions(cx.tcx(),
+ &trait_data.principal);
+
+ from_def_id_and_substs(self,
+ cx,
+ principal.def_id,
+ principal.substs,
+ &mut unique_type_id);
+ },
+ ty::ty_bare_fn(_, &ty::BareFnTy{ unsafety, abi, ref sig } ) => {
+ if unsafety == ast::Unsafety::Unsafe {
+ unique_type_id.push_str("unsafe ");
+ }
+
+ unique_type_id.push_str(abi.name());
+
+ unique_type_id.push_str(" fn(");
+
+ let sig = ty::erase_late_bound_regions(cx.tcx(), sig);
+
+ for ¶meter_type in &sig.inputs {
+ let parameter_type_id =
+ self.get_unique_type_id_of_type(cx, parameter_type);
+ let parameter_type_id =
+ self.get_unique_type_id_as_string(parameter_type_id);
+ unique_type_id.push_str(¶meter_type_id[..]);
+ unique_type_id.push(',');
+ }
+
+ if sig.variadic {
+ unique_type_id.push_str("...");
+ }
+
+ unique_type_id.push_str(")->");
+ match sig.output {
+ ty::FnConverging(ret_ty) => {
+ let return_type_id = self.get_unique_type_id_of_type(cx, ret_ty);
+ let return_type_id = self.get_unique_type_id_as_string(return_type_id);
+ unique_type_id.push_str(&return_type_id[..]);
+ }
+ ty::FnDiverging => {
+ unique_type_id.push_str("!");
+ }
+ }
+ },
+ ty::ty_closure(def_id, substs) => {
+ let typer = NormalizingClosureTyper::new(cx.tcx());
+ let closure_ty = typer.closure_type(def_id, substs);
+ self.get_unique_type_id_of_closure_type(cx,
+ closure_ty,
+ &mut unique_type_id);
+ },
+ _ => {
+ cx.sess().bug(&format!("get_unique_type_id_of_type() - unexpected type: {}, {:?}",
+ &ppaux::ty_to_string(cx.tcx(), type_),
+ type_.sty))
+ }
+ };
+
+ unique_type_id.push('}');
+
+ // Trim to size before storing permanently
+ unique_type_id.shrink_to_fit();
+
+ let key = self.unique_id_interner.intern(Rc::new(unique_type_id));
+ self.type_to_unique_id.insert(type_, UniqueTypeId(key));
+
+ return UniqueTypeId(key);
+
+ fn from_def_id_and_substs<'a, 'tcx>(type_map: &mut TypeMap<'tcx>,
+ cx: &CrateContext<'a, 'tcx>,
+ def_id: ast::DefId,
+ substs: &subst::Substs<'tcx>,
+ output: &mut String) {
+ // First, find out the 'real' def_id of the type. Items inlined from
+ // other crates have to be mapped back to their source.
+ let source_def_id = if def_id.krate == ast::LOCAL_CRATE {
+ match cx.external_srcs().borrow().get(&def_id.node).cloned() {
+ Some(source_def_id) => {
+ // The given def_id identifies the inlined copy of a
+ // type definition, let's take the source of the copy.
+ source_def_id
+ }
+ None => def_id
+ }
+ } else {
+ def_id
+ };
+
+ // Get the crate hash as first part of the identifier.
+ let crate_hash = if source_def_id.krate == ast::LOCAL_CRATE {
+ cx.link_meta().crate_hash.clone()
+ } else {
+ cx.sess().cstore.get_crate_hash(source_def_id.krate)
+ };
+
+ output.push_str(crate_hash.as_str());
+ output.push_str("/");
+ output.push_str(&format!("{:x}", def_id.node));
+
+ // Maybe check that there is no self type here.
+
+ let tps = substs.types.get_slice(subst::TypeSpace);
+ if !tps.is_empty() {
+ output.push('<');
+
+ for &type_parameter in tps {
+ let param_type_id =
+ type_map.get_unique_type_id_of_type(cx, type_parameter);
+ let param_type_id =
+ type_map.get_unique_type_id_as_string(param_type_id);
+ output.push_str(¶m_type_id[..]);
+ output.push(',');
+ }
+
+ output.push('>');
+ }
+ }
+ }
+
+ fn get_unique_type_id_of_closure_type<'a>(&mut self,
+ cx: &CrateContext<'a, 'tcx>,
+ closure_ty: ty::ClosureTy<'tcx>,
+ unique_type_id: &mut String) {
+ let ty::ClosureTy { unsafety,
+ ref sig,
+ abi: _ } = closure_ty;
+
+ if unsafety == ast::Unsafety::Unsafe {
+ unique_type_id.push_str("unsafe ");
+ }
+
+ unique_type_id.push_str("|");
+
+ let sig = ty::erase_late_bound_regions(cx.tcx(), sig);
+
+ for ¶meter_type in &sig.inputs {
+ let parameter_type_id =
+ self.get_unique_type_id_of_type(cx, parameter_type);
+ let parameter_type_id =
+ self.get_unique_type_id_as_string(parameter_type_id);
+ unique_type_id.push_str(¶meter_type_id[..]);
+ unique_type_id.push(',');
+ }
+
+ if sig.variadic {
+ unique_type_id.push_str("...");
+ }
+
+ unique_type_id.push_str("|->");
+
+ match sig.output {
+ ty::FnConverging(ret_ty) => {
+ let return_type_id = self.get_unique_type_id_of_type(cx, ret_ty);
+ let return_type_id = self.get_unique_type_id_as_string(return_type_id);
+ unique_type_id.push_str(&return_type_id[..]);
+ }
+ ty::FnDiverging => {
+ unique_type_id.push_str("!");
+ }
+ }
+ }
+
+ // Get the UniqueTypeId for an enum variant. Enum variants are not really
+ // types of their own, so they need special handling. We still need a
+ // UniqueTypeId for them, since to debuginfo they *are* real types.
+ fn get_unique_type_id_of_enum_variant<'a>(&mut self,
+ cx: &CrateContext<'a, 'tcx>,
+ enum_type: Ty<'tcx>,
+ variant_name: &str)
+ -> UniqueTypeId {
+ let enum_type_id = self.get_unique_type_id_of_type(cx, enum_type);
+ let enum_variant_type_id = format!("{}::{}",
+ &self.get_unique_type_id_as_string(enum_type_id),
+ variant_name);
+ let interner_key = self.unique_id_interner.intern(Rc::new(enum_variant_type_id));
+ UniqueTypeId(interner_key)
+ }
+}
+
+// A description of some recursive type. It can either be already finished (as
+// with FinalMetadata) or it is not yet finished, but contains all information
+// needed to generate the missing parts of the description. See the
+// documentation section on Recursive Types at the top of this file for more
+// information.
+enum RecursiveTypeDescription<'tcx> {
+ UnfinishedMetadata {
+ unfinished_type: Ty<'tcx>,
+ unique_type_id: UniqueTypeId,
+ metadata_stub: DICompositeType,
+ llvm_type: Type,
+ member_description_factory: MemberDescriptionFactory<'tcx>,
+ },
+ FinalMetadata(DICompositeType)
+}
+
+fn create_and_register_recursive_type_forward_declaration<'a, 'tcx>(
+ cx: &CrateContext<'a, 'tcx>,
+ unfinished_type: Ty<'tcx>,
+ unique_type_id: UniqueTypeId,
+ metadata_stub: DICompositeType,
+ llvm_type: Type,
+ member_description_factory: MemberDescriptionFactory<'tcx>)
+ -> RecursiveTypeDescription<'tcx> {
+
+ // Insert the stub into the TypeMap in order to allow for recursive references
+ let mut type_map = debug_context(cx).type_map.borrow_mut();
+ type_map.register_unique_id_with_metadata(cx, unique_type_id, metadata_stub);
+ type_map.register_type_with_metadata(cx, unfinished_type, metadata_stub);
+
+ UnfinishedMetadata {
+ unfinished_type: unfinished_type,
+ unique_type_id: unique_type_id,
+ metadata_stub: metadata_stub,
+ llvm_type: llvm_type,
+ member_description_factory: member_description_factory,
+ }
+}
+
+impl<'tcx> RecursiveTypeDescription<'tcx> {
+ // Finishes up the description of the type in question (mostly by providing
+ // descriptions of the fields of the given type) and returns the final type
+ // metadata.
+ fn finalize<'a>(&self, cx: &CrateContext<'a, 'tcx>) -> MetadataCreationResult {
+ match *self {
+ FinalMetadata(metadata) => MetadataCreationResult::new(metadata, false),
+ UnfinishedMetadata {
+ unfinished_type,
+ unique_type_id,
+ metadata_stub,
+ llvm_type,
+ ref member_description_factory,
+ ..
+ } => {
+ // Make sure that we have a forward declaration of the type in
+ // the TypeMap so that recursive references are possible. This
+ // will always be the case if the RecursiveTypeDescription has
+ // been properly created through the
+ // create_and_register_recursive_type_forward_declaration()
+ // function.
+ {
+ let type_map = debug_context(cx).type_map.borrow();
+ if type_map.find_metadata_for_unique_id(unique_type_id).is_none() ||
+ type_map.find_metadata_for_type(unfinished_type).is_none() {
+ cx.sess().bug(&format!("Forward declaration of potentially recursive type \
+ '{}' was not found in TypeMap!",
+ ppaux::ty_to_string(cx.tcx(), unfinished_type))
+ );
+ }
+ }
+
+ // ... then create the member descriptions ...
+ let member_descriptions =
+ member_description_factory.create_member_descriptions(cx);
+
+ // ... and attach them to the stub to complete it.
+ set_members_of_composite_type(cx,
+ metadata_stub,
+ llvm_type,
+ &member_descriptions[..]);
+ return MetadataCreationResult::new(metadata_stub, true);
+ }
+ }
+ }
+}
+
+// Returns from the enclosing function if the type metadata with the given
+// unique id can be found in the type map
+macro_rules! return_if_metadata_created_in_meantime {
+ ($cx: expr, $unique_type_id: expr) => (
+ match debug_context($cx).type_map
+ .borrow()
+ .find_metadata_for_unique_id($unique_type_id) {
+ Some(metadata) => return MetadataCreationResult::new(metadata, true),
+ None => { /* proceed normally */ }
+ };
+ )
+}
+
+fn fixed_vec_metadata<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
+ unique_type_id: UniqueTypeId,
+ element_type: Ty<'tcx>,
+ len: Option<u64>,
+ span: Span)
+ -> MetadataCreationResult {
+ let element_type_metadata = type_metadata(cx, element_type, span);
+
+ return_if_metadata_created_in_meantime!(cx, unique_type_id);
+
+ let element_llvm_type = type_of::type_of(cx, element_type);
+ let (element_type_size, element_type_align) = size_and_align_of(cx, element_llvm_type);
+
+ let (array_size_in_bytes, upper_bound) = match len {
+ Some(len) => (element_type_size * len, len as c_longlong),
+ None => (0, -1)
+ };
+
+ let subrange = unsafe {
+ llvm::LLVMDIBuilderGetOrCreateSubrange(DIB(cx), 0, upper_bound)
+ };
+
+ let subscripts = create_DIArray(DIB(cx), &[subrange]);
+ let metadata = unsafe {
+ llvm::LLVMDIBuilderCreateArrayType(
+ DIB(cx),
+ bytes_to_bits(array_size_in_bytes),
+ bytes_to_bits(element_type_align),
+ element_type_metadata,
+ subscripts)
+ };
+
+ return MetadataCreationResult::new(metadata, false);
+}
+
+fn vec_slice_metadata<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
+ vec_type: Ty<'tcx>,
+ element_type: Ty<'tcx>,
+ unique_type_id: UniqueTypeId,
+ span: Span)
+ -> MetadataCreationResult {
+ let data_ptr_type = ty::mk_ptr(cx.tcx(), ty::mt {
+ ty: element_type,
+ mutbl: ast::MutImmutable
+ });
+
+ let element_type_metadata = type_metadata(cx, data_ptr_type, span);
+
+ return_if_metadata_created_in_meantime!(cx, unique_type_id);
+
+ let slice_llvm_type = type_of::type_of(cx, vec_type);
+ let slice_type_name = compute_debuginfo_type_name(cx, vec_type, true);
+
+ let member_llvm_types = slice_llvm_type.field_types();
+ assert!(slice_layout_is_correct(cx,
+ &member_llvm_types[..],
+ element_type));
+ let member_descriptions = [
+ MemberDescription {
+ name: "data_ptr".to_string(),
+ llvm_type: member_llvm_types[0],
+ type_metadata: element_type_metadata,
+ offset: ComputedMemberOffset,
+ flags: FLAGS_NONE
+ },
+ MemberDescription {
+ name: "length".to_string(),
+ llvm_type: member_llvm_types[1],
+ type_metadata: type_metadata(cx, cx.tcx().types.usize, span),
+ offset: ComputedMemberOffset,
+ flags: FLAGS_NONE
+ },
+ ];
+
+ assert!(member_descriptions.len() == member_llvm_types.len());
+
+ let loc = span_start(cx, span);
+ let file_metadata = file_metadata(cx, &loc.file.name);
+
+ let metadata = composite_type_metadata(cx,
+ slice_llvm_type,
+ &slice_type_name[..],
+ unique_type_id,
+ &member_descriptions,
+ UNKNOWN_SCOPE_METADATA,
+ file_metadata,
+ span);
+ return MetadataCreationResult::new(metadata, false);
+
+ fn slice_layout_is_correct<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
+ member_llvm_types: &[Type],
+ element_type: Ty<'tcx>)
+ -> bool {
+ member_llvm_types.len() == 2 &&
+ member_llvm_types[0] == type_of::type_of(cx, element_type).ptr_to() &&
+ member_llvm_types[1] == cx.int_type()
+ }
+}
+
+fn subroutine_type_metadata<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
+ unique_type_id: UniqueTypeId,
+ signature: &ty::PolyFnSig<'tcx>,
+ span: Span)
+ -> MetadataCreationResult
+{
+ let signature = ty::erase_late_bound_regions(cx.tcx(), signature);
+
+ let mut signature_metadata: Vec<DIType> = Vec::with_capacity(signature.inputs.len() + 1);
+
+ // return type
+ signature_metadata.push(match signature.output {
+ ty::FnConverging(ret_ty) => match ret_ty.sty {
+ ty::ty_tup(ref tys) if tys.is_empty() => ptr::null_mut(),
+ _ => type_metadata(cx, ret_ty, span)
+ },
+ ty::FnDiverging => diverging_type_metadata(cx)
+ });
+
+ // regular arguments
+ for &argument_type in &signature.inputs {
+ signature_metadata.push(type_metadata(cx, argument_type, span));
+ }
+
+ return_if_metadata_created_in_meantime!(cx, unique_type_id);
+
+ return MetadataCreationResult::new(
+ unsafe {
+ llvm::LLVMDIBuilderCreateSubroutineType(
+ DIB(cx),
+ UNKNOWN_FILE_METADATA,
+ create_DIArray(DIB(cx), &signature_metadata[..]))
+ },
+ false);
+}
+
+// FIXME(1563) This is all a bit of a hack because 'trait pointer' is an ill-
+// defined concept. For the case of an actual trait pointer (i.e., Box<Trait>,
+// &Trait), trait_object_type should be the whole thing (e.g, Box<Trait>) and
+// trait_type should be the actual trait (e.g., Trait). Where the trait is part
+// of a DST struct, there is no trait_object_type and the results of this
+// function will be a little bit weird.
+fn trait_pointer_metadata<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
+ trait_type: Ty<'tcx>,
+ trait_object_type: Option<Ty<'tcx>>,
+ unique_type_id: UniqueTypeId)
+ -> DIType {
+ // The implementation provided here is a stub. It makes sure that the trait
+ // type is assigned the correct name, size, namespace, and source location.
+ // But it does not describe the trait's methods.
+
+ let def_id = match trait_type.sty {
+ ty::ty_trait(ref data) => data.principal_def_id(),
+ _ => {
+ let pp_type_name = ppaux::ty_to_string(cx.tcx(), trait_type);
+ cx.sess().bug(&format!("debuginfo: Unexpected trait-object type in \
+ trait_pointer_metadata(): {}",
+ &pp_type_name[..]));
+ }
+ };
+
+ let trait_object_type = trait_object_type.unwrap_or(trait_type);
+ let trait_type_name =
+ compute_debuginfo_type_name(cx, trait_object_type, false);
+
+ let (containing_scope, _) = get_namespace_and_span_for_item(cx, def_id);
+
+ let trait_llvm_type = type_of::type_of(cx, trait_object_type);
+
+ composite_type_metadata(cx,
+ trait_llvm_type,
+ &trait_type_name[..],
+ unique_type_id,
+ &[],
+ containing_scope,
+ UNKNOWN_FILE_METADATA,
+ codemap::DUMMY_SP)
+}
+
+pub fn type_metadata<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
+ t: Ty<'tcx>,
+ usage_site_span: Span)
+ -> DIType {
+ // Get the unique type id of this type.
+ let unique_type_id = {
+ let mut type_map = debug_context(cx).type_map.borrow_mut();
+ // First, try to find the type in TypeMap. If we have seen it before, we
+ // can exit early here.
+ match type_map.find_metadata_for_type(t) {
+ Some(metadata) => {
+ return metadata;
+ },
+ None => {
+ // The Ty is not in the TypeMap but maybe we have already seen
+ // an equivalent type (e.g. only differing in region arguments).
+ // In order to find out, generate the unique type id and look
+ // that up.
+ let unique_type_id = type_map.get_unique_type_id_of_type(cx, t);
+ match type_map.find_metadata_for_unique_id(unique_type_id) {
+ Some(metadata) => {
+ // There is already an equivalent type in the TypeMap.
+ // Register this Ty as an alias in the cache and
+ // return the cached metadata.
+ type_map.register_type_with_metadata(cx, t, metadata);
+ return metadata;
+ },
+ None => {
+ // There really is no type metadata for this type, so
+ // proceed by creating it.
+ unique_type_id
+ }
+ }
+ }
+ }
+ };
+
+ debug!("type_metadata: {:?}", t);
+
+ let sty = &t.sty;
+ let MetadataCreationResult { metadata, already_stored_in_typemap } = match *sty {
+ ty::ty_bool |
+ ty::ty_char |
+ ty::ty_int(_) |
+ ty::ty_uint(_) |
+ ty::ty_float(_) => {
+ MetadataCreationResult::new(basic_type_metadata(cx, t), false)
+ }
+ ty::ty_tup(ref elements) if elements.is_empty() => {
+ MetadataCreationResult::new(basic_type_metadata(cx, t), false)
+ }
+ ty::ty_enum(def_id, _) => {
+ prepare_enum_metadata(cx, t, def_id, unique_type_id, usage_site_span).finalize(cx)
+ }
+ ty::ty_vec(typ, len) => {
+ fixed_vec_metadata(cx, unique_type_id, typ, len.map(|x| x as u64), usage_site_span)
+ }
+ ty::ty_str => {
+ fixed_vec_metadata(cx, unique_type_id, cx.tcx().types.i8, None, usage_site_span)
+ }
+ ty::ty_trait(..) => {
+ MetadataCreationResult::new(
+ trait_pointer_metadata(cx, t, None, unique_type_id),
+ false)
+ }
+ ty::ty_uniq(ty) | ty::ty_ptr(ty::mt{ty, ..}) | ty::ty_rptr(_, ty::mt{ty, ..}) => {
+ match ty.sty {
+ ty::ty_vec(typ, None) => {
+ vec_slice_metadata(cx, t, typ, unique_type_id, usage_site_span)
+ }
+ ty::ty_str => {
+ vec_slice_metadata(cx, t, cx.tcx().types.u8, unique_type_id, usage_site_span)
+ }
+ ty::ty_trait(..) => {
+ MetadataCreationResult::new(
+ trait_pointer_metadata(cx, ty, Some(t), unique_type_id),
+ false)
+ }
+ _ => {
+ let pointee_metadata = type_metadata(cx, ty, usage_site_span);
+
+ match debug_context(cx).type_map
+ .borrow()
+ .find_metadata_for_unique_id(unique_type_id) {
+ Some(metadata) => return metadata,
+ None => { /* proceed normally */ }
+ };
+
+ MetadataCreationResult::new(pointer_type_metadata(cx, t, pointee_metadata),
+ false)
+ }
+ }
+ }
+ ty::ty_bare_fn(_, ref barefnty) => {
+ subroutine_type_metadata(cx, unique_type_id, &barefnty.sig, usage_site_span)
+ }
+ ty::ty_closure(def_id, substs) => {
+ let typer = NormalizingClosureTyper::new(cx.tcx());
+ let sig = typer.closure_type(def_id, substs).sig;
+ subroutine_type_metadata(cx, unique_type_id, &sig, usage_site_span)
+ }
+ ty::ty_struct(def_id, substs) => {
+ prepare_struct_metadata(cx,
+ t,
+ def_id,
+ substs,
+ unique_type_id,
+ usage_site_span).finalize(cx)
+ }
+ ty::ty_tup(ref elements) => {
+ prepare_tuple_metadata(cx,
+ t,
+ &elements[..],
+ unique_type_id,
+ usage_site_span).finalize(cx)
+ }
+ _ => {
+ cx.sess().bug(&format!("debuginfo: unexpected type in type_metadata: {:?}",
+ sty))
+ }
+ };
+
+ {
+ let mut type_map = debug_context(cx).type_map.borrow_mut();
+
+ if already_stored_in_typemap {
+ // Also make sure that we already have a TypeMap entry entry for the unique type id.
+ let metadata_for_uid = match type_map.find_metadata_for_unique_id(unique_type_id) {
+ Some(metadata) => metadata,
+ None => {
+ let unique_type_id_str =
+ type_map.get_unique_type_id_as_string(unique_type_id);
+ let error_message = format!("Expected type metadata for unique \
+ type id '{}' to already be in \
+ the debuginfo::TypeMap but it \
+ was not. (Ty = {})",
+ &unique_type_id_str[..],
+ ppaux::ty_to_string(cx.tcx(), t));
+ cx.sess().span_bug(usage_site_span, &error_message[..]);
+ }
+ };
+
+ match type_map.find_metadata_for_type(t) {
+ Some(metadata) => {
+ if metadata != metadata_for_uid {
+ let unique_type_id_str =
+ type_map.get_unique_type_id_as_string(unique_type_id);
+ let error_message = format!("Mismatch between Ty and \
+ UniqueTypeId maps in \
+ debuginfo::TypeMap. \
+ UniqueTypeId={}, Ty={}",
+ &unique_type_id_str[..],
+ ppaux::ty_to_string(cx.tcx(), t));
+ cx.sess().span_bug(usage_site_span, &error_message[..]);
+ }
+ }
+ None => {
+ type_map.register_type_with_metadata(cx, t, metadata);
+ }
+ }
+ } else {
+ type_map.register_type_with_metadata(cx, t, metadata);
+ type_map.register_unique_id_with_metadata(cx, unique_type_id, metadata);
+ }
+ }
+
+ metadata
+}
+
+pub fn file_metadata(cx: &CrateContext, full_path: &str) -> DIFile {
+ match debug_context(cx).created_files.borrow().get(full_path) {
+ Some(file_metadata) => return *file_metadata,
+ None => ()
+ }
+
+ debug!("file_metadata: {}", full_path);
+
+ // FIXME (#9639): This needs to handle non-utf8 paths
+ let work_dir = cx.sess().working_dir.to_str().unwrap();
+ let file_name =
+ if full_path.starts_with(work_dir) {
+ &full_path[work_dir.len() + 1..full_path.len()]
+ } else {
+ full_path
+ };
+
+ let file_name = CString::new(file_name).unwrap();
+ let work_dir = CString::new(work_dir).unwrap();
+ let file_metadata = unsafe {
+ llvm::LLVMDIBuilderCreateFile(DIB(cx), file_name.as_ptr(),
+ work_dir.as_ptr())
+ };
+
+ let mut created_files = debug_context(cx).created_files.borrow_mut();
+ created_files.insert(full_path.to_string(), file_metadata);
+ return file_metadata;
+}
+
+/// Finds the scope metadata node for the given AST node.
+pub fn scope_metadata(fcx: &FunctionContext,
+ node_id: ast::NodeId,
+ error_reporting_span: Span)
+ -> DIScope {
+ let scope_map = &fcx.debug_context
+ .get_ref(fcx.ccx, error_reporting_span)
+ .scope_map;
+ match scope_map.borrow().get(&node_id).cloned() {
+ Some(scope_metadata) => scope_metadata,
+ None => {
+ let node = fcx.ccx.tcx().map.get(node_id);
+
+ fcx.ccx.sess().span_bug(error_reporting_span,
+ &format!("debuginfo: Could not find scope info for node {:?}",
+ node));
+ }
+ }
+}
+
+fn diverging_type_metadata(cx: &CrateContext) -> DIType {
+ unsafe {
+ llvm::LLVMDIBuilderCreateBasicType(
+ DIB(cx),
+ "!\0".as_ptr() as *const _,
+ bytes_to_bits(0),
+ bytes_to_bits(0),
+ DW_ATE_unsigned)
+ }
+}
+
+fn basic_type_metadata<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
+ t: Ty<'tcx>) -> DIType {
+
+ debug!("basic_type_metadata: {:?}", t);
+
+ let (name, encoding) = match t.sty {
+ ty::ty_tup(ref elements) if elements.is_empty() =>
+ ("()".to_string(), DW_ATE_unsigned),
+ ty::ty_bool => ("bool".to_string(), DW_ATE_boolean),
+ ty::ty_char => ("char".to_string(), DW_ATE_unsigned_char),
+ ty::ty_int(int_ty) => match int_ty {
+ ast::TyIs => ("isize".to_string(), DW_ATE_signed),
+ ast::TyI8 => ("i8".to_string(), DW_ATE_signed),
+ ast::TyI16 => ("i16".to_string(), DW_ATE_signed),
+ ast::TyI32 => ("i32".to_string(), DW_ATE_signed),
+ ast::TyI64 => ("i64".to_string(), DW_ATE_signed)
+ },
+ ty::ty_uint(uint_ty) => match uint_ty {
+ ast::TyUs => ("usize".to_string(), DW_ATE_unsigned),
+ ast::TyU8 => ("u8".to_string(), DW_ATE_unsigned),
+ ast::TyU16 => ("u16".to_string(), DW_ATE_unsigned),
+ ast::TyU32 => ("u32".to_string(), DW_ATE_unsigned),
+ ast::TyU64 => ("u64".to_string(), DW_ATE_unsigned)
+ },
+ ty::ty_float(float_ty) => match float_ty {
+ ast::TyF32 => ("f32".to_string(), DW_ATE_float),
+ ast::TyF64 => ("f64".to_string(), DW_ATE_float),
+ },
+ _ => cx.sess().bug("debuginfo::basic_type_metadata - t is invalid type")
+ };
+
+ let llvm_type = type_of::type_of(cx, t);
+ let (size, align) = size_and_align_of(cx, llvm_type);
+ let name = CString::new(name).unwrap();
+ let ty_metadata = unsafe {
+ llvm::LLVMDIBuilderCreateBasicType(
+ DIB(cx),
+ name.as_ptr(),
+ bytes_to_bits(size),
+ bytes_to_bits(align),
+ encoding)
+ };
+
+ return ty_metadata;
+}
+
+fn pointer_type_metadata<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
+ pointer_type: Ty<'tcx>,
+ pointee_type_metadata: DIType)
+ -> DIType {
+ let pointer_llvm_type = type_of::type_of(cx, pointer_type);
+ let (pointer_size, pointer_align) = size_and_align_of(cx, pointer_llvm_type);
+ let name = compute_debuginfo_type_name(cx, pointer_type, false);
+ let name = CString::new(name).unwrap();
+ let ptr_metadata = unsafe {
+ llvm::LLVMDIBuilderCreatePointerType(
+ DIB(cx),
+ pointee_type_metadata,
+ bytes_to_bits(pointer_size),
+ bytes_to_bits(pointer_align),
+ name.as_ptr())
+ };
+ return ptr_metadata;
+}
+
+pub fn compile_unit_metadata(cx: &CrateContext) -> DIDescriptor {
+ let work_dir = &cx.sess().working_dir;
+ let compile_unit_name = match cx.sess().local_crate_source_file {
+ None => fallback_path(cx),
+ Some(ref abs_path) => {
+ if abs_path.is_relative() {
+ cx.sess().warn("debuginfo: Invalid path to crate's local root source file!");
+ fallback_path(cx)
+ } else {
+ match abs_path.relative_from(work_dir) {
+ Some(ref p) if p.is_relative() => {
+ if p.starts_with(Path::new("./")) {
+ path2cstr(p)
+ } else {
+ path2cstr(&Path::new(".").join(p))
+ }
+ }
+ _ => fallback_path(cx)
+ }
+ }
+ }
+ };
+
+ debug!("compile_unit_metadata: {:?}", compile_unit_name);
+ let producer = format!("rustc version {}",
+ (option_env!("CFG_VERSION")).expect("CFG_VERSION"));
+
+ let compile_unit_name = compile_unit_name.as_ptr();
+ let work_dir = path2cstr(&work_dir);
+ let producer = CString::new(producer).unwrap();
+ let flags = "\0";
+ let split_name = "\0";
+ return unsafe {
+ llvm::LLVMDIBuilderCreateCompileUnit(
+ debug_context(cx).builder,
+ DW_LANG_RUST,
+ compile_unit_name,
+ work_dir.as_ptr(),
+ producer.as_ptr(),
+ cx.sess().opts.optimize != config::No,
+ flags.as_ptr() as *const _,
+ 0,
+ split_name.as_ptr() as *const _)
+ };
+
+ fn fallback_path(cx: &CrateContext) -> CString {
+ CString::new(cx.link_meta().crate_name.clone()).unwrap()
+ }
+}
+
+struct MetadataCreationResult {
+ metadata: DIType,
+ already_stored_in_typemap: bool
+}
+
+impl MetadataCreationResult {
+ fn new(metadata: DIType, already_stored_in_typemap: bool) -> MetadataCreationResult {
+ MetadataCreationResult {
+ metadata: metadata,
+ already_stored_in_typemap: already_stored_in_typemap
+ }
+ }
+}
+
+enum MemberOffset {
+ FixedMemberOffset { bytes: usize },
+ // For ComputedMemberOffset, the offset is read from the llvm type definition.
+ ComputedMemberOffset
+}
+
+// Description of a type member, which can either be a regular field (as in
+// structs or tuples) or an enum variant.
+struct MemberDescription {
+ name: String,
+ llvm_type: Type,
+ type_metadata: DIType,
+ offset: MemberOffset,
+ flags: c_uint
+}
+
+// A factory for MemberDescriptions. It produces a list of member descriptions
+// for some record-like type. MemberDescriptionFactories are used to defer the
+// creation of type member descriptions in order to break cycles arising from
+// recursive type definitions.
+enum MemberDescriptionFactory<'tcx> {
+ StructMDF(StructMemberDescriptionFactory<'tcx>),
+ TupleMDF(TupleMemberDescriptionFactory<'tcx>),
+ EnumMDF(EnumMemberDescriptionFactory<'tcx>),
+ VariantMDF(VariantMemberDescriptionFactory<'tcx>)
+}
+
+impl<'tcx> MemberDescriptionFactory<'tcx> {
+ fn create_member_descriptions<'a>(&self, cx: &CrateContext<'a, 'tcx>)
+ -> Vec<MemberDescription> {
+ match *self {
+ StructMDF(ref this) => {
+ this.create_member_descriptions(cx)
+ }
+ TupleMDF(ref this) => {
+ this.create_member_descriptions(cx)
+ }
+ EnumMDF(ref this) => {
+ this.create_member_descriptions(cx)
+ }
+ VariantMDF(ref this) => {
+ this.create_member_descriptions(cx)
+ }
+ }
+ }
+}
+
+//=-----------------------------------------------------------------------------
+// Structs
+//=-----------------------------------------------------------------------------
+
+// Creates MemberDescriptions for the fields of a struct
+struct StructMemberDescriptionFactory<'tcx> {
+ fields: Vec<ty::field<'tcx>>,
+ is_simd: bool,
+ span: Span,
+}
+
+impl<'tcx> StructMemberDescriptionFactory<'tcx> {
+ fn create_member_descriptions<'a>(&self, cx: &CrateContext<'a, 'tcx>)
+ -> Vec<MemberDescription> {
+ if self.fields.is_empty() {
+ return Vec::new();
+ }
+
+ let field_size = if self.is_simd {
+ machine::llsize_of_alloc(cx, type_of::type_of(cx, self.fields[0].mt.ty)) as usize
+ } else {
+ 0xdeadbeef
+ };
+
+ self.fields.iter().enumerate().map(|(i, field)| {
+ let name = if field.name == special_idents::unnamed_field.name {
+ format!("__{}", i)
+ } else {
+ token::get_name(field.name).to_string()
+ };
+
+ let offset = if self.is_simd {
+ assert!(field_size != 0xdeadbeef);
+ FixedMemberOffset { bytes: i * field_size }
+ } else {
+ ComputedMemberOffset
+ };
+
+ MemberDescription {
+ name: name,
+ llvm_type: type_of::type_of(cx, field.mt.ty),
+ type_metadata: type_metadata(cx, field.mt.ty, self.span),
+ offset: offset,
+ flags: FLAGS_NONE,
+ }
+ }).collect()
+ }
+}
+
+
+fn prepare_struct_metadata<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
+ struct_type: Ty<'tcx>,
+ def_id: ast::DefId,
+ substs: &subst::Substs<'tcx>,
+ unique_type_id: UniqueTypeId,
+ span: Span)
+ -> RecursiveTypeDescription<'tcx> {
+ let struct_name = compute_debuginfo_type_name(cx, struct_type, false);
+ let struct_llvm_type = type_of::type_of(cx, struct_type);
+
+ let (containing_scope, _) = get_namespace_and_span_for_item(cx, def_id);
+
+ let struct_metadata_stub = create_struct_stub(cx,
+ struct_llvm_type,
+ &struct_name[..],
+ unique_type_id,
+ containing_scope);
+
+ let mut fields = ty::struct_fields(cx.tcx(), def_id, substs);
+
+ // The `Ty` values returned by `ty::struct_fields` can still contain
+ // `ty_projection` variants, so normalize those away.
+ for field in &mut fields {
+ field.mt.ty = monomorphize::normalize_associated_type(cx.tcx(), &field.mt.ty);
+ }
+
+ create_and_register_recursive_type_forward_declaration(
+ cx,
+ struct_type,
+ unique_type_id,
+ struct_metadata_stub,
+ struct_llvm_type,
+ StructMDF(StructMemberDescriptionFactory {
+ fields: fields,
+ is_simd: ty::type_is_simd(cx.tcx(), struct_type),
+ span: span,
+ })
+ )
+}
+
+
+//=-----------------------------------------------------------------------------
+// Tuples
+//=-----------------------------------------------------------------------------
+
+// Creates MemberDescriptions for the fields of a tuple
+struct TupleMemberDescriptionFactory<'tcx> {
+ component_types: Vec<Ty<'tcx>>,
+ span: Span,
+}
+
+impl<'tcx> TupleMemberDescriptionFactory<'tcx> {
+ fn create_member_descriptions<'a>(&self, cx: &CrateContext<'a, 'tcx>)
+ -> Vec<MemberDescription> {
+ self.component_types
+ .iter()
+ .enumerate()
+ .map(|(i, &component_type)| {
+ MemberDescription {
+ name: format!("__{}", i),
+ llvm_type: type_of::type_of(cx, component_type),
+ type_metadata: type_metadata(cx, component_type, self.span),
+ offset: ComputedMemberOffset,
+ flags: FLAGS_NONE,
+ }
+ }).collect()
+ }
+}
+
+fn prepare_tuple_metadata<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
+ tuple_type: Ty<'tcx>,
+ component_types: &[Ty<'tcx>],
+ unique_type_id: UniqueTypeId,
+ span: Span)
+ -> RecursiveTypeDescription<'tcx> {
+ let tuple_name = compute_debuginfo_type_name(cx, tuple_type, false);
+ let tuple_llvm_type = type_of::type_of(cx, tuple_type);
+
+ create_and_register_recursive_type_forward_declaration(
+ cx,
+ tuple_type,
+ unique_type_id,
+ create_struct_stub(cx,
+ tuple_llvm_type,
+ &tuple_name[..],
+ unique_type_id,
+ UNKNOWN_SCOPE_METADATA),
+ tuple_llvm_type,
+ TupleMDF(TupleMemberDescriptionFactory {
+ component_types: component_types.to_vec(),
+ span: span,
+ })
+ )
+}
+
+
+//=-----------------------------------------------------------------------------
+// Enums
+//=-----------------------------------------------------------------------------
+
+// Describes the members of an enum value: An enum is described as a union of
+// structs in DWARF. This MemberDescriptionFactory provides the description for
+// the members of this union; so for every variant of the given enum, this
+// factory will produce one MemberDescription (all with no name and a fixed
+// offset of zero bytes).
+struct EnumMemberDescriptionFactory<'tcx> {
+ enum_type: Ty<'tcx>,
+ type_rep: Rc<adt::Repr<'tcx>>,
+ variants: Rc<Vec<Rc<ty::VariantInfo<'tcx>>>>,
+ discriminant_type_metadata: Option<DIType>,
+ containing_scope: DIScope,
+ file_metadata: DIFile,
+ span: Span,
+}
+
+impl<'tcx> EnumMemberDescriptionFactory<'tcx> {
+ fn create_member_descriptions<'a>(&self, cx: &CrateContext<'a, 'tcx>)
+ -> Vec<MemberDescription> {
+ match *self.type_rep {
+ adt::General(_, ref struct_defs, _) => {
+ let discriminant_info = RegularDiscriminant(self.discriminant_type_metadata
+ .expect(""));
+
+ struct_defs
+ .iter()
+ .enumerate()
+ .map(|(i, struct_def)| {
+ let (variant_type_metadata,
+ variant_llvm_type,
+ member_desc_factory) =
+ describe_enum_variant(cx,
+ self.enum_type,
+ struct_def,
+ &*(*self.variants)[i],
+ discriminant_info,
+ self.containing_scope,
+ self.span);
+
+ let member_descriptions = member_desc_factory
+ .create_member_descriptions(cx);
+
+ set_members_of_composite_type(cx,
+ variant_type_metadata,
+ variant_llvm_type,
+ &member_descriptions[..]);
+ MemberDescription {
+ name: "".to_string(),
+ llvm_type: variant_llvm_type,
+ type_metadata: variant_type_metadata,
+ offset: FixedMemberOffset { bytes: 0 },
+ flags: FLAGS_NONE
+ }
+ }).collect()
+ },
+ adt::Univariant(ref struct_def, _) => {
+ assert!(self.variants.len() <= 1);
+
+ if self.variants.is_empty() {
+ vec![]
+ } else {
+ let (variant_type_metadata,
+ variant_llvm_type,
+ member_description_factory) =
+ describe_enum_variant(cx,
+ self.enum_type,
+ struct_def,
+ &*(*self.variants)[0],
+ NoDiscriminant,
+ self.containing_scope,
+ self.span);
+
+ let member_descriptions =
+ member_description_factory.create_member_descriptions(cx);
+
+ set_members_of_composite_type(cx,
+ variant_type_metadata,
+ variant_llvm_type,
+ &member_descriptions[..]);
+ vec![
+ MemberDescription {
+ name: "".to_string(),
+ llvm_type: variant_llvm_type,
+ type_metadata: variant_type_metadata,
+ offset: FixedMemberOffset { bytes: 0 },
+ flags: FLAGS_NONE
+ }
+ ]
+ }
+ }
+ adt::RawNullablePointer { nndiscr: non_null_variant_index, nnty, .. } => {
+ // As far as debuginfo is concerned, the pointer this enum
+ // represents is still wrapped in a struct. This is to make the
+ // DWARF representation of enums uniform.
+
+ // First create a description of the artificial wrapper struct:
+ let non_null_variant = &(*self.variants)[non_null_variant_index as usize];
+ let non_null_variant_name = token::get_name(non_null_variant.name);
+
+ // The llvm type and metadata of the pointer
+ let non_null_llvm_type = type_of::type_of(cx, nnty);
+ let non_null_type_metadata = type_metadata(cx, nnty, self.span);
+
+ // The type of the artificial struct wrapping the pointer
+ let artificial_struct_llvm_type = Type::struct_(cx,
+ &[non_null_llvm_type],
+ false);
+
+ // For the metadata of the wrapper struct, we need to create a
+ // MemberDescription of the struct's single field.
+ let sole_struct_member_description = MemberDescription {
+ name: match non_null_variant.arg_names {
+ Some(ref names) => token::get_name(names[0]).to_string(),
+ None => "__0".to_string()
+ },
+ llvm_type: non_null_llvm_type,
+ type_metadata: non_null_type_metadata,
+ offset: FixedMemberOffset { bytes: 0 },
+ flags: FLAGS_NONE
+ };
+
+ let unique_type_id = debug_context(cx).type_map
+ .borrow_mut()
+ .get_unique_type_id_of_enum_variant(
+ cx,
+ self.enum_type,
+ &non_null_variant_name);
+
+ // Now we can create the metadata of the artificial struct
+ let artificial_struct_metadata =
+ composite_type_metadata(cx,
+ artificial_struct_llvm_type,
+ &non_null_variant_name,
+ unique_type_id,
+ &[sole_struct_member_description],
+ self.containing_scope,
+ self.file_metadata,
+ codemap::DUMMY_SP);
+
+ // Encode the information about the null variant in the union
+ // member's name.
+ let null_variant_index = (1 - non_null_variant_index) as usize;
+ let null_variant_name = token::get_name((*self.variants)[null_variant_index].name);
+ let union_member_name = format!("RUST$ENCODED$ENUM${}${}",
+ 0,
+ null_variant_name);
+
+ // Finally create the (singleton) list of descriptions of union
+ // members.
+ vec![
+ MemberDescription {
+ name: union_member_name,
+ llvm_type: artificial_struct_llvm_type,
+ type_metadata: artificial_struct_metadata,
+ offset: FixedMemberOffset { bytes: 0 },
+ flags: FLAGS_NONE
+ }
+ ]
+ },
+ adt::StructWrappedNullablePointer { nonnull: ref struct_def,
+ nndiscr,
+ ref discrfield, ..} => {
+ // Create a description of the non-null variant
+ let (variant_type_metadata, variant_llvm_type, member_description_factory) =
+ describe_enum_variant(cx,
+ self.enum_type,
+ struct_def,
+ &*(*self.variants)[nndiscr as usize],
+ OptimizedDiscriminant,
+ self.containing_scope,
+ self.span);
+
+ let variant_member_descriptions =
+ member_description_factory.create_member_descriptions(cx);
+
+ set_members_of_composite_type(cx,
+ variant_type_metadata,
+ variant_llvm_type,
+ &variant_member_descriptions[..]);
+
+ // Encode the information about the null variant in the union
+ // member's name.
+ let null_variant_index = (1 - nndiscr) as usize;
+ let null_variant_name = token::get_name((*self.variants)[null_variant_index].name);
+ let discrfield = discrfield.iter()
+ .skip(1)
+ .map(|x| x.to_string())
+ .collect::<Vec<_>>().connect("$");
+ let union_member_name = format!("RUST$ENCODED$ENUM${}${}",
+ discrfield,
+ null_variant_name);
+
+ // Create the (singleton) list of descriptions of union members.
+ vec![
+ MemberDescription {
+ name: union_member_name,
+ llvm_type: variant_llvm_type,
+ type_metadata: variant_type_metadata,
+ offset: FixedMemberOffset { bytes: 0 },
+ flags: FLAGS_NONE
+ }
+ ]
+ },
+ adt::CEnum(..) => cx.sess().span_bug(self.span, "This should be unreachable.")
+ }
+ }
+}
+
+// Creates MemberDescriptions for the fields of a single enum variant.
+struct VariantMemberDescriptionFactory<'tcx> {
+ args: Vec<(String, Ty<'tcx>)>,
+ discriminant_type_metadata: Option<DIType>,
+ span: Span,
+}
+
+impl<'tcx> VariantMemberDescriptionFactory<'tcx> {
+ fn create_member_descriptions<'a>(&self, cx: &CrateContext<'a, 'tcx>)
+ -> Vec<MemberDescription> {
+ self.args.iter().enumerate().map(|(i, &(ref name, ty))| {
+ MemberDescription {
+ name: name.to_string(),
+ llvm_type: type_of::type_of(cx, ty),
+ type_metadata: match self.discriminant_type_metadata {
+ Some(metadata) if i == 0 => metadata,
+ _ => type_metadata(cx, ty, self.span)
+ },
+ offset: ComputedMemberOffset,
+ flags: FLAGS_NONE
+ }
+ }).collect()
+ }
+}
+
+#[derive(Copy, Clone)]
+enum EnumDiscriminantInfo {
+ RegularDiscriminant(DIType),
+ OptimizedDiscriminant,
+ NoDiscriminant
+}
+
+// Returns a tuple of (1) type_metadata_stub of the variant, (2) the llvm_type
+// of the variant, and (3) a MemberDescriptionFactory for producing the
+// descriptions of the fields of the variant. This is a rudimentary version of a
+// full RecursiveTypeDescription.
+fn describe_enum_variant<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
+ enum_type: Ty<'tcx>,
+ struct_def: &adt::Struct<'tcx>,
+ variant_info: &ty::VariantInfo<'tcx>,
+ discriminant_info: EnumDiscriminantInfo,
+ containing_scope: DIScope,
+ span: Span)
+ -> (DICompositeType, Type, MemberDescriptionFactory<'tcx>) {
+ let variant_llvm_type =
+ Type::struct_(cx, &struct_def.fields
+ .iter()
+ .map(|&t| type_of::type_of(cx, t))
+ .collect::<Vec<_>>()
+ ,
+ struct_def.packed);
+ // Could do some consistency checks here: size, align, field count, discr type
+
+ let variant_name = token::get_name(variant_info.name);
+ let variant_name = &variant_name;
+ let unique_type_id = debug_context(cx).type_map
+ .borrow_mut()
+ .get_unique_type_id_of_enum_variant(
+ cx,
+ enum_type,
+ variant_name);
+
+ let metadata_stub = create_struct_stub(cx,
+ variant_llvm_type,
+ variant_name,
+ unique_type_id,
+ containing_scope);
+
+ // Get the argument names from the enum variant info
+ let mut arg_names: Vec<_> = match variant_info.arg_names {
+ Some(ref names) => {
+ names.iter()
+ .map(|&name| token::get_name(name).to_string())
+ .collect()
+ }
+ None => {
+ variant_info.args
+ .iter()
+ .enumerate()
+ .map(|(i, _)| format!("__{}", i))
+ .collect()
+ }
+ };
+
+ // If this is not a univariant enum, there is also the discriminant field.
+ match discriminant_info {
+ RegularDiscriminant(_) => arg_names.insert(0, "RUST$ENUM$DISR".to_string()),
+ _ => { /* do nothing */ }
+ };
+
+ // Build an array of (field name, field type) pairs to be captured in the factory closure.
+ let args: Vec<(String, Ty)> = arg_names.iter()
+ .zip(struct_def.fields.iter())
+ .map(|(s, &t)| (s.to_string(), t))
+ .collect();
+
+ let member_description_factory =
+ VariantMDF(VariantMemberDescriptionFactory {
+ args: args,
+ discriminant_type_metadata: match discriminant_info {
+ RegularDiscriminant(discriminant_type_metadata) => {
+ Some(discriminant_type_metadata)
+ }
+ _ => None
+ },
+ span: span,
+ });
+
+ (metadata_stub, variant_llvm_type, member_description_factory)
+}
+
+fn prepare_enum_metadata<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
+ enum_type: Ty<'tcx>,
+ enum_def_id: ast::DefId,
+ unique_type_id: UniqueTypeId,
+ span: Span)
+ -> RecursiveTypeDescription<'tcx> {
+ let enum_name = compute_debuginfo_type_name(cx, enum_type, false);
+
+ let (containing_scope, definition_span) = get_namespace_and_span_for_item(cx, enum_def_id);
+ let loc = span_start(cx, definition_span);
+ let file_metadata = file_metadata(cx, &loc.file.name);
+
+ let variants = ty::enum_variants(cx.tcx(), enum_def_id);
+
+ let enumerators_metadata: Vec<DIDescriptor> = variants
+ .iter()
+ .map(|v| {
+ let token = token::get_name(v.name);
+ let name = CString::new(token.as_bytes()).unwrap();
+ unsafe {
+ llvm::LLVMDIBuilderCreateEnumerator(
+ DIB(cx),
+ name.as_ptr(),
+ v.disr_val as u64)
+ }
+ })
+ .collect();
+
+ let discriminant_type_metadata = |inttype| {
+ // We can reuse the type of the discriminant for all monomorphized
+ // instances of an enum because it doesn't depend on any type
+ // parameters. The def_id, uniquely identifying the enum's polytype acts
+ // as key in this cache.
+ let cached_discriminant_type_metadata = debug_context(cx).created_enum_disr_types
+ .borrow()
+ .get(&enum_def_id).cloned();
+ match cached_discriminant_type_metadata {
+ Some(discriminant_type_metadata) => discriminant_type_metadata,
+ None => {
+ let discriminant_llvm_type = adt::ll_inttype(cx, inttype);
+ let (discriminant_size, discriminant_align) =
+ size_and_align_of(cx, discriminant_llvm_type);
+ let discriminant_base_type_metadata =
+ type_metadata(cx,
+ adt::ty_of_inttype(cx.tcx(), inttype),
+ codemap::DUMMY_SP);
+ let discriminant_name = get_enum_discriminant_name(cx, enum_def_id);
+
+ let name = CString::new(discriminant_name.as_bytes()).unwrap();
+ let discriminant_type_metadata = unsafe {
+ llvm::LLVMDIBuilderCreateEnumerationType(
+ DIB(cx),
+ containing_scope,
+ name.as_ptr(),
+ UNKNOWN_FILE_METADATA,
+ UNKNOWN_LINE_NUMBER,
+ bytes_to_bits(discriminant_size),
+ bytes_to_bits(discriminant_align),
+ create_DIArray(DIB(cx), &enumerators_metadata),
+ discriminant_base_type_metadata)
+ };
+
+ debug_context(cx).created_enum_disr_types
+ .borrow_mut()
+ .insert(enum_def_id, discriminant_type_metadata);
+
+ discriminant_type_metadata
+ }
+ }
+ };
+
+ let type_rep = adt::represent_type(cx, enum_type);
+
+ let discriminant_type_metadata = match *type_rep {
+ adt::CEnum(inttype, _, _) => {
+ return FinalMetadata(discriminant_type_metadata(inttype))
+ },
+ adt::RawNullablePointer { .. } |
+ adt::StructWrappedNullablePointer { .. } |
+ adt::Univariant(..) => None,
+ adt::General(inttype, _, _) => Some(discriminant_type_metadata(inttype)),
+ };
+
+ let enum_llvm_type = type_of::type_of(cx, enum_type);
+ let (enum_type_size, enum_type_align) = size_and_align_of(cx, enum_llvm_type);
+
+ let unique_type_id_str = debug_context(cx)
+ .type_map
+ .borrow()
+ .get_unique_type_id_as_string(unique_type_id);
+
+ let enum_name = CString::new(enum_name).unwrap();
+ let unique_type_id_str = CString::new(unique_type_id_str.as_bytes()).unwrap();
+ let enum_metadata = unsafe {
+ llvm::LLVMDIBuilderCreateUnionType(
+ DIB(cx),
+ containing_scope,
+ enum_name.as_ptr(),
+ UNKNOWN_FILE_METADATA,
+ UNKNOWN_LINE_NUMBER,
+ bytes_to_bits(enum_type_size),
+ bytes_to_bits(enum_type_align),
+ 0, // Flags
+ ptr::null_mut(),
+ 0, // RuntimeLang
+ unique_type_id_str.as_ptr())
+ };
+
+ return create_and_register_recursive_type_forward_declaration(
+ cx,
+ enum_type,
+ unique_type_id,
+ enum_metadata,
+ enum_llvm_type,
+ EnumMDF(EnumMemberDescriptionFactory {
+ enum_type: enum_type,
+ type_rep: type_rep.clone(),
+ variants: variants,
+ discriminant_type_metadata: discriminant_type_metadata,
+ containing_scope: containing_scope,
+ file_metadata: file_metadata,
+ span: span,
+ }),
+ );
+
+ fn get_enum_discriminant_name(cx: &CrateContext,
+ def_id: ast::DefId)
+ -> token::InternedString {
+ let name = if def_id.krate == ast::LOCAL_CRATE {
+ cx.tcx().map.get_path_elem(def_id.node).name()
+ } else {
+ csearch::get_item_path(cx.tcx(), def_id).last().unwrap().name()
+ };
+
+ token::get_name(name)
+ }
+}
+
+/// Creates debug information for a composite type, that is, anything that
+/// results in a LLVM struct.
+///
+/// Examples of Rust types to use this are: structs, tuples, boxes, vecs, and enums.
+fn composite_type_metadata(cx: &CrateContext,
+ composite_llvm_type: Type,
+ composite_type_name: &str,
+ composite_type_unique_id: UniqueTypeId,
+ member_descriptions: &[MemberDescription],
+ containing_scope: DIScope,
+
+ // Ignore source location information as long as it
+ // can't be reconstructed for non-local crates.
+ _file_metadata: DIFile,
+ _definition_span: Span)
+ -> DICompositeType {
+ // Create the (empty) struct metadata node ...
+ let composite_type_metadata = create_struct_stub(cx,
+ composite_llvm_type,
+ composite_type_name,
+ composite_type_unique_id,
+ containing_scope);
+ // ... and immediately create and add the member descriptions.
+ set_members_of_composite_type(cx,
+ composite_type_metadata,
+ composite_llvm_type,
+ member_descriptions);
+
+ return composite_type_metadata;
+}
+
+fn set_members_of_composite_type(cx: &CrateContext,
+ composite_type_metadata: DICompositeType,
+ composite_llvm_type: Type,
+ member_descriptions: &[MemberDescription]) {
+ // In some rare cases LLVM metadata uniquing would lead to an existing type
+ // description being used instead of a new one created in
+ // create_struct_stub. This would cause a hard to trace assertion in
+ // DICompositeType::SetTypeArray(). The following check makes sure that we
+ // get a better error message if this should happen again due to some
+ // regression.
+ {
+ let mut composite_types_completed =
+ debug_context(cx).composite_types_completed.borrow_mut();
+ if composite_types_completed.contains(&composite_type_metadata) {
+ cx.sess().bug("debuginfo::set_members_of_composite_type() - \
+ Already completed forward declaration re-encountered.");
+ } else {
+ composite_types_completed.insert(composite_type_metadata);
+ }
+ }
+
+ let member_metadata: Vec<DIDescriptor> = member_descriptions
+ .iter()
+ .enumerate()
+ .map(|(i, member_description)| {
+ let (member_size, member_align) = size_and_align_of(cx, member_description.llvm_type);
+ let member_offset = match member_description.offset {
+ FixedMemberOffset { bytes } => bytes as u64,
+ ComputedMemberOffset => machine::llelement_offset(cx, composite_llvm_type, i)
+ };
+
+ let member_name = member_description.name.as_bytes();
+ let member_name = CString::new(member_name).unwrap();
+ unsafe {
+ llvm::LLVMDIBuilderCreateMemberType(
+ DIB(cx),
+ composite_type_metadata,
+ member_name.as_ptr(),
+ UNKNOWN_FILE_METADATA,
+ UNKNOWN_LINE_NUMBER,
+ bytes_to_bits(member_size),
+ bytes_to_bits(member_align),
+ bytes_to_bits(member_offset),
+ member_description.flags,
+ member_description.type_metadata)
+ }
+ })
+ .collect();
+
+ unsafe {
+ let type_array = create_DIArray(DIB(cx), &member_metadata[..]);
+ llvm::LLVMDICompositeTypeSetTypeArray(DIB(cx), composite_type_metadata, type_array);
+ }
+}
+
+// A convenience wrapper around LLVMDIBuilderCreateStructType(). Does not do any
+// caching, does not add any fields to the struct. This can be done later with
+// set_members_of_composite_type().
+fn create_struct_stub(cx: &CrateContext,
+ struct_llvm_type: Type,
+ struct_type_name: &str,
+ unique_type_id: UniqueTypeId,
+ containing_scope: DIScope)
+ -> DICompositeType {
+ let (struct_size, struct_align) = size_and_align_of(cx, struct_llvm_type);
+
+ let unique_type_id_str = debug_context(cx).type_map
+ .borrow()
+ .get_unique_type_id_as_string(unique_type_id);
+ let name = CString::new(struct_type_name).unwrap();
+ let unique_type_id = CString::new(unique_type_id_str.as_bytes()).unwrap();
+ let metadata_stub = unsafe {
+ // LLVMDIBuilderCreateStructType() wants an empty array. A null
+ // pointer will lead to hard to trace and debug LLVM assertions
+ // later on in llvm/lib/IR/Value.cpp.
+ let empty_array = create_DIArray(DIB(cx), &[]);
+
+ llvm::LLVMDIBuilderCreateStructType(
+ DIB(cx),
+ containing_scope,
+ name.as_ptr(),
+ UNKNOWN_FILE_METADATA,
+ UNKNOWN_LINE_NUMBER,
+ bytes_to_bits(struct_size),
+ bytes_to_bits(struct_align),
+ 0,
+ ptr::null_mut(),
+ empty_array,
+ 0,
+ ptr::null_mut(),
+ unique_type_id.as_ptr())
+ };
+
+ return metadata_stub;
+}
+
+/// Creates debug information for the given global variable.
+///
+/// Adds the created metadata nodes directly to the crate's IR.
+pub fn create_global_var_metadata(cx: &CrateContext,
+ node_id: ast::NodeId,
+ global: ValueRef) {
+ if cx.dbg_cx().is_none() {
+ return;
+ }
+
+ // Don't create debuginfo for globals inlined from other crates. The other
+ // crate should already contain debuginfo for it. More importantly, the
+ // global might not even exist in un-inlined form anywhere which would lead
+ // to a linker errors.
+ if cx.external_srcs().borrow().contains_key(&node_id) {
+ return;
+ }
+
+ let var_item = cx.tcx().map.get(node_id);
+
+ let (name, span) = match var_item {
+ ast_map::NodeItem(item) => {
+ match item.node {
+ ast::ItemStatic(..) => (item.ident.name, item.span),
+ ast::ItemConst(..) => (item.ident.name, item.span),
+ _ => {
+ cx.sess()
+ .span_bug(item.span,
+ &format!("debuginfo::\
+ create_global_var_metadata() -
+ Captured var-id refers to \
+ unexpected ast_item variant: {:?}",
+ var_item))
+ }
+ }
+ },
+ _ => cx.sess().bug(&format!("debuginfo::create_global_var_metadata() \
+ - Captured var-id refers to unexpected \
+ ast_map variant: {:?}",
+ var_item))
+ };
+
+ let (file_metadata, line_number) = if span != codemap::DUMMY_SP {
+ let loc = span_start(cx, span);
+ (file_metadata(cx, &loc.file.name), loc.line as c_uint)
+ } else {
+ (UNKNOWN_FILE_METADATA, UNKNOWN_LINE_NUMBER)
+ };
+
+ let is_local_to_unit = is_node_local_to_unit(cx, node_id);
+ let variable_type = ty::node_id_to_type(cx.tcx(), node_id);
+ let type_metadata = type_metadata(cx, variable_type, span);
+ let namespace_node = namespace_for_item(cx, ast_util::local_def(node_id));
+ let var_name = token::get_name(name).to_string();
+ let linkage_name =
+ namespace_node.mangled_name_of_contained_item(&var_name[..]);
+ let var_scope = namespace_node.scope;
+
+ let var_name = CString::new(var_name).unwrap();
+ let linkage_name = CString::new(linkage_name).unwrap();
+ unsafe {
+ llvm::LLVMDIBuilderCreateStaticVariable(DIB(cx),
+ var_scope,
+ var_name.as_ptr(),
+ linkage_name.as_ptr(),
+ file_metadata,
+ line_number,
+ type_metadata,
+ is_local_to_unit,
+ global,
+ ptr::null_mut());
+ }
+}
+
+/// Creates debug information for the given local variable.
+///
+/// This function assumes that there's a datum for each pattern component of the
+/// local in `bcx.fcx.lllocals`.
+/// Adds the created metadata nodes directly to the crate's IR.
+pub fn create_local_var_metadata(bcx: Block, local: &ast::Local) {
+ if bcx.unreachable.get() ||
+ fn_should_be_ignored(bcx.fcx) ||
+ bcx.sess().opts.debuginfo != FullDebugInfo {
+ return;
+ }
+
+ let cx = bcx.ccx();
+ let def_map = &cx.tcx().def_map;
+ let locals = bcx.fcx.lllocals.borrow();
+
+ pat_util::pat_bindings(def_map, &*local.pat, |_, node_id, span, var_ident| {
+ let datum = match locals.get(&node_id) {
+ Some(datum) => datum,
+ None => {
+ bcx.sess().span_bug(span,
+ &format!("no entry in lllocals table for {}",
+ node_id));
+ }
+ };
+
+ if unsafe { llvm::LLVMIsAAllocaInst(datum.val) } == ptr::null_mut() {
+ cx.sess().span_bug(span, "debuginfo::create_local_var_metadata() - \
+ Referenced variable location is not an alloca!");
+ }
+
+ let scope_metadata = scope_metadata(bcx.fcx, node_id, span);
+
+ declare_local(bcx,
+ var_ident.node.name,
+ datum.ty,
+ scope_metadata,
+ VariableAccess::DirectVariable { alloca: datum.val },
+ VariableKind::LocalVariable,
+ span);
+ })
+}
+
+/// Creates debug information for a variable captured in a closure.
+///
+/// Adds the created metadata nodes directly to the crate's IR.
+pub fn create_captured_var_metadata<'blk, 'tcx>(bcx: Block<'blk, 'tcx>,
+ node_id: ast::NodeId,
+ env_pointer: ValueRef,
+ env_index: usize,
+ captured_by_ref: bool,
+ span: Span) {
+ if bcx.unreachable.get() ||
+ fn_should_be_ignored(bcx.fcx) ||
+ bcx.sess().opts.debuginfo != FullDebugInfo {
+ return;
+ }
+
+ let cx = bcx.ccx();
+
+ let ast_item = cx.tcx().map.find(node_id);
+
+ let variable_name = match ast_item {
+ None => {
+ cx.sess().span_bug(span, "debuginfo::create_captured_var_metadata: node not found");
+ }
+ Some(ast_map::NodeLocal(pat)) | Some(ast_map::NodeArg(pat)) => {
+ match pat.node {
+ ast::PatIdent(_, ref path1, _) => {
+ path1.node.name
+ }
+ _ => {
+ cx.sess()
+ .span_bug(span,
+ &format!(
+ "debuginfo::create_captured_var_metadata() - \
+ Captured var-id refers to unexpected \
+ ast_map variant: {:?}",
+ ast_item));
+ }
+ }
+ }
+ _ => {
+ cx.sess()
+ .span_bug(span,
+ &format!("debuginfo::create_captured_var_metadata() - \
+ Captured var-id refers to unexpected \
+ ast_map variant: {:?}",
+ ast_item));
+ }
+ };
+
+ let variable_type = common::node_id_type(bcx, node_id);
+ let scope_metadata = bcx.fcx.debug_context.get_ref(cx, span).fn_metadata;
+
+ // env_pointer is the alloca containing the pointer to the environment,
+ // so it's type is **EnvironmentType. In order to find out the type of
+ // the environment we have to "dereference" two times.
+ let llvm_env_data_type = common::val_ty(env_pointer).element_type()
+ .element_type();
+ let byte_offset_of_var_in_env = machine::llelement_offset(cx,
+ llvm_env_data_type,
+ env_index);
+
+ let address_operations = unsafe {
+ [llvm::LLVMDIBuilderCreateOpDeref(),
+ llvm::LLVMDIBuilderCreateOpPlus(),
+ byte_offset_of_var_in_env as i64,
+ llvm::LLVMDIBuilderCreateOpDeref()]
+ };
+
+ let address_op_count = if captured_by_ref {
+ address_operations.len()
+ } else {
+ address_operations.len() - 1
+ };
+
+ let variable_access = VariableAccess::IndirectVariable {
+ alloca: env_pointer,
+ address_operations: &address_operations[..address_op_count]
+ };
+
+ declare_local(bcx,
+ variable_name,
+ variable_type,
+ scope_metadata,
+ variable_access,
+ VariableKind::CapturedVariable,
+ span);
+}
+
+/// Creates debug information for a local variable introduced in the head of a
+/// match-statement arm.
+///
+/// Adds the created metadata nodes directly to the crate's IR.
+pub fn create_match_binding_metadata<'blk, 'tcx>(bcx: Block<'blk, 'tcx>,
+ variable_name: ast::Name,
+ binding: BindingInfo<'tcx>) {
+ if bcx.unreachable.get() ||
+ fn_should_be_ignored(bcx.fcx) ||
+ bcx.sess().opts.debuginfo != FullDebugInfo {
+ return;
+ }
+
+ let scope_metadata = scope_metadata(bcx.fcx, binding.id, binding.span);
+ let aops = unsafe {
+ [llvm::LLVMDIBuilderCreateOpDeref()]
+ };
+ // Regardless of the actual type (`T`) we're always passed the stack slot
+ // (alloca) for the binding. For ByRef bindings that's a `T*` but for ByMove
+ // bindings we actually have `T**`. So to get the actual variable we need to
+ // dereference once more. For ByCopy we just use the stack slot we created
+ // for the binding.
+ let var_access = match binding.trmode {
+ TrByCopy(llbinding) => VariableAccess::DirectVariable {
+ alloca: llbinding
+ },
+ TrByMove => VariableAccess::IndirectVariable {
+ alloca: binding.llmatch,
+ address_operations: &aops
+ },
+ TrByRef => VariableAccess::DirectVariable {
+ alloca: binding.llmatch
+ }
+ };
+
+ declare_local(bcx,
+ variable_name,
+ binding.ty,
+ scope_metadata,
+ var_access,
+ VariableKind::LocalVariable,
+ binding.span);
+}
+
+/// Creates debug information for the given function argument.
+///
+/// This function assumes that there's a datum for each pattern component of the
+/// argument in `bcx.fcx.lllocals`.
+/// Adds the created metadata nodes directly to the crate's IR.
+pub fn create_argument_metadata(bcx: Block, arg: &ast::Arg) {
+ if bcx.unreachable.get() ||
+ fn_should_be_ignored(bcx.fcx) ||
+ bcx.sess().opts.debuginfo != FullDebugInfo {
+ return;
+ }
+
+ let def_map = &bcx.tcx().def_map;
+ let scope_metadata = bcx
+ .fcx
+ .debug_context
+ .get_ref(bcx.ccx(), arg.pat.span)
+ .fn_metadata;
+ let locals = bcx.fcx.lllocals.borrow();
+
+ pat_util::pat_bindings(def_map, &*arg.pat, |_, node_id, span, var_ident| {
+ let datum = match locals.get(&node_id) {
+ Some(v) => v,
+ None => {
+ bcx.sess().span_bug(span,
+ &format!("no entry in lllocals table for {}",
+ node_id));
+ }
+ };
+
+ if unsafe { llvm::LLVMIsAAllocaInst(datum.val) } == ptr::null_mut() {
+ bcx.sess().span_bug(span, "debuginfo::create_argument_metadata() - \
+ Referenced variable location is not an alloca!");
+ }
+
+ let argument_index = {
+ let counter = &bcx
+ .fcx
+ .debug_context
+ .get_ref(bcx.ccx(), span)
+ .argument_counter;
+ let argument_index = counter.get();
+ counter.set(argument_index + 1);
+ argument_index
+ };
+
+ declare_local(bcx,
+ var_ident.node.name,
+ datum.ty,
+ scope_metadata,
+ VariableAccess::DirectVariable { alloca: datum.val },
+ VariableKind::ArgumentVariable(argument_index),
+ span);
+ })
+}
--- /dev/null
+// Copyright 2012-2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// See doc.rs for documentation.
+mod doc;
+
+use self::VariableAccess::*;
+use self::VariableKind::*;
+
+use self::utils::{DIB, span_start, assert_type_for_node_id, contains_nodebug_attribute,
+ create_DIArray, is_node_local_to_unit};
+use self::namespace::{namespace_for_item, NamespaceTreeNode};
+use self::type_names::compute_debuginfo_type_name;
+use self::metadata::{type_metadata, file_metadata, scope_metadata, TypeMap, compile_unit_metadata};
+use self::source_loc::InternalDebugLocation;
+
+use llvm;
+use llvm::{ModuleRef, ContextRef, ValueRef};
+use llvm::debuginfo::{DIFile, DIType, DIScope, DIBuilderRef, DISubprogram, DIArray,
+ DIDescriptor, FlagPrototyped};
+use middle::subst::{self, Substs};
+use trans::common::{NodeIdAndSpan, CrateContext, FunctionContext, Block};
+use trans;
+use trans::monomorphize;
+use middle::ty::{self, Ty, ClosureTyper};
+use session::config::{self, FullDebugInfo, LimitedDebugInfo, NoDebugInfo};
+use util::nodemap::{DefIdMap, NodeMap, FnvHashMap, FnvHashSet};
+
+use libc::c_uint;
+use std::cell::{Cell, RefCell};
+use std::ffi::CString;
+use std::ptr;
+use std::rc::Rc;
+use syntax::codemap::{Span, Pos};
+use syntax::{ast, codemap, ast_util, ast_map};
+use syntax::parse::token::{self, special_idents};
+
+pub mod gdb;
+mod utils;
+mod namespace;
+mod type_names;
+mod metadata;
+mod create_scope_map;
+mod source_loc;
+
+pub use self::source_loc::set_source_location;
+pub use self::source_loc::clear_source_location;
+pub use self::source_loc::start_emitting_source_locations;
+pub use self::source_loc::get_cleanup_debug_loc_for_ast_node;
+pub use self::source_loc::with_source_location_override;
+pub use self::metadata::create_match_binding_metadata;
+pub use self::metadata::create_argument_metadata;
+pub use self::metadata::create_captured_var_metadata;
+pub use self::metadata::create_global_var_metadata;
+pub use self::metadata::create_local_var_metadata;
+
+#[allow(non_upper_case_globals)]
+const DW_TAG_auto_variable: c_uint = 0x100;
+#[allow(non_upper_case_globals)]
+const DW_TAG_arg_variable: c_uint = 0x101;
+
+/// A context object for maintaining all state needed by the debuginfo module.
+pub struct CrateDebugContext<'tcx> {
+ llcontext: ContextRef,
+ builder: DIBuilderRef,
+ current_debug_location: Cell<InternalDebugLocation>,
+ created_files: RefCell<FnvHashMap<String, DIFile>>,
+ created_enum_disr_types: RefCell<DefIdMap<DIType>>,
+
+ type_map: RefCell<TypeMap<'tcx>>,
+ namespace_map: RefCell<FnvHashMap<Vec<ast::Name>, Rc<NamespaceTreeNode>>>,
+
+ // This collection is used to assert that composite types (structs, enums,
+ // ...) have their members only set once:
+ composite_types_completed: RefCell<FnvHashSet<DIType>>,
+}
+
+impl<'tcx> CrateDebugContext<'tcx> {
+ pub fn new(llmod: ModuleRef) -> CrateDebugContext<'tcx> {
+ debug!("CrateDebugContext::new");
+ let builder = unsafe { llvm::LLVMDIBuilderCreate(llmod) };
+ // DIBuilder inherits context from the module, so we'd better use the same one
+ let llcontext = unsafe { llvm::LLVMGetModuleContext(llmod) };
+ return CrateDebugContext {
+ llcontext: llcontext,
+ builder: builder,
+ current_debug_location: Cell::new(InternalDebugLocation::UnknownLocation),
+ created_files: RefCell::new(FnvHashMap()),
+ created_enum_disr_types: RefCell::new(DefIdMap()),
+ type_map: RefCell::new(TypeMap::new()),
+ namespace_map: RefCell::new(FnvHashMap()),
+ composite_types_completed: RefCell::new(FnvHashSet()),
+ };
+ }
+}
+
+pub enum FunctionDebugContext {
+ RegularContext(Box<FunctionDebugContextData>),
+ DebugInfoDisabled,
+ FunctionWithoutDebugInfo,
+}
+
+impl FunctionDebugContext {
+ fn get_ref<'a>(&'a self,
+ cx: &CrateContext,
+ span: Span)
+ -> &'a FunctionDebugContextData {
+ match *self {
+ FunctionDebugContext::RegularContext(box ref data) => data,
+ FunctionDebugContext::DebugInfoDisabled => {
+ cx.sess().span_bug(span,
+ FunctionDebugContext::debuginfo_disabled_message());
+ }
+ FunctionDebugContext::FunctionWithoutDebugInfo => {
+ cx.sess().span_bug(span,
+ FunctionDebugContext::should_be_ignored_message());
+ }
+ }
+ }
+
+ fn debuginfo_disabled_message() -> &'static str {
+ "debuginfo: Error trying to access FunctionDebugContext although debug info is disabled!"
+ }
+
+ fn should_be_ignored_message() -> &'static str {
+ "debuginfo: Error trying to access FunctionDebugContext for function that should be \
+ ignored by debug info!"
+ }
+}
+
+struct FunctionDebugContextData {
+ scope_map: RefCell<NodeMap<DIScope>>,
+ fn_metadata: DISubprogram,
+ argument_counter: Cell<usize>,
+ source_locations_enabled: Cell<bool>,
+ source_location_override: Cell<bool>,
+}
+
+pub enum VariableAccess<'a> {
+ // The llptr given is an alloca containing the variable's value
+ DirectVariable { alloca: ValueRef },
+ // The llptr given is an alloca containing the start of some pointer chain
+ // leading to the variable's content.
+ IndirectVariable { alloca: ValueRef, address_operations: &'a [i64] }
+}
+
+pub enum VariableKind {
+ ArgumentVariable(usize /*index*/),
+ LocalVariable,
+ CapturedVariable,
+}
+
+/// Create any deferred debug metadata nodes
+pub fn finalize(cx: &CrateContext) {
+ if cx.dbg_cx().is_none() {
+ return;
+ }
+
+ debug!("finalize");
+ let _ = compile_unit_metadata(cx);
+
+ if gdb::needs_gdb_debug_scripts_section(cx) {
+ // Add a .debug_gdb_scripts section to this compile-unit. This will
+ // cause GDB to try and load the gdb_load_rust_pretty_printers.py file,
+ // which activates the Rust pretty printers for binary this section is
+ // contained in.
+ gdb::get_or_insert_gdb_debug_scripts_section_global(cx);
+ }
+
+ unsafe {
+ llvm::LLVMDIBuilderFinalize(DIB(cx));
+ llvm::LLVMDIBuilderDispose(DIB(cx));
+ // Debuginfo generation in LLVM by default uses a higher
+ // version of dwarf than OS X currently understands. We can
+ // instruct LLVM to emit an older version of dwarf, however,
+ // for OS X to understand. For more info see #11352
+ // This can be overridden using --llvm-opts -dwarf-version,N.
+ // Android has the same issue (#22398)
+ if cx.sess().target.target.options.is_like_osx ||
+ cx.sess().target.target.options.is_like_android {
+ llvm::LLVMRustAddModuleFlag(cx.llmod(),
+ "Dwarf Version\0".as_ptr() as *const _,
+ 2)
+ }
+
+ // Prevent bitcode readers from deleting the debug info.
+ let ptr = "Debug Info Version\0".as_ptr();
+ llvm::LLVMRustAddModuleFlag(cx.llmod(), ptr as *const _,
+ llvm::LLVMRustDebugMetadataVersion);
+ };
+}
+
+/// Creates the function-specific debug context.
+///
+/// Returns the FunctionDebugContext for the function which holds state needed
+/// for debug info creation. The function may also return another variant of the
+/// FunctionDebugContext enum which indicates why no debuginfo should be created
+/// for the function.
+pub fn create_function_debug_context<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
+ fn_ast_id: ast::NodeId,
+ param_substs: &Substs<'tcx>,
+ llfn: ValueRef) -> FunctionDebugContext {
+ if cx.sess().opts.debuginfo == NoDebugInfo {
+ return FunctionDebugContext::DebugInfoDisabled;
+ }
+
+ // Clear the debug location so we don't assign them in the function prelude.
+ // Do this here already, in case we do an early exit from this function.
+ source_loc::set_debug_location(cx, InternalDebugLocation::UnknownLocation);
+
+ if fn_ast_id == ast::DUMMY_NODE_ID {
+ // This is a function not linked to any source location, so don't
+ // generate debuginfo for it.
+ return FunctionDebugContext::FunctionWithoutDebugInfo;
+ }
+
+ let empty_generics = ast_util::empty_generics();
+
+ let fnitem = cx.tcx().map.get(fn_ast_id);
+
+ let (name, fn_decl, generics, top_level_block, span, has_path) = match fnitem {
+ ast_map::NodeItem(ref item) => {
+ if contains_nodebug_attribute(&item.attrs) {
+ return FunctionDebugContext::FunctionWithoutDebugInfo;
+ }
+
+ match item.node {
+ ast::ItemFn(ref fn_decl, _, _, ref generics, ref top_level_block) => {
+ (item.ident.name, fn_decl, generics, top_level_block, item.span, true)
+ }
+ _ => {
+ cx.sess().span_bug(item.span,
+ "create_function_debug_context: item bound to non-function");
+ }
+ }
+ }
+ ast_map::NodeImplItem(impl_item) => {
+ match impl_item.node {
+ ast::MethodImplItem(ref sig, ref body) => {
+ if contains_nodebug_attribute(&impl_item.attrs) {
+ return FunctionDebugContext::FunctionWithoutDebugInfo;
+ }
+
+ (impl_item.ident.name,
+ &sig.decl,
+ &sig.generics,
+ body,
+ impl_item.span,
+ true)
+ }
+ _ => {
+ cx.sess().span_bug(impl_item.span,
+ "create_function_debug_context() \
+ called on non-method impl item?!")
+ }
+ }
+ }
+ ast_map::NodeExpr(ref expr) => {
+ match expr.node {
+ ast::ExprClosure(_, ref fn_decl, ref top_level_block) => {
+ let name = format!("fn{}", token::gensym("fn"));
+ let name = token::intern(&name[..]);
+ (name, fn_decl,
+ // This is not quite right. It should actually inherit
+ // the generics of the enclosing function.
+ &empty_generics,
+ top_level_block,
+ expr.span,
+ // Don't try to lookup the item path:
+ false)
+ }
+ _ => cx.sess().span_bug(expr.span,
+ "create_function_debug_context: expected an expr_fn_block here")
+ }
+ }
+ ast_map::NodeTraitItem(trait_item) => {
+ match trait_item.node {
+ ast::MethodTraitItem(ref sig, Some(ref body)) => {
+ if contains_nodebug_attribute(&trait_item.attrs) {
+ return FunctionDebugContext::FunctionWithoutDebugInfo;
+ }
+
+ (trait_item.ident.name,
+ &sig.decl,
+ &sig.generics,
+ body,
+ trait_item.span,
+ true)
+ }
+ _ => {
+ cx.sess()
+ .bug(&format!("create_function_debug_context: \
+ unexpected sort of node: {:?}",
+ fnitem))
+ }
+ }
+ }
+ ast_map::NodeForeignItem(..) |
+ ast_map::NodeVariant(..) |
+ ast_map::NodeStructCtor(..) => {
+ return FunctionDebugContext::FunctionWithoutDebugInfo;
+ }
+ _ => cx.sess().bug(&format!("create_function_debug_context: \
+ unexpected sort of node: {:?}",
+ fnitem))
+ };
+
+ // This can be the case for functions inlined from another crate
+ if span == codemap::DUMMY_SP {
+ return FunctionDebugContext::FunctionWithoutDebugInfo;
+ }
+
+ let loc = span_start(cx, span);
+ let file_metadata = file_metadata(cx, &loc.file.name);
+
+ let function_type_metadata = unsafe {
+ let fn_signature = get_function_signature(cx,
+ fn_ast_id,
+ &*fn_decl,
+ param_substs,
+ span);
+ llvm::LLVMDIBuilderCreateSubroutineType(DIB(cx), file_metadata, fn_signature)
+ };
+
+ // Get_template_parameters() will append a `<...>` clause to the function
+ // name if necessary.
+ let mut function_name = String::from_str(&token::get_name(name));
+ let template_parameters = get_template_parameters(cx,
+ generics,
+ param_substs,
+ file_metadata,
+ &mut function_name);
+
+ // There is no ast_map::Path for ast::ExprClosure-type functions. For now,
+ // just don't put them into a namespace. In the future this could be improved
+ // somehow (storing a path in the ast_map, or construct a path using the
+ // enclosing function).
+ let (linkage_name, containing_scope) = if has_path {
+ let namespace_node = namespace_for_item(cx, ast_util::local_def(fn_ast_id));
+ let linkage_name = namespace_node.mangled_name_of_contained_item(
+ &function_name[..]);
+ let containing_scope = namespace_node.scope;
+ (linkage_name, containing_scope)
+ } else {
+ (function_name.clone(), file_metadata)
+ };
+
+ // Clang sets this parameter to the opening brace of the function's block,
+ // so let's do this too.
+ let scope_line = span_start(cx, top_level_block.span).line;
+
+ let is_local_to_unit = is_node_local_to_unit(cx, fn_ast_id);
+
+ let function_name = CString::new(function_name).unwrap();
+ let linkage_name = CString::new(linkage_name).unwrap();
+ let fn_metadata = unsafe {
+ llvm::LLVMDIBuilderCreateFunction(
+ DIB(cx),
+ containing_scope,
+ function_name.as_ptr(),
+ linkage_name.as_ptr(),
+ file_metadata,
+ loc.line as c_uint,
+ function_type_metadata,
+ is_local_to_unit,
+ true,
+ scope_line as c_uint,
+ FlagPrototyped as c_uint,
+ cx.sess().opts.optimize != config::No,
+ llfn,
+ template_parameters,
+ ptr::null_mut())
+ };
+
+ let scope_map = create_scope_map::create_scope_map(cx,
+ &fn_decl.inputs,
+ &*top_level_block,
+ fn_metadata,
+ fn_ast_id);
+
+ // Initialize fn debug context (including scope map and namespace map)
+ let fn_debug_context = box FunctionDebugContextData {
+ scope_map: RefCell::new(scope_map),
+ fn_metadata: fn_metadata,
+ argument_counter: Cell::new(1),
+ source_locations_enabled: Cell::new(false),
+ source_location_override: Cell::new(false),
+ };
+
+
+
+ return FunctionDebugContext::RegularContext(fn_debug_context);
+
+ fn get_function_signature<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
+ fn_ast_id: ast::NodeId,
+ fn_decl: &ast::FnDecl,
+ param_substs: &Substs<'tcx>,
+ error_reporting_span: Span) -> DIArray {
+ if cx.sess().opts.debuginfo == LimitedDebugInfo {
+ return create_DIArray(DIB(cx), &[]);
+ }
+
+ let mut signature = Vec::with_capacity(fn_decl.inputs.len() + 1);
+
+ // Return type -- llvm::DIBuilder wants this at index 0
+ assert_type_for_node_id(cx, fn_ast_id, error_reporting_span);
+ let return_type = ty::node_id_to_type(cx.tcx(), fn_ast_id);
+ let return_type = monomorphize::apply_param_substs(cx.tcx(),
+ param_substs,
+ &return_type);
+ if ty::type_is_nil(return_type) {
+ signature.push(ptr::null_mut())
+ } else {
+ signature.push(type_metadata(cx, return_type, codemap::DUMMY_SP));
+ }
+
+ // Arguments types
+ for arg in &fn_decl.inputs {
+ assert_type_for_node_id(cx, arg.pat.id, arg.pat.span);
+ let arg_type = ty::node_id_to_type(cx.tcx(), arg.pat.id);
+ let arg_type = monomorphize::apply_param_substs(cx.tcx(),
+ param_substs,
+ &arg_type);
+ signature.push(type_metadata(cx, arg_type, codemap::DUMMY_SP));
+ }
+
+ return create_DIArray(DIB(cx), &signature[..]);
+ }
+
+ fn get_template_parameters<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
+ generics: &ast::Generics,
+ param_substs: &Substs<'tcx>,
+ file_metadata: DIFile,
+ name_to_append_suffix_to: &mut String)
+ -> DIArray
+ {
+ let self_type = param_substs.self_ty();
+ let self_type = monomorphize::normalize_associated_type(cx.tcx(), &self_type);
+
+ // Only true for static default methods:
+ let has_self_type = self_type.is_some();
+
+ if !generics.is_type_parameterized() && !has_self_type {
+ return create_DIArray(DIB(cx), &[]);
+ }
+
+ name_to_append_suffix_to.push('<');
+
+ // The list to be filled with template parameters:
+ let mut template_params: Vec<DIDescriptor> =
+ Vec::with_capacity(generics.ty_params.len() + 1);
+
+ // Handle self type
+ if has_self_type {
+ let actual_self_type = self_type.unwrap();
+ // Add self type name to <...> clause of function name
+ let actual_self_type_name = compute_debuginfo_type_name(
+ cx,
+ actual_self_type,
+ true);
+
+ name_to_append_suffix_to.push_str(&actual_self_type_name[..]);
+
+ if generics.is_type_parameterized() {
+ name_to_append_suffix_to.push_str(",");
+ }
+
+ // Only create type information if full debuginfo is enabled
+ if cx.sess().opts.debuginfo == FullDebugInfo {
+ let actual_self_type_metadata = type_metadata(cx,
+ actual_self_type,
+ codemap::DUMMY_SP);
+
+ let name = token::get_name(special_idents::type_self.name);
+
+ let name = CString::new(name.as_bytes()).unwrap();
+ let param_metadata = unsafe {
+ llvm::LLVMDIBuilderCreateTemplateTypeParameter(
+ DIB(cx),
+ file_metadata,
+ name.as_ptr(),
+ actual_self_type_metadata,
+ ptr::null_mut(),
+ 0,
+ 0)
+ };
+
+ template_params.push(param_metadata);
+ }
+ }
+
+ // Handle other generic parameters
+ let actual_types = param_substs.types.get_slice(subst::FnSpace);
+ for (index, &ast::TyParam{ ident, .. }) in generics.ty_params.iter().enumerate() {
+ let actual_type = actual_types[index];
+ // Add actual type name to <...> clause of function name
+ let actual_type_name = compute_debuginfo_type_name(cx,
+ actual_type,
+ true);
+ name_to_append_suffix_to.push_str(&actual_type_name[..]);
+
+ if index != generics.ty_params.len() - 1 {
+ name_to_append_suffix_to.push_str(",");
+ }
+
+ // Again, only create type information if full debuginfo is enabled
+ if cx.sess().opts.debuginfo == FullDebugInfo {
+ let actual_type_metadata = type_metadata(cx, actual_type, codemap::DUMMY_SP);
+ let ident = token::get_ident(ident);
+ let name = CString::new(ident.as_bytes()).unwrap();
+ let param_metadata = unsafe {
+ llvm::LLVMDIBuilderCreateTemplateTypeParameter(
+ DIB(cx),
+ file_metadata,
+ name.as_ptr(),
+ actual_type_metadata,
+ ptr::null_mut(),
+ 0,
+ 0)
+ };
+ template_params.push(param_metadata);
+ }
+ }
+
+ name_to_append_suffix_to.push('>');
+
+ return create_DIArray(DIB(cx), &template_params[..]);
+ }
+}
+
+fn declare_local<'blk, 'tcx>(bcx: Block<'blk, 'tcx>,
+ variable_name: ast::Name,
+ variable_type: Ty<'tcx>,
+ scope_metadata: DIScope,
+ variable_access: VariableAccess,
+ variable_kind: VariableKind,
+ span: Span) {
+ let cx: &CrateContext = bcx.ccx();
+
+ let filename = span_start(cx, span).file.name.clone();
+ let file_metadata = file_metadata(cx, &filename[..]);
+
+ let name = token::get_name(variable_name);
+ let loc = span_start(cx, span);
+ let type_metadata = type_metadata(cx, variable_type, span);
+
+ let (argument_index, dwarf_tag) = match variable_kind {
+ ArgumentVariable(index) => (index as c_uint, DW_TAG_arg_variable),
+ LocalVariable |
+ CapturedVariable => (0, DW_TAG_auto_variable)
+ };
+
+ let name = CString::new(name.as_bytes()).unwrap();
+ match (variable_access, &[][..]) {
+ (DirectVariable { alloca }, address_operations) |
+ (IndirectVariable {alloca, address_operations}, _) => {
+ let metadata = unsafe {
+ llvm::LLVMDIBuilderCreateVariable(
+ DIB(cx),
+ dwarf_tag,
+ scope_metadata,
+ name.as_ptr(),
+ file_metadata,
+ loc.line as c_uint,
+ type_metadata,
+ cx.sess().opts.optimize != config::No,
+ 0,
+ address_operations.as_ptr(),
+ address_operations.len() as c_uint,
+ argument_index)
+ };
+ source_loc::set_debug_location(cx, InternalDebugLocation::new(scope_metadata,
+ loc.line,
+ loc.col.to_usize()));
+ unsafe {
+ let instr = llvm::LLVMDIBuilderInsertDeclareAtEnd(
+ DIB(cx),
+ alloca,
+ metadata,
+ address_operations.as_ptr(),
+ address_operations.len() as c_uint,
+ bcx.llbb);
+
+ llvm::LLVMSetInstDebugLocation(trans::build::B(bcx).llbuilder, instr);
+ }
+ }
+ }
+
+ match variable_kind {
+ ArgumentVariable(_) | CapturedVariable => {
+ assert!(!bcx.fcx
+ .debug_context
+ .get_ref(cx, span)
+ .source_locations_enabled
+ .get());
+ source_loc::set_debug_location(cx, InternalDebugLocation::UnknownLocation);
+ }
+ _ => { /* nothing to do */ }
+ }
+}
+
+#[derive(Copy, Clone, PartialEq, Eq, Debug)]
+pub enum DebugLoc {
+ At(ast::NodeId, Span),
+ None
+}
+
+impl DebugLoc {
+ pub fn apply(&self, fcx: &FunctionContext) {
+ match *self {
+ DebugLoc::At(node_id, span) => {
+ source_loc::set_source_location(fcx, node_id, span);
+ }
+ DebugLoc::None => {
+ source_loc::clear_source_location(fcx);
+ }
+ }
+ }
+}
+
+pub trait ToDebugLoc {
+ fn debug_loc(&self) -> DebugLoc;
+}
+
+impl ToDebugLoc for ast::Expr {
+ fn debug_loc(&self) -> DebugLoc {
+ DebugLoc::At(self.id, self.span)
+ }
+}
+
+impl ToDebugLoc for NodeIdAndSpan {
+ fn debug_loc(&self) -> DebugLoc {
+ DebugLoc::At(self.id, self.span)
+ }
+}
+
+impl ToDebugLoc for Option<NodeIdAndSpan> {
+ fn debug_loc(&self) -> DebugLoc {
+ match *self {
+ Some(NodeIdAndSpan { id, span }) => DebugLoc::At(id, span),
+ None => DebugLoc::None
+ }
+ }
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Namespace Handling.
+
+use super::utils::{DIB, debug_context};
+
+use llvm;
+use llvm::debuginfo::DIScope;
+use trans::common::CrateContext;
+use middle::ty::{self, ClosureTyper};
+
+use std::ffi::CString;
+use std::ptr;
+use std::rc::{Rc, Weak};
+use syntax::{ast, ast_map};
+use syntax::parse::token;
+
+pub struct NamespaceTreeNode {
+ pub name: ast::Name,
+ pub scope: DIScope,
+ pub parent: Option<Weak<NamespaceTreeNode>>,
+}
+
+impl NamespaceTreeNode {
+ pub fn mangled_name_of_contained_item(&self, item_name: &str) -> String {
+ fn fill_nested(node: &NamespaceTreeNode, output: &mut String) {
+ match node.parent {
+ Some(ref parent) => fill_nested(&*parent.upgrade().unwrap(), output),
+ None => {}
+ }
+ let string = token::get_name(node.name);
+ output.push_str(&format!("{}", string.len()));
+ output.push_str(&string);
+ }
+
+ let mut name = String::from_str("_ZN");
+ fill_nested(self, &mut name);
+ name.push_str(&format!("{}", item_name.len()));
+ name.push_str(item_name);
+ name.push('E');
+ name
+ }
+}
+
+pub fn crate_root_namespace<'a>(cx: &'a CrateContext) -> &'a str {
+ &cx.link_meta().crate_name
+}
+
+pub fn namespace_for_item(cx: &CrateContext, def_id: ast::DefId) -> Rc<NamespaceTreeNode> {
+ ty::with_path(cx.tcx(), def_id, |path| {
+ // prepend crate name if not already present
+ let krate = if def_id.krate == ast::LOCAL_CRATE {
+ let crate_namespace_name = token::intern(crate_root_namespace(cx));
+ Some(ast_map::PathMod(crate_namespace_name))
+ } else {
+ None
+ };
+ let mut path = krate.into_iter().chain(path).peekable();
+
+ let mut current_key = Vec::new();
+ let mut parent_node: Option<Rc<NamespaceTreeNode>> = None;
+
+ // Create/Lookup namespace for each element of the path.
+ loop {
+ // Emulate a for loop so we can use peek below.
+ let path_element = match path.next() {
+ Some(e) => e,
+ None => break
+ };
+ // Ignore the name of the item (the last path element).
+ if path.peek().is_none() {
+ break;
+ }
+
+ let name = path_element.name();
+ current_key.push(name);
+
+ let existing_node = debug_context(cx).namespace_map.borrow()
+ .get(¤t_key).cloned();
+ let current_node = match existing_node {
+ Some(existing_node) => existing_node,
+ None => {
+ // create and insert
+ let parent_scope = match parent_node {
+ Some(ref node) => node.scope,
+ None => ptr::null_mut()
+ };
+ let namespace_name = token::get_name(name);
+ let namespace_name = CString::new(namespace_name.as_bytes()).unwrap();
+ let scope = unsafe {
+ llvm::LLVMDIBuilderCreateNameSpace(
+ DIB(cx),
+ parent_scope,
+ namespace_name.as_ptr(),
+ // cannot reconstruct file ...
+ ptr::null_mut(),
+ // ... or line information, but that's not so important.
+ 0)
+ };
+
+ let node = Rc::new(NamespaceTreeNode {
+ name: name,
+ scope: scope,
+ parent: parent_node.map(|parent| parent.downgrade()),
+ });
+
+ debug_context(cx).namespace_map.borrow_mut()
+ .insert(current_key.clone(), node.clone());
+
+ node
+ }
+ };
+
+ parent_node = Some(current_node);
+ }
+
+ match parent_node {
+ Some(node) => node,
+ None => {
+ cx.sess().bug(&format!("debuginfo::namespace_for_item(): \
+ path too short for {:?}",
+ def_id));
+ }
+ }
+ })
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use self::InternalDebugLocation::*;
+
+use super::utils::{debug_context, span_start, fn_should_be_ignored};
+use super::metadata::{scope_metadata,UNKNOWN_COLUMN_NUMBER};
+use super::{FunctionDebugContext, DebugLoc};
+
+use llvm;
+use llvm::debuginfo::DIScope;
+use trans::common::{NodeIdAndSpan, CrateContext, FunctionContext};
+
+use libc::c_uint;
+use std::ptr;
+use syntax::codemap::{Span, Pos};
+use syntax::{ast, codemap};
+
+pub fn get_cleanup_debug_loc_for_ast_node<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
+ node_id: ast::NodeId,
+ node_span: Span,
+ is_block: bool)
+ -> NodeIdAndSpan {
+ // A debug location needs two things:
+ // (1) A span (of which only the beginning will actually be used)
+ // (2) An AST node-id which will be used to look up the lexical scope
+ // for the location in the functions scope-map
+ //
+ // This function will calculate the debug location for compiler-generated
+ // cleanup calls that are executed when control-flow leaves the
+ // scope identified by `node_id`.
+ //
+ // For everything but block-like things we can simply take id and span of
+ // the given expression, meaning that from a debugger's view cleanup code is
+ // executed at the same source location as the statement/expr itself.
+ //
+ // Blocks are a special case. Here we want the cleanup to be linked to the
+ // closing curly brace of the block. The *scope* the cleanup is executed in
+ // is up to debate: It could either still be *within* the block being
+ // cleaned up, meaning that locals from the block are still visible in the
+ // debugger.
+ // Or it could be in the scope that the block is contained in, so any locals
+ // from within the block are already considered out-of-scope and thus not
+ // accessible in the debugger anymore.
+ //
+ // The current implementation opts for the second option: cleanup of a block
+ // already happens in the parent scope of the block. The main reason for
+ // this decision is that scoping becomes controlflow dependent when variable
+ // shadowing is involved and it's impossible to decide statically which
+ // scope is actually left when the cleanup code is executed.
+ // In practice it shouldn't make much of a difference.
+
+ let mut cleanup_span = node_span;
+
+ if is_block {
+ // Not all blocks actually have curly braces (e.g. simple closure
+ // bodies), in which case we also just want to return the span of the
+ // whole expression.
+ let code_snippet = cx.sess().codemap().span_to_snippet(node_span);
+ if let Ok(code_snippet) = code_snippet {
+ let bytes = code_snippet.as_bytes();
+
+ if !bytes.is_empty() && &bytes[bytes.len()-1..] == b"}" {
+ cleanup_span = Span {
+ lo: node_span.hi - codemap::BytePos(1),
+ hi: node_span.hi,
+ expn_id: node_span.expn_id
+ };
+ }
+ }
+ }
+
+ NodeIdAndSpan {
+ id: node_id,
+ span: cleanup_span
+ }
+}
+
+
+/// Sets the current debug location at the beginning of the span.
+///
+/// Maps to a call to llvm::LLVMSetCurrentDebugLocation(...). The node_id
+/// parameter is used to reliably find the correct visibility scope for the code
+/// position.
+pub fn set_source_location(fcx: &FunctionContext,
+ node_id: ast::NodeId,
+ span: Span) {
+ match fcx.debug_context {
+ FunctionDebugContext::DebugInfoDisabled => return,
+ FunctionDebugContext::FunctionWithoutDebugInfo => {
+ set_debug_location(fcx.ccx, UnknownLocation);
+ return;
+ }
+ FunctionDebugContext::RegularContext(box ref function_debug_context) => {
+ if function_debug_context.source_location_override.get() {
+ // Just ignore any attempts to set a new debug location while
+ // the override is active.
+ return;
+ }
+
+ let cx = fcx.ccx;
+
+ debug!("set_source_location: {}", cx.sess().codemap().span_to_string(span));
+
+ if function_debug_context.source_locations_enabled.get() {
+ let loc = span_start(cx, span);
+ let scope = scope_metadata(fcx, node_id, span);
+
+ set_debug_location(cx, InternalDebugLocation::new(scope,
+ loc.line,
+ loc.col.to_usize()));
+ } else {
+ set_debug_location(cx, UnknownLocation);
+ }
+ }
+ }
+}
+
+/// This function makes sure that all debug locations emitted while executing
+/// `wrapped_function` are set to the given `debug_loc`.
+pub fn with_source_location_override<F, R>(fcx: &FunctionContext,
+ debug_loc: DebugLoc,
+ wrapped_function: F) -> R
+ where F: FnOnce() -> R
+{
+ match fcx.debug_context {
+ FunctionDebugContext::DebugInfoDisabled => {
+ wrapped_function()
+ }
+ FunctionDebugContext::FunctionWithoutDebugInfo => {
+ set_debug_location(fcx.ccx, UnknownLocation);
+ wrapped_function()
+ }
+ FunctionDebugContext::RegularContext(box ref function_debug_context) => {
+ if function_debug_context.source_location_override.get() {
+ wrapped_function()
+ } else {
+ debug_loc.apply(fcx);
+ function_debug_context.source_location_override.set(true);
+ let result = wrapped_function();
+ function_debug_context.source_location_override.set(false);
+ result
+ }
+ }
+ }
+}
+
+/// Clears the current debug location.
+///
+/// Instructions generated hereafter won't be assigned a source location.
+pub fn clear_source_location(fcx: &FunctionContext) {
+ if fn_should_be_ignored(fcx) {
+ return;
+ }
+
+ set_debug_location(fcx.ccx, UnknownLocation);
+}
+
+/// Enables emitting source locations for the given functions.
+///
+/// Since we don't want source locations to be emitted for the function prelude,
+/// they are disabled when beginning to translate a new function. This functions
+/// switches source location emitting on and must therefore be called before the
+/// first real statement/expression of the function is translated.
+pub fn start_emitting_source_locations(fcx: &FunctionContext) {
+ match fcx.debug_context {
+ FunctionDebugContext::RegularContext(box ref data) => {
+ data.source_locations_enabled.set(true)
+ },
+ _ => { /* safe to ignore */ }
+ }
+}
+
+
+#[derive(Copy, Clone, PartialEq)]
+pub enum InternalDebugLocation {
+ KnownLocation { scope: DIScope, line: usize, col: usize },
+ UnknownLocation
+}
+
+impl InternalDebugLocation {
+ pub fn new(scope: DIScope, line: usize, col: usize) -> InternalDebugLocation {
+ KnownLocation {
+ scope: scope,
+ line: line,
+ col: col,
+ }
+ }
+}
+
+pub fn set_debug_location(cx: &CrateContext, debug_location: InternalDebugLocation) {
+ if debug_location == debug_context(cx).current_debug_location.get() {
+ return;
+ }
+
+ let metadata_node;
+
+ match debug_location {
+ KnownLocation { scope, line, .. } => {
+ // Always set the column to zero like Clang and GCC
+ let col = UNKNOWN_COLUMN_NUMBER;
+ debug!("setting debug location to {} {}", line, col);
+
+ unsafe {
+ metadata_node = llvm::LLVMDIBuilderCreateDebugLocation(
+ debug_context(cx).llcontext,
+ line as c_uint,
+ col as c_uint,
+ scope,
+ ptr::null_mut());
+ }
+ }
+ UnknownLocation => {
+ debug!("clearing debug location ");
+ metadata_node = ptr::null_mut();
+ }
+ };
+
+ unsafe {
+ llvm::LLVMSetCurrentDebugLocation(cx.raw_builder(), metadata_node);
+ }
+
+ debug_context(cx).current_debug_location.set(debug_location);
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Type Names for Debug Info.
+
+use super::namespace::crate_root_namespace;
+
+use trans::common::CrateContext;
+use middle::subst::{self, Substs};
+use middle::ty::{self, Ty, ClosureTyper};
+use syntax::ast;
+use syntax::parse::token;
+use util::ppaux;
+
+
+// Compute the name of the type as it should be stored in debuginfo. Does not do
+// any caching, i.e. calling the function twice with the same type will also do
+// the work twice. The `qualified` parameter only affects the first level of the
+// type name, further levels (i.e. type parameters) are always fully qualified.
+pub fn compute_debuginfo_type_name<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
+ t: Ty<'tcx>,
+ qualified: bool)
+ -> String {
+ let mut result = String::with_capacity(64);
+ push_debuginfo_type_name(cx, t, qualified, &mut result);
+ result
+}
+
+// Pushes the name of the type as it should be stored in debuginfo on the
+// `output` String. See also compute_debuginfo_type_name().
+pub fn push_debuginfo_type_name<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
+ t: Ty<'tcx>,
+ qualified: bool,
+ output: &mut String) {
+ match t.sty {
+ ty::ty_bool => output.push_str("bool"),
+ ty::ty_char => output.push_str("char"),
+ ty::ty_str => output.push_str("str"),
+ ty::ty_int(ast::TyIs) => output.push_str("isize"),
+ ty::ty_int(ast::TyI8) => output.push_str("i8"),
+ ty::ty_int(ast::TyI16) => output.push_str("i16"),
+ ty::ty_int(ast::TyI32) => output.push_str("i32"),
+ ty::ty_int(ast::TyI64) => output.push_str("i64"),
+ ty::ty_uint(ast::TyUs) => output.push_str("usize"),
+ ty::ty_uint(ast::TyU8) => output.push_str("u8"),
+ ty::ty_uint(ast::TyU16) => output.push_str("u16"),
+ ty::ty_uint(ast::TyU32) => output.push_str("u32"),
+ ty::ty_uint(ast::TyU64) => output.push_str("u64"),
+ ty::ty_float(ast::TyF32) => output.push_str("f32"),
+ ty::ty_float(ast::TyF64) => output.push_str("f64"),
+ ty::ty_struct(def_id, substs) |
+ ty::ty_enum(def_id, substs) => {
+ push_item_name(cx, def_id, qualified, output);
+ push_type_params(cx, substs, output);
+ },
+ ty::ty_tup(ref component_types) => {
+ output.push('(');
+ for &component_type in component_types {
+ push_debuginfo_type_name(cx, component_type, true, output);
+ output.push_str(", ");
+ }
+ if !component_types.is_empty() {
+ output.pop();
+ output.pop();
+ }
+ output.push(')');
+ },
+ ty::ty_uniq(inner_type) => {
+ output.push_str("Box<");
+ push_debuginfo_type_name(cx, inner_type, true, output);
+ output.push('>');
+ },
+ ty::ty_ptr(ty::mt { ty: inner_type, mutbl } ) => {
+ output.push('*');
+ match mutbl {
+ ast::MutImmutable => output.push_str("const "),
+ ast::MutMutable => output.push_str("mut "),
+ }
+
+ push_debuginfo_type_name(cx, inner_type, true, output);
+ },
+ ty::ty_rptr(_, ty::mt { ty: inner_type, mutbl }) => {
+ output.push('&');
+ if mutbl == ast::MutMutable {
+ output.push_str("mut ");
+ }
+
+ push_debuginfo_type_name(cx, inner_type, true, output);
+ },
+ ty::ty_vec(inner_type, optional_length) => {
+ output.push('[');
+ push_debuginfo_type_name(cx, inner_type, true, output);
+
+ match optional_length {
+ Some(len) => {
+ output.push_str(&format!("; {}", len));
+ }
+ None => { /* nothing to do */ }
+ };
+
+ output.push(']');
+ },
+ ty::ty_trait(ref trait_data) => {
+ let principal = ty::erase_late_bound_regions(cx.tcx(), &trait_data.principal);
+ push_item_name(cx, principal.def_id, false, output);
+ push_type_params(cx, principal.substs, output);
+ },
+ ty::ty_bare_fn(_, &ty::BareFnTy{ unsafety, abi, ref sig } ) => {
+ if unsafety == ast::Unsafety::Unsafe {
+ output.push_str("unsafe ");
+ }
+
+ if abi != ::syntax::abi::Rust {
+ output.push_str("extern \"");
+ output.push_str(abi.name());
+ output.push_str("\" ");
+ }
+
+ output.push_str("fn(");
+
+ let sig = ty::erase_late_bound_regions(cx.tcx(), sig);
+ if !sig.inputs.is_empty() {
+ for ¶meter_type in &sig.inputs {
+ push_debuginfo_type_name(cx, parameter_type, true, output);
+ output.push_str(", ");
+ }
+ output.pop();
+ output.pop();
+ }
+
+ if sig.variadic {
+ if !sig.inputs.is_empty() {
+ output.push_str(", ...");
+ } else {
+ output.push_str("...");
+ }
+ }
+
+ output.push(')');
+
+ match sig.output {
+ ty::FnConverging(result_type) if ty::type_is_nil(result_type) => {}
+ ty::FnConverging(result_type) => {
+ output.push_str(" -> ");
+ push_debuginfo_type_name(cx, result_type, true, output);
+ }
+ ty::FnDiverging => {
+ output.push_str(" -> !");
+ }
+ }
+ },
+ ty::ty_closure(..) => {
+ output.push_str("closure");
+ }
+ ty::ty_err |
+ ty::ty_infer(_) |
+ ty::ty_projection(..) |
+ ty::ty_param(_) => {
+ cx.sess().bug(&format!("debuginfo: Trying to create type name for \
+ unexpected type: {}", ppaux::ty_to_string(cx.tcx(), t)));
+ }
+ }
+
+ fn push_item_name(cx: &CrateContext,
+ def_id: ast::DefId,
+ qualified: bool,
+ output: &mut String) {
+ ty::with_path(cx.tcx(), def_id, |path| {
+ if qualified {
+ if def_id.krate == ast::LOCAL_CRATE {
+ output.push_str(crate_root_namespace(cx));
+ output.push_str("::");
+ }
+
+ let mut path_element_count = 0;
+ for path_element in path {
+ let name = token::get_name(path_element.name());
+ output.push_str(&name);
+ output.push_str("::");
+ path_element_count += 1;
+ }
+
+ if path_element_count == 0 {
+ cx.sess().bug("debuginfo: Encountered empty item path!");
+ }
+
+ output.pop();
+ output.pop();
+ } else {
+ let name = token::get_name(path.last()
+ .expect("debuginfo: Empty item path?")
+ .name());
+ output.push_str(&name);
+ }
+ });
+ }
+
+ // Pushes the type parameters in the given `Substs` to the output string.
+ // This ignores region parameters, since they can't reliably be
+ // reconstructed for items from non-local crates. For local crates, this
+ // would be possible but with inlining and LTO we have to use the least
+ // common denominator - otherwise we would run into conflicts.
+ fn push_type_params<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
+ substs: &subst::Substs<'tcx>,
+ output: &mut String) {
+ if substs.types.is_empty() {
+ return;
+ }
+
+ output.push('<');
+
+ for &type_parameter in substs.types.iter() {
+ push_debuginfo_type_name(cx, type_parameter, true, output);
+ output.push_str(", ");
+ }
+
+ output.pop();
+ output.pop();
+
+ output.push('>');
+ }
+}
+
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Utility Functions.
+
+use super::{FunctionDebugContext, CrateDebugContext};
+use super::namespace::namespace_for_item;
+
+use llvm;
+use llvm::debuginfo::{DIScope, DIBuilderRef, DIDescriptor, DIArray};
+use trans::machine;
+use trans::common::{CrateContext, FunctionContext};
+use trans::type_::Type;
+
+use syntax::codemap::Span;
+use syntax::{ast, codemap};
+
+pub fn is_node_local_to_unit(cx: &CrateContext, node_id: ast::NodeId) -> bool
+{
+ // The is_local_to_unit flag indicates whether a function is local to the
+ // current compilation unit (i.e. if it is *static* in the C-sense). The
+ // *reachable* set should provide a good approximation of this, as it
+ // contains everything that might leak out of the current crate (by being
+ // externally visible or by being inlined into something externally
+ // visible). It might better to use the `exported_items` set from
+ // `driver::CrateAnalysis` in the future, but (atm) this set is not
+ // available in the translation pass.
+ !cx.reachable().contains(&node_id)
+}
+
+#[allow(non_snake_case)]
+pub fn create_DIArray(builder: DIBuilderRef, arr: &[DIDescriptor]) -> DIArray {
+ return unsafe {
+ llvm::LLVMDIBuilderGetOrCreateArray(builder, arr.as_ptr(), arr.len() as u32)
+ };
+}
+
+pub fn contains_nodebug_attribute(attributes: &[ast::Attribute]) -> bool {
+ attributes.iter().any(|attr| {
+ let meta_item: &ast::MetaItem = &*attr.node.value;
+ match meta_item.node {
+ ast::MetaWord(ref value) => &value[..] == "no_debug",
+ _ => false
+ }
+ })
+}
+
+/// Return codemap::Loc corresponding to the beginning of the span
+pub fn span_start(cx: &CrateContext, span: Span) -> codemap::Loc {
+ cx.sess().codemap().lookup_char_pos(span.lo)
+}
+
+pub fn size_and_align_of(cx: &CrateContext, llvm_type: Type) -> (u64, u64) {
+ (machine::llsize_of_alloc(cx, llvm_type), machine::llalign_of_min(cx, llvm_type) as u64)
+}
+
+pub fn bytes_to_bits(bytes: u64) -> u64 {
+ bytes * 8
+}
+
+#[inline]
+pub fn debug_context<'a, 'tcx>(cx: &'a CrateContext<'a, 'tcx>)
+ -> &'a CrateDebugContext<'tcx> {
+ let debug_context: &'a CrateDebugContext<'tcx> = cx.dbg_cx().as_ref().unwrap();
+ debug_context
+}
+
+#[inline]
+#[allow(non_snake_case)]
+pub fn DIB(cx: &CrateContext) -> DIBuilderRef {
+ cx.dbg_cx().as_ref().unwrap().builder
+}
+
+pub fn fn_should_be_ignored(fcx: &FunctionContext) -> bool {
+ match fcx.debug_context {
+ FunctionDebugContext::RegularContext(_) => false,
+ _ => true
+ }
+}
+
+pub fn assert_type_for_node_id(cx: &CrateContext,
+ node_id: ast::NodeId,
+ error_reporting_span: Span) {
+ if !cx.tcx().node_types().contains_key(&node_id) {
+ cx.sess().span_bug(error_reporting_span,
+ "debuginfo: Could not find type for node id!");
+ }
+}
+
+pub fn get_namespace_and_span_for_item(cx: &CrateContext, def_id: ast::DefId)
+ -> (DIScope, Span) {
+ let containing_scope = namespace_for_item(cx, def_id).scope;
+ let definition_span = if def_id.krate == ast::LOCAL_CRATE {
+ cx.tcx().map.span(def_id.node)
+ } else {
+ // For external items there is no span information
+ codemap::DUMMY_SP
+ };
+
+ (containing_scope, definition_span)
+}
ccx.sess().abort_if_errors();
}
+/// Remember to add all intrinsics here, in librustc_typeck/check/mod.rs,
+/// and in libcore/intrinsics.rs; if you need access to any llvm intrinsics,
+/// add them to librustc_trans/trans/context.rs
pub fn trans_intrinsic_call<'a, 'blk, 'tcx>(mut bcx: Block<'blk, 'tcx>,
node: ast::NodeId,
callee_ty: Ty<'tcx>,
llargs[1],
call_debug_location),
+ (_, "unchecked_udiv") => UDiv(bcx, llargs[0], llargs[1], call_debug_location),
+ (_, "unchecked_sdiv") => SDiv(bcx, llargs[0], llargs[1], call_debug_location),
+ (_, "unchecked_urem") => URem(bcx, llargs[0], llargs[1], call_debug_location),
+ (_, "unchecked_srem") => SRem(bcx, llargs[0], llargs[1], call_debug_location),
+
(_, "overflowing_add") => Add(bcx, llargs[0], llargs[1], call_debug_location),
(_, "overflowing_sub") => Sub(bcx, llargs[0], llargs[1], call_debug_location),
(_, "overflowing_mul") => Mul(bcx, llargs[0], llargs[1], call_debug_location),
}
"fence" => {
- AtomicFence(bcx, order);
+ AtomicFence(bcx, order, llvm::CrossThread);
+ C_nil(ccx)
+ }
+
+ "singlethreadfence" => {
+ AtomicFence(bcx, order, llvm::SingleThread);
C_nil(ccx)
}
ty::Predicate::Trait(ty::Binder(ref t_pred)) => {
let def_id = t_pred.trait_ref.def_id;
match rcx.tcx().lang_items.to_builtin_kind(def_id) {
+ // Issue 24895: deliberately do not include `BoundCopy` here.
Some(ty::BoundSend) |
Some(ty::BoundSized) |
- Some(ty::BoundCopy) |
Some(ty::BoundSync) => false,
_ => true,
}
}
}
+/// Remember to add all intrinsics here, in librustc_trans/trans/intrinsic.rs,
+/// and in libcore/intrinsics.rs
pub fn check_intrinsic_type(ccx: &CrateCtxt, it: &ast::ForeignItem) {
fn param<'a, 'tcx>(ccx: &CrateCtxt<'a, 'tcx>, n: u32) -> Ty<'tcx> {
let name = token::intern(&format!("P{}", n));
(1, vec!(ty::mk_mut_ptr(tcx, param(ccx, 0)), param(ccx, 0)),
param(ccx, 0))
}
- "fence" => {
+ "fence" | "singlethreadfence" => {
(0, Vec::new(), ty::mk_nil(tcx))
}
op => {
(0, vec!(tcx.types.u64, tcx.types.u64),
ty::mk_tup(tcx, vec!(tcx.types.u64, tcx.types.bool))),
+ "unchecked_udiv" | "unchecked_sdiv" | "unchecked_urem" | "unchecked_srem" =>
+ (1, vec![param(ccx, 0), param(ccx, 0)], param(ccx, 0)),
+
"overflowing_add" | "overflowing_sub" | "overflowing_mul" =>
(1, vec![param(ccx, 0), param(ccx, 0)], param(ccx, 0)),
#![feature(quote)]
#![feature(rustc_diagnostic_macros)]
#![feature(rustc_private)]
-#![feature(unsafe_destructor)]
#![feature(staged_api)]
#[macro_use] extern crate log;
fn len(&self) -> usize { self.table.size() }
}
-#[unsafe_destructor]
impl<'a, K: 'a, V: 'a> Drop for Drain<'a, K, V> {
fn drop(&mut self) {
for _ in self.by_ref() {}
}
}
-#[unsafe_destructor]
impl<K, V> Drop for RawTable<K, V> {
fn drop(&mut self) {
if self.capacity == 0 || self.capacity == mem::POST_DROP_USIZE {
use path::Path;
#[test]
- #[cfg_attr(any(windows, target_os = "android"), ignore)] // FIXME #8818, #10379
+ #[cfg_attr(any(windows,
+ target_os = "android", // FIXME #10379
+ target_env = "musl"), ignore)]
fn test_loading_cosine() {
// The math library does not need to be loaded since it is already
// statically linked in
use core::prelude::*;
use fmt;
+use ffi::OsString;
use io::{self, Error, ErrorKind, SeekFrom, Seek, Read, Write};
use path::{Path, PathBuf};
use sys::fs2 as fs_imp;
#[stable(feature = "rust1", since = "1.0.0")]
pub struct Permissions(fs_imp::FilePermissions);
+/// An structure representing a type of file with accessors for each file type.
+#[unstable(feature = "file_type", reason = "recently added API")]
+#[derive(Copy, Clone, PartialEq, Eq, Hash)]
+pub struct FileType(fs_imp::FileType);
+
+/// A builder used to create directories in various manners.
+///
+/// This builder also supports platform-specific options.
+#[unstable(feature = "dir_builder", reason = "recently added API")]
+pub struct DirBuilder {
+ inner: fs_imp::DirBuilder,
+ recursive: bool,
+}
+
impl File {
/// Attempts to open a file in read-only mode.
///
}
impl Metadata {
+ /// Returns the file type for this metadata.
+ #[unstable(feature = "file_type", reason = "recently added API")]
+ pub fn file_type(&self) -> FileType {
+ FileType(self.0.file_type())
+ }
+
/// Returns whether this metadata is for a directory.
///
/// # Examples
/// # }
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
- pub fn is_dir(&self) -> bool { self.0.is_dir() }
+ pub fn is_dir(&self) -> bool { self.file_type().is_dir() }
/// Returns whether this metadata is for a regular file.
///
/// # }
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
- pub fn is_file(&self) -> bool { self.0.is_file() }
+ pub fn is_file(&self) -> bool { self.file_type().is_file() }
/// Returns the size of the file, in bytes, this metadata is for.
///
reason = "the return type of u64 is not quite appropriate for \
this method and may change if the standard library \
gains a type to represent a moment in time")]
- pub fn accessed(&self) -> u64 { self.0.accessed() }
+ #[deprecated(since = "1.1.0",
+ reason = "use os::platform::fs::MetadataExt extension traits")]
+ pub fn accessed(&self) -> u64 {
+ self.adjust_time(self.0.accessed())
+ }
/// Returns the most recent modification time for a file.
///
reason = "the return type of u64 is not quite appropriate for \
this method and may change if the standard library \
gains a type to represent a moment in time")]
- pub fn modified(&self) -> u64 { self.0.modified() }
+ #[deprecated(since = "1.1.0",
+ reason = "use os::platform::fs::MetadataExt extension traits")]
+ pub fn modified(&self) -> u64 {
+ self.adjust_time(self.0.modified())
+ }
+
+ fn adjust_time(&self, val: u64) -> u64 {
+ // FILETIME (what `val` represents) is in 100ns intervals and there are
+ // 10000 intervals in a millisecond.
+ if cfg!(windows) {val / 10000} else {val}
+ }
+}
+
+impl AsInner<fs_imp::FileAttr> for Metadata {
+ fn as_inner(&self) -> &fs_imp::FileAttr { &self.0 }
}
impl Permissions {
}
}
+#[unstable(feature = "file_type", reason = "recently added API")]
+impl FileType {
+ /// Test whether this file type represents a directory.
+ pub fn is_dir(&self) -> bool { self.0.is_dir() }
+
+ /// Test whether this file type represents a regular file.
+ pub fn is_file(&self) -> bool { self.0.is_file() }
+
+ /// Test whether this file type represents a symbolic link.
+ pub fn is_symlink(&self) -> bool { self.0.is_symlink() }
+}
+
impl FromInner<fs_imp::FilePermissions> for Permissions {
fn from_inner(f: fs_imp::FilePermissions) -> Permissions {
Permissions(f)
/// The exact text, of course, depends on what files you have in `.`.
#[stable(feature = "rust1", since = "1.0.0")]
pub fn path(&self) -> PathBuf { self.0.path() }
+
+ /// Return the metadata for the file that this entry points at.
+ ///
+ /// This function will not traverse symlinks if this entry points at a
+ /// symlink.
+ ///
+ /// # Platform behavior
+ ///
+ /// On Windows this function is cheap to call (no extra system calls
+ /// needed), but on Unix platforms this function is the equivalent of
+ /// calling `symlink_metadata` on the path.
+ #[unstable(feature = "dir_entry_ext", reason = "recently added API")]
+ pub fn metadata(&self) -> io::Result<Metadata> {
+ self.0.metadata().map(Metadata)
+ }
+
+ /// Return the file type for the file that this entry points at.
+ ///
+ /// This function will not traverse symlinks if this entry points at a
+ /// symlink.
+ ///
+ /// # Platform behavior
+ ///
+ /// On Windows and most Unix platforms this function is free (no extra
+ /// system calls needed), but some Unix platforms may require the equivalent
+ /// call to `symlink_metadata` to learn about the target file type.
+ #[unstable(feature = "dir_entry_ext", reason = "recently added API")]
+ pub fn file_type(&self) -> io::Result<FileType> {
+ self.0.file_type().map(FileType)
+ }
+
+ /// Returns the bare file name of this directory entry without any other
+ /// leading path component.
+ #[unstable(feature = "dir_entry_ext", reason = "recently added API")]
+ pub fn file_name(&self) -> OsString {
+ self.0.file_name()
+ }
+}
+
+impl AsInner<fs_imp::DirEntry> for DirEntry {
+ fn as_inner(&self) -> &fs_imp::DirEntry { &self.0 }
}
/// Removes a file from the underlying filesystem.
fs_imp::stat(path.as_ref()).map(Metadata)
}
+/// Query the metadata about a file without following symlinks.
+///
+/// # Examples
+///
+/// ```rust
+/// #![feature(symlink_metadata)]
+/// # fn foo() -> std::io::Result<()> {
+/// use std::fs;
+///
+/// let attr = try!(fs::symlink_metadata("/some/file/path.txt"));
+/// // inspect attr ...
+/// # Ok(())
+/// # }
+/// ```
+#[unstable(feature = "symlink_metadata", reason = "recently added API")]
+pub fn symlink_metadata<P: AsRef<Path>>(path: P) -> io::Result<Metadata> {
+ fs_imp::lstat(path.as_ref()).map(Metadata)
+}
+
/// Rename a file or directory to a new name.
///
/// # Errors
fs_imp::readlink(path.as_ref())
}
+/// Returns the canonical form of a path with all intermediate components
+/// normalized and symbolic links resolved.
+#[unstable(feature = "fs_canonicalize", reason = "recently added API")]
+pub fn canonicalize<P: AsRef<Path>>(path: P) -> io::Result<PathBuf> {
+ fs_imp::canonicalize(path.as_ref())
+}
+
/// Creates a new, empty directory at the provided path
///
/// # Errors
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
pub fn create_dir<P: AsRef<Path>>(path: P) -> io::Result<()> {
- fs_imp::mkdir(path.as_ref())
+ DirBuilder::new().create(path.as_ref())
}
/// Recursively create a directory and all of its parent components if they
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
pub fn create_dir_all<P: AsRef<Path>>(path: P) -> io::Result<()> {
- let path = path.as_ref();
- if path == Path::new("") || path.is_dir() { return Ok(()) }
- if let Some(p) = path.parent() { try!(create_dir_all(p)) }
- create_dir(path)
+ DirBuilder::new().recursive(true).create(path.as_ref())
}
/// Removes an existing, empty directory.
let path = path.as_ref();
for child in try!(read_dir(path)) {
let child = try!(child).path();
- let stat = try!(lstat(&*child));
+ let stat = try!(symlink_metadata(&*child));
if stat.is_dir() {
try!(remove_dir_all(&*child));
} else {
try!(remove_file(&*child));
}
}
- return remove_dir(path);
-
- #[cfg(unix)]
- fn lstat(path: &Path) -> io::Result<fs_imp::FileAttr> { fs_imp::lstat(path) }
- #[cfg(windows)]
- fn lstat(path: &Path) -> io::Result<fs_imp::FileAttr> { fs_imp::stat(path) }
+ remove_dir(path)
}
/// Returns an iterator over the entries within a directory.
pub trait PathExt {
/// Gets information on the file, directory, etc at this path.
///
- /// Consult the `fs::stat` documentation for more info.
+ /// Consult the `fs::metadata` documentation for more info.
///
- /// This call preserves identical runtime/error semantics with `file::stat`.
+ /// This call preserves identical runtime/error semantics with
+ /// `fs::metadata`.
fn metadata(&self) -> io::Result<Metadata>;
+ /// Gets information on the file, directory, etc at this path.
+ ///
+ /// Consult the `fs::symlink_metadata` documentation for more info.
+ ///
+ /// This call preserves identical runtime/error semantics with
+ /// `fs::symlink_metadata`.
+ fn symlink_metadata(&self) -> io::Result<Metadata>;
+
+ /// Returns the canonical form of a path, normalizing all components and
+ /// eliminate all symlinks.
+ ///
+ /// This call preserves identical runtime/error semantics with
+ /// `fs::canonicalize`.
+ fn canonicalize(&self) -> io::Result<PathBuf>;
+
+ /// Reads the symlink at this path.
+ ///
+ /// For more information see `fs::read_link`.
+ fn read_link(&self) -> io::Result<PathBuf>;
+
+ /// Reads the directory at this path.
+ ///
+ /// For more information see `fs::read_dir`.
+ fn read_dir(&self) -> io::Result<ReadDir>;
+
/// Boolean value indicator whether the underlying file exists on the local
/// filesystem. Returns false in exactly the cases where `fs::stat` fails.
fn exists(&self) -> bool;
impl PathExt for Path {
fn metadata(&self) -> io::Result<Metadata> { metadata(self) }
-
+ fn symlink_metadata(&self) -> io::Result<Metadata> { symlink_metadata(self) }
+ fn canonicalize(&self) -> io::Result<PathBuf> { canonicalize(self) }
+ fn read_link(&self) -> io::Result<PathBuf> { read_link(self) }
+ fn read_dir(&self) -> io::Result<ReadDir> { read_dir(self) }
fn exists(&self) -> bool { metadata(self).is_ok() }
fn is_file(&self) -> bool {
metadata(self).map(|s| s.is_file()).unwrap_or(false)
}
+
fn is_dir(&self) -> bool {
metadata(self).map(|s| s.is_dir()).unwrap_or(false)
}
fs_imp::set_perm(path.as_ref(), perm.0)
}
+impl DirBuilder {
+ /// Creates a new set of options with default mode/security settings for all
+ /// platforms and also non-recursive.
+ pub fn new() -> DirBuilder {
+ DirBuilder {
+ inner: fs_imp::DirBuilder::new(),
+ recursive: false,
+ }
+ }
+
+ /// Indicate that directories create should be created recursively, creating
+ /// all parent directories if they do not exist with the same security and
+ /// permissions settings.
+ ///
+ /// This option defaults to `false`
+ pub fn recursive(&mut self, recursive: bool) -> &mut Self {
+ self.recursive = recursive;
+ self
+ }
+
+ /// Create the specified directory with the options configured in this
+ /// builder.
+ pub fn create<P: AsRef<Path>>(&self, path: P) -> io::Result<()> {
+ let path = path.as_ref();
+ if self.recursive {
+ self.create_dir_all(path)
+ } else {
+ self.inner.mkdir(path)
+ }
+ }
+
+ fn create_dir_all(&self, path: &Path) -> io::Result<()> {
+ if path == Path::new("") || path.is_dir() { return Ok(()) }
+ if let Some(p) = path.parent() {
+ try!(self.create_dir_all(p))
+ }
+ self.inner.mkdir(path)
+ }
+}
+
+impl AsInnerMut<fs_imp::DirBuilder> for DirBuilder {
+ fn as_inner_mut(&mut self) -> &mut fs_imp::DirBuilder {
+ &mut self.inner
+ }
+}
+
#[cfg(test)]
mod tests {
#![allow(deprecated)] //rand
let path = tmpdir.join("file");
check!(fs::create_dir_all(&path.join("a/")));
}
+
+ #[test]
+ #[cfg(not(windows))]
+ fn realpath_works() {
+ let tmpdir = tmpdir();
+ let tmpdir = fs::canonicalize(tmpdir.path()).unwrap();
+ let file = tmpdir.join("test");
+ let dir = tmpdir.join("test2");
+ let link = dir.join("link");
+ let linkdir = tmpdir.join("test3");
+
+ File::create(&file).unwrap();
+ fs::create_dir(&dir).unwrap();
+ fs::soft_link(&file, &link).unwrap();
+ fs::soft_link(&dir, &linkdir).unwrap();
+
+ assert!(link.symlink_metadata().unwrap().file_type().is_symlink());
+
+ assert_eq!(fs::canonicalize(&tmpdir).unwrap(), tmpdir);
+ assert_eq!(fs::canonicalize(&file).unwrap(), file);
+ assert_eq!(fs::canonicalize(&link).unwrap(), file);
+ assert_eq!(fs::canonicalize(&linkdir).unwrap(), dir);
+ assert_eq!(fs::canonicalize(&linkdir.join("link")).unwrap(), file);
+ }
+
+ #[test]
+ #[cfg(not(windows))]
+ fn realpath_works_tricky() {
+ let tmpdir = tmpdir();
+ let tmpdir = fs::canonicalize(tmpdir.path()).unwrap();
+
+ let a = tmpdir.join("a");
+ let b = a.join("b");
+ let c = b.join("c");
+ let d = a.join("d");
+ let e = d.join("e");
+ let f = a.join("f");
+
+ fs::create_dir_all(&b).unwrap();
+ fs::create_dir_all(&d).unwrap();
+ File::create(&f).unwrap();
+ fs::soft_link("../d/e", &c).unwrap();
+ fs::soft_link("../f", &e).unwrap();
+
+ assert_eq!(fs::canonicalize(&c).unwrap(), f);
+ assert_eq!(fs::canonicalize(&e).unwrap(), f);
+ }
+
+ #[test]
+ fn dir_entry_methods() {
+ let tmpdir = tmpdir();
+
+ fs::create_dir_all(&tmpdir.join("a")).unwrap();
+ File::create(&tmpdir.join("b")).unwrap();
+
+ for file in tmpdir.path().read_dir().unwrap().map(|f| f.unwrap()) {
+ let fname = file.file_name();
+ match fname.to_str() {
+ Some("a") => {
+ assert!(file.file_type().unwrap().is_dir());
+ assert!(file.metadata().unwrap().is_dir());
+ }
+ Some("b") => {
+ assert!(file.file_type().unwrap().is_file());
+ assert!(file.metadata().unwrap().is_file());
+ }
+ f => panic!("unknown file name: {:?}", f),
+ }
+ }
+ }
}
}
}
-#[unsafe_destructor]
impl<W: Write> Drop for BufWriter<W> {
fn drop(&mut self) {
if self.inner.is_some() {
where F: FnOnce(&mut Vec<u8>) -> Result<usize>
{
struct Guard<'a> { s: &'a mut Vec<u8>, len: usize }
- #[unsafe_destructor]
- impl<'a> Drop for Guard<'a> {
+ impl<'a> Drop for Guard<'a> {
fn drop(&mut self) {
unsafe { self.s.set_len(self.len); }
}
#![feature(staged_api)]
#![feature(unboxed_closures)]
#![feature(unicode)]
-#![feature(unsafe_destructor)]
#![feature(unsafe_no_drop_flag, filling_drop)]
#![feature(macro_reexport)]
#![feature(unique)]
#[macro_export]
#[stable(feature = "rust1", since = "1.0.0")]
#[allow_internal_unstable]
-#[cfg(stage0)]
-macro_rules! panic {
- () => ({
- panic!("explicit panic")
- });
- ($msg:expr) => ({
- $crate::rt::begin_unwind($msg, {
- // static requires less code at runtime, more constant data
- static _FILE_LINE: (&'static str, usize) = (file!(), line!() as usize);
- &_FILE_LINE
- })
- });
- ($fmt:expr, $($arg:tt)+) => ({
- $crate::rt::begin_unwind_fmt(format_args!($fmt, $($arg)+), {
- // The leading _'s are to avoid dead code warnings if this is
- // used inside a dead function. Just `#[allow(dead_code)]` is
- // insufficient, since the user may have
- // `#[forbid(dead_code)]` and which cannot be overridden.
- static _FILE_LINE: (&'static str, u32) = (file!(), line!());
- &_FILE_LINE
- })
- });
-}
-
/// The entry point for panic of Rust tasks.
///
/// This macro is used to inject panic into a Rust task, causing the task to
#[macro_export]
#[stable(feature = "rust1", since = "1.0.0")]
#[allow_internal_unstable]
-#[cfg(not(stage0))]
macro_rules! panic {
() => ({
panic!("explicit panic")
+++ /dev/null
-// Copyright 2012-2015 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! OS-specific functionality
-
-#![stable(feature = "os", since = "1.0.0")]
-
-#[cfg(unix)] pub use sys::ext as unix;
-#[cfg(windows)] pub use sys::ext as windows;
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Android-specific definitions
+
+#![unstable(feature = "raw_ext", reason = "recently added API")]
+
+pub mod raw;
+
+pub mod fs {
+ pub use sys::fs2::MetadataExt;
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Android-specific raw type definitions
+
+use os::raw::{c_uint, c_uchar, c_ulonglong, c_longlong, c_ulong};
+use os::unix::raw::{uid_t, gid_t};
+
+pub type blkcnt_t = u32;
+pub type blksize_t = u32;
+pub type dev_t = u32;
+pub type ino_t = u32;
+pub type mode_t = u16;
+pub type nlink_t = u16;
+pub type off_t = i32;
+pub type time_t = i32;
+
+#[repr(C)]
+pub struct stat {
+ pub st_dev: c_ulonglong,
+ pub __pad0: [c_uchar; 4],
+ pub __st_ino: ino_t,
+ pub st_mode: c_uint,
+ pub st_nlink: c_uint,
+ pub st_uid: uid_t,
+ pub st_gid: gid_t,
+ pub st_rdev: c_ulonglong,
+ pub __pad3: [c_uchar; 4],
+ pub st_size: c_longlong,
+ pub st_blksize: blksize_t,
+ pub st_blocks: c_ulonglong,
+ pub st_atime: time_t,
+ pub st_atime_nsec: c_ulong,
+ pub st_mtime: time_t,
+ pub st_mtime_nsec: c_ulong,
+ pub st_ctime: time_t,
+ pub st_ctime_nsec: c_ulong,
+ pub st_ino: c_ulonglong,
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Bitrig-specific definitions
+
+#![unstable(feature = "raw_ext", reason = "recently added API")]
+
+pub mod raw;
+
+pub mod fs {
+ pub use sys::fs2::MetadataExt;
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Bitrig-specific raw type definitions
+
+use os::raw::c_long;
+use os::unix::raw::{uid_t, gid_t};
+
+pub type blkcnt_t = i64;
+pub type blksize_t = u32;
+pub type dev_t = i32;
+pub type fflags_t = u32; // type not declared, but struct stat have u_int32_t
+pub type ino_t = u64;
+pub type mode_t = u32;
+pub type nlink_t = u32;
+pub type off_t = i64;
+pub type time_t = i64;
+
+#[repr(C)]
+pub struct stat {
+ pub st_mode: mode_t,
+ pub st_dev: dev_t,
+ pub st_ino: ino_t,
+ pub st_nlink: nlink_t,
+ pub st_uid: uid_t,
+ pub st_gid: gid_t,
+ pub st_rdev: dev_t,
+ pub st_atime: time_t,
+ pub st_atime_nsec: c_long,
+ pub st_mtime: time_t,
+ pub st_mtime_nsec: c_long,
+ pub st_ctime: time_t,
+ pub st_ctime_nsec: c_long,
+ pub st_size: off_t,
+ pub st_blocks: blkcnt_t,
+ pub st_blksize: blksize_t,
+ pub st_flags: fflags_t,
+ pub st_gen: u32,
+ pub st_birthtime: time_t,
+ pub st_birthtime_nsec: c_long,
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Dragonfly-specific definitions
+
+#![unstable(feature = "raw_ext", reason = "recently added API")]
+
+pub mod raw;
+
+pub mod fs {
+ pub use sys::fs2::MetadataExt;
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Dragonfly-specific raw type definitions
+
+use os::raw::c_long;
+use os::unix::raw::{pid_t, uid_t, gid_t};
+
+pub type blkcnt_t = i64;
+pub type blksize_t = u32;
+pub type dev_t = u32;
+pub type fflags_t = u32;
+pub type ino_t = u64;
+pub type mode_t = u16;
+pub type nlink_t = u16;
+pub type off_t = i64;
+pub type time_t = i64;
+
+#[repr(C)]
+pub struct stat {
+ pub st_ino: ino_t,
+ pub st_nlink: nlink_t,
+ pub st_dev: dev_t,
+ pub st_mode: mode_t,
+ pub st_padding1: u16,
+ pub st_uid: uid_t,
+ pub st_gid: gid_t,
+ pub st_rdev: dev_t,
+ pub st_atime: time_t,
+ pub st_atime_nsec: c_long,
+ pub st_mtime: time_t,
+ pub st_mtime_nsec: c_long,
+ pub st_ctime: time_t,
+ pub st_ctime_nsec: c_long,
+ pub st_size: off_t,
+ pub st_blocks: blkcnt_t,
+ pub st_blksize: blksize_t,
+ pub st_flags: fflags_t,
+ pub st_gen: uint32_t,
+ pub st_lspare: int32_t,
+ pub st_qspare1: int64_t,
+ pub st_qspare2: int64_t,
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! FreeBSD-specific definitions
+
+#![unstable(feature = "raw_ext", reason = "recently added API")]
+
+pub mod raw;
+
+pub mod fs {
+ pub use sys::fs2::MetadataExt;
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! FreeBSD-specific raw type definitions
+
+use os::raw::c_long;
+use os::unix::raw::{uid_t, gid_t, pid_t};
+
+pub type blkcnt_t = i64;
+pub type blksize_t = i64;
+pub type dev_t = u32;
+pub type fflags_t = u32;
+pub type ino_t = u32;
+pub type mode_t = u16;
+pub type nlink_t = u16;
+pub type off_t = i64;
+pub type time_t = i64;
+
+#[repr(C)]
+pub struct stat {
+ pub st_dev: dev_t,
+ pub st_ino: ino_t,
+ pub st_mode: mode_t,
+ pub st_nlink: nlink_t,
+ pub st_uid: uid_t,
+ pub st_gid: gid_t,
+ pub st_rdev: dev_t,
+ pub st_atime: time_t,
+ pub st_atime_nsec: c_long,
+ pub st_mtime: time_t,
+ pub st_mtime_nsec: c_long,
+ pub st_ctime: time_t,
+ pub st_ctime_nsec: c_long,
+ pub st_size: off_t,
+ pub st_blocks: blkcnt_t,
+ pub st_blksize: blksize_t,
+ pub st_flags: fflags_t,
+ pub st_gen: u32,
+ pub st_lspare: i32,
+ pub st_birthtime: time_t,
+ pub st_birthtime_nsec: c_long,
+ pub __unused: [u8; 2],
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! iOS-specific definitions
+
+#![unstable(feature = "raw_ext", reason = "recently added API")]
+
+pub mod raw;
+
+pub mod fs {
+ pub use sys::fs2::MetadataExt;
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! iOS-specific raw type definitions
+
+use os::raw::c_long;
+use os::unix::raw::{uid_t, gid_t, pid_t};
+
+pub type blkcnt_t = i64;
+pub type blksize_t = i32;
+pub type dev_t = i32;
+pub type ino_t = u64;
+pub type mode_t = u16;
+pub type nlink_t = u16;
+pub type off_t = i64;
+pub type time_t = c_long;
+
+#[repr(C)]
+pub struct stat {
+ pub st_dev: dev_t,
+ pub st_mode: mode_t,
+ pub st_nlink: nlink_t,
+ pub st_ino: ino_t,
+ pub st_uid: uid_t,
+ pub st_gid: gid_t,
+ pub st_rdev: dev_t,
+ pub st_atime: time_t,
+ pub st_atime_nsec: c_long,
+ pub st_mtime: time_t,
+ pub st_mtime_nsec: c_long,
+ pub st_ctime: time_t,
+ pub st_ctime_nsec: c_long,
+ pub st_birthtime: time_t,
+ pub st_birthtime_nsec: c_long,
+ pub st_size: off_t,
+ pub st_blocks: blkcnt_t,
+ pub st_blksize: blksize_t,
+ pub st_flags: u32,
+ pub st_gen: u32,
+ pub st_lspare: i32,
+ pub st_qspare: [i64; 2],
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Linux-specific definitions
+
+#![unstable(feature = "raw_ext", reason = "recently added API")]
+
+pub mod raw;
+
+pub mod fs {
+ pub use sys::fs2::MetadataExt;
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Linux-specific raw type definitions
+
+pub type dev_t = u64;
+pub type mode_t = u32;
+
+#[doc(inline)]
+pub use self::arch::{off_t, ino_t, nlink_t, blksize_t, blkcnt_t, stat, time_t};
+
+#[cfg(any(target_arch = "x86",
+ target_arch = "le32",
+ target_arch = "powerpc",
+ target_arch = "arm"))]
+mod arch {
+ use super::{dev_t, mode_t};
+ use os::raw::{c_long, c_short};
+ use os::unix::raw::{gid_t, uid_t};
+
+ pub type blkcnt_t = i32;
+ pub type blksize_t = i32;
+ pub type ino_t = u32;
+ pub type nlink_t = u32;
+ pub type off_t = i32;
+ pub type time_t = i32;
+
+ #[repr(C)]
+ pub struct stat {
+ pub st_dev: dev_t,
+ pub __pad1: c_short,
+ pub st_ino: ino_t,
+ pub st_mode: mode_t,
+ pub st_nlink: nlink_t,
+ pub st_uid: uid_t,
+ pub st_gid: gid_t,
+ pub st_rdev: dev_t,
+ pub __pad2: c_short,
+ pub st_size: off_t,
+ pub st_blksize: blksize_t,
+ pub st_blocks: blkcnt_t,
+ pub st_atime: time_t,
+ pub st_atime_nsec: c_long,
+ pub st_mtime: time_t,
+ pub st_mtime_nsec: c_long,
+ pub st_ctime: time_t,
+ pub st_ctime_nsec: c_long,
+ pub __unused4: c_long,
+ pub __unused5: c_long,
+ }
+}
+
+#[cfg(any(target_arch = "mips",
+ target_arch = "mipsel"))]
+mod arch {
+ use super::{dev_t, mode_t};
+ use os::raw::c_long;
+ use os::unix::raw::{gid_t, uid_t};
+
+ pub type blkcnt_t = i32;
+ pub type blksize_t = i32;
+ pub type ino_t = u32;
+ pub type nlink_t = u32;
+ pub type off_t = i32;
+ pub type time_t = i32;
+
+ #[repr(C)]
+ pub struct stat {
+ pub st_dev: c_ulong,
+ pub st_pad1: [c_long; 3],
+ pub st_ino: ino_t,
+ pub st_mode: mode_t,
+ pub st_nlink: nlink_t,
+ pub st_uid: uid_t,
+ pub st_gid: gid_t,
+ pub st_rdev: c_ulong,
+ pub st_pad2: [c_long; 2],
+ pub st_size: off_t,
+ pub st_pad3: c_long,
+ pub st_atime: time_t,
+ pub st_atime_nsec: c_long,
+ pub st_mtime: time_t,
+ pub st_mtime_nsec: c_long,
+ pub st_ctime: time_t,
+ pub st_ctime_nsec: c_long,
+ pub st_blksize: blksize_t,
+ pub st_blocks: blkcnt_t,
+ pub st_pad5: [c_long; 14],
+ }
+}
+
+#[cfg(target_arch = "aarch64")]
+mod arch {
+ use super::{dev_t, mode_t};
+ use os::raw::{c_long, c_int};
+ use os::unix::raw::{gid_t, uid_t};
+
+ pub type blkcnt_t = i64;
+ pub type blksize_t = i32;
+ pub type ino_t = u64;
+ pub type nlink_t = u32;
+ pub type off_t = i64;
+ pub type time_t = i64;
+
+ #[repr(C)]
+ pub struct stat {
+ pub st_dev: dev_t,
+ pub st_ino: ino_t,
+ pub st_mode: mode_t,
+ pub st_nlink: nlink_t,
+ pub st_uid: uid_t,
+ pub st_gid: gid_t,
+ pub st_rdev: dev_t,
+ pub __pad1: dev_t,
+ pub st_size: off_t,
+ pub st_blksize: blksize_t,
+ pub __pad2: c_int,
+ pub st_blocks: blkcnt_t,
+ pub st_atime: time_t,
+ pub st_atime_nsec: c_long,
+ pub st_mtime: time_t,
+ pub st_mtime_nsec: c_long,
+ pub st_ctime: time_t,
+ pub st_ctime_nsec: c_long,
+ pub __unused: [c_int; 2],
+ }
+}
+
+#[cfg(target_arch = "x86_64")]
+mod arch {
+ use super::{dev_t, mode_t};
+ use os::raw::{c_long, c_int};
+ use os::unix::raw::{gid_t, uid_t};
+
+ pub type blkcnt_t = i64;
+ pub type blksize_t = i64;
+ pub type ino_t = u64;
+ pub type nlink_t = u64;
+ pub type off_t = i64;
+ pub type time_t = i64;
+
+ #[repr(C)]
+ pub struct stat {
+ pub st_dev: dev_t,
+ pub st_ino: ino_t,
+ pub st_nlink: nlink_t,
+ pub st_mode: mode_t,
+ pub st_uid: uid_t,
+ pub st_gid: gid_t,
+ pub __pad0: c_int,
+ pub st_rdev: dev_t,
+ pub st_size: off_t,
+ pub st_blksize: blksize_t,
+ pub st_blocks: blkcnt_t,
+ pub st_atime: time_t,
+ pub st_atime_nsec: c_long,
+ pub st_mtime: time_t,
+ pub st_mtime_nsec: c_long,
+ pub st_ctime: time_t,
+ pub st_ctime_nsec: c_long,
+ pub __unused: [c_long; 3],
+ }
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! MacOS-specific definitions
+
+#![unstable(feature = "raw_ext", reason = "recently added API")]
+
+pub mod raw;
+
+pub mod fs {
+ pub use sys::fs2::MetadataExt;
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! MacOS-specific raw type definitions
+
+use os::raw::c_long;
+use os::unix::raw::{uid_t, gid_t};
+
+pub type blkcnt_t = i64;
+pub type blksize_t = i32;
+pub type dev_t = i32;
+pub type ino_t = u64;
+pub type mode_t = u16;
+pub type nlink_t = u16;
+pub type off_t = i64;
+pub type time_t = c_long;
+
+#[repr(C)]
+pub struct stat {
+ pub st_dev: dev_t,
+ pub st_mode: mode_t,
+ pub st_nlink: nlink_t,
+ pub st_ino: ino_t,
+ pub st_uid: uid_t,
+ pub st_gid: gid_t,
+ pub st_rdev: dev_t,
+ pub st_atime: time_t,
+ pub st_atime_nsec: c_long,
+ pub st_mtime: time_t,
+ pub st_mtime_nsec: c_long,
+ pub st_ctime: time_t,
+ pub st_ctime_nsec: c_long,
+ pub st_birthtime: time_t,
+ pub st_birthtime_nsec: c_long,
+ pub st_size: off_t,
+ pub st_blocks: blkcnt_t,
+ pub st_blksize: blksize_t,
+ pub st_flags: u32,
+ pub st_gen: u32,
+ pub st_lspare: i32,
+ pub st_qspare: [i64; 2],
+}
--- /dev/null
+// Copyright 2012-2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! OS-specific functionality
+
+#![stable(feature = "os", since = "1.0.0")]
+#![allow(missing_docs, bad_style)]
+
+#[cfg(unix)] pub use sys::ext as unix;
+#[cfg(windows)] pub use sys::ext as windows;
+
+#[cfg(target_os = "android")] pub mod android;
+#[cfg(target_os = "bitrig")] pub mod bitrig;
+#[cfg(target_os = "dragonfly")] pub mod dragonfly;
+#[cfg(target_os = "freebsd")] pub mod freebsd;
+#[cfg(target_os = "ios")] pub mod ios;
+#[cfg(target_os = "linux")] pub mod linux;
+#[cfg(target_os = "macos")] pub mod macos;
+#[cfg(target_os = "nacl")] pub mod nacl;
+#[cfg(target_os = "openbsd")] pub mod openbsd;
+
+pub mod raw;
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Nacl-specific definitions
+
+#![unstable(feature = "raw_ext", reason = "recently added API")]
+
+pub mod raw;
+
+pub mod fs {
+ pub use sys::fs2::MetadataExt;
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Nacl-specific raw type definitions
+
+pub type dev_t = u64;
+pub type mode_t = u32;
+
+pub use self::arch::{off_t, ino_t, nlink_t, blksize_t, blkcnt_t, stat, time_t};
+
+#[cfg(any(target_arch = "x86",
+ target_arch = "le32",
+ target_arch = "powerpc",
+ target_arch = "arm"))]
+mod arch {
+ use super::{dev_t, mode_t};
+ use os::raw::{c_long, c_short};
+ use os::unix::raw::{gid_t, uid_t};
+
+ pub type blkcnt_t = i32;
+ pub type blksize_t = i32;
+ pub type ino_t = u32;
+ pub type nlink_t = u32;
+ pub type off_t = i32;
+ pub type time_t = i32;
+
+ #[repr(C)]
+ pub struct stat {
+ pub st_dev: dev_t,
+ pub __pad1: c_short,
+ pub st_ino: ino_t,
+ pub st_mode: mode_t,
+ pub st_nlink: nlink_t,
+ pub st_uid: uid_t,
+ pub st_gid: gid_t,
+ pub st_rdev: dev_t,
+ pub __pad2: c_short,
+ pub st_size: off_t,
+ pub st_blksize: blksize_t,
+ pub st_blocks: blkcnt_t,
+ pub st_atime: time_t,
+ pub st_atime_nsec: c_long,
+ pub st_mtime: time_t,
+ pub st_mtime_nsec: c_long,
+ pub st_ctime: time_t,
+ pub st_ctime_nsec: c_long,
+ pub __unused4: c_long,
+ pub __unused5: c_long,
+ }
+}
+
+#[cfg(any(target_arch = "mips",
+ target_arch = "mipsel"))]
+mod arch {
+ use super::{dev_t, mode_t};
+ use os::raw::c_long;
+ use os::unix::raw::{gid_t, uid_t};
+
+ pub type blkcnt_t = i32;
+ pub type blksize_t = i32;
+ pub type ino_t = u32;
+ pub type nlink_t = u32;
+ pub type off_t = i32;
+ pub type time_t = i32;
+
+ #[repr(C)]
+ pub struct stat {
+ pub st_dev: c_ulong,
+ pub st_pad1: [c_long; 3],
+ pub st_ino: ino_t,
+ pub st_mode: mode_t,
+ pub st_nlink: nlink_t,
+ pub st_uid: uid_t,
+ pub st_gid: gid_t,
+ pub st_rdev: c_ulong,
+ pub st_pad2: [c_long; 2],
+ pub st_size: off_t,
+ pub st_pad3: c_long,
+ pub st_atime: time_t,
+ pub st_atime_nsec: c_long,
+ pub st_mtime: time_t,
+ pub st_mtime_nsec: c_long,
+ pub st_ctime: time_t,
+ pub st_ctime_nsec: c_long,
+ pub st_blksize: blksize_t,
+ pub st_blocks: blkcnt_t,
+ pub st_pad5: [c_long; 14],
+ }
+}
+
+#[cfg(target_arch = "aarch64")]
+mod arch {
+ use super::{dev_t, mode_t};
+ use os::raw::{c_long, c_int};
+ use os::unix::raw::{gid_t, uid_t};
+
+ pub type blkcnt_t = i64;
+ pub type blksize_t = i32;
+ pub type ino_t = u64;
+ pub type nlink_t = u32;
+ pub type off_t = i64;
+ pub type time_t = i64;
+
+ #[repr(C)]
+ pub struct stat {
+ pub st_dev: dev_t,
+ pub st_ino: ino_t,
+ pub st_mode: mode_t,
+ pub st_nlink: nlink_t,
+ pub st_uid: uid_t,
+ pub st_gid: gid_t,
+ pub st_rdev: dev_t,
+ pub __pad1: dev_t,
+ pub st_size: off_t,
+ pub st_blksize: blksize_t,
+ pub __pad2: c_int,
+ pub st_blocks: blkcnt_t,
+ pub st_atime: time_t,
+ pub st_atime_nsec: c_long,
+ pub st_mtime: time_t,
+ pub st_mtime_nsec: c_long,
+ pub st_ctime: time_t,
+ pub st_ctime_nsec: c_long,
+ pub __unused: [c_int; 2],
+ }
+}
+
+#[cfg(target_arch = "x86_64")]
+mod arch {
+ use super::{dev_t, mode_t};
+ use os::raw::{c_long, c_int};
+ use os::unix::raw::{gid_t, uid_t};
+
+ pub type blkcnt_t = i64;
+ pub type blksize_t = i64;
+ pub type ino_t = u64;
+ pub type nlink_t = u64;
+ pub type off_t = i64;
+ pub type time_t = i64;
+
+ #[repr(C)]
+ pub struct stat {
+ pub st_dev: dev_t,
+ pub st_ino: ino_t,
+ pub st_nlink: nlink_t,
+ pub st_mode: mode_t,
+ pub st_uid: uid_t,
+ pub st_gid: gid_t,
+ pub __pad0: c_int,
+ pub st_rdev: dev_t,
+ pub st_size: off_t,
+ pub st_blksize: blksize_t,
+ pub st_blocks: blkcnt_t,
+ pub st_atime: time_t,
+ pub st_atime_nsec: c_long,
+ pub st_mtime: time_t,
+ pub st_mtime_nsec: c_long,
+ pub st_ctime: time_t,
+ pub st_ctime_nsec: c_long,
+ pub __unused: [c_long; 3],
+ }
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! OpenBSD-specific definitions
+
+#![unstable(feature = "raw_ext", reason = "recently added API")]
+
+pub mod raw;
+
+pub mod fs {
+ pub use sys::fs2::MetadataExt;
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! OpenBSD-specific raw type definitions
+
+use os::raw::c_long;
+use os::unix::raw::{uid_t, gid_t, pid_t};
+
+pub type blkcnt_t = i64;
+pub type blksize_t = u32;
+pub type dev_t = i32;
+pub type fflags_t = u32; // type not declared, but struct stat have u_int32_t
+pub type ino_t = u64;
+pub type mode_t = u32;
+pub type nlink_t = u32;
+pub type off_t = i64;
+pub type time_t = i64;
+
+#[repr(C)]
+pub struct stat {
+ pub st_mode: mode_t,
+ pub st_dev: dev_t,
+ pub st_ino: ino_t,
+ pub st_nlink: nlink_t,
+ pub st_uid: uid_t,
+ pub st_gid: gid_t,
+ pub st_rdev: dev_t,
+ pub st_atime: time_t,
+ pub st_atime_nsec: c_long,
+ pub st_mtime: time_t,
+ pub st_mtime_nsec: c_long,
+ pub st_ctime: time_t,
+ pub st_ctime_nsec: c_long,
+ pub st_size: off_t,
+ pub st_blocks: blkcnt_t,
+ pub st_blksize: blksize_t,
+ pub st_flags: fflags_t,
+ pub st_gen: u32,
+ pub st_birthtime: time_t,
+ pub st_birthtime_nsec: c_long,
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Raw OS-specific types for the current platform/architecture
+
+#![unstable(feature = "raw_os", reason = "recently added API")]
+
+#[cfg(target_arch = "aarch64")] pub type c_char = u8;
+#[cfg(not(target_arch = "aarch64"))] pub type c_char = i8;
+pub type c_schar = i8;
+pub type c_uchar = u8;
+pub type c_short = i16;
+pub type c_ushort = u16;
+pub type c_int = i32;
+pub type c_uint = u32;
+#[cfg(any(target_pointer_width = "32", windows))] pub type c_long = i32;
+#[cfg(any(target_pointer_width = "32", windows))] pub type c_ulong = u32;
+#[cfg(all(target_pointer_width = "64", not(windows)))] pub type c_long = i64;
+#[cfg(all(target_pointer_width = "64", not(windows)))] pub type c_ulong = u64;
+pub type c_longlong = i64;
+pub type c_ulonglong = u64;
+pub type c_float = f32;
+pub type c_double = f64;
+
+/// Type used to construct void pointers for use with C.
+///
+/// This type is only useful as a pointer target. Do not use it as a
+/// return type for FFI functions which have the `void` return type in
+/// C. Use the unit type `()` or omit the return type instead.
+// NB: For LLVM to recognize the void pointer type and by extension
+// functions like malloc(), we need to have it represented as i8* in
+// LLVM bitcode. The enum used here ensures this and prevents misuse
+// of the "raw" type by only having private variants.. We need two
+// variants, because the compiler complains about the repr attribute
+// otherwise.
+#[repr(u8)]
+pub enum c_void {
+ #[doc(hidden)] __variant1,
+ #[doc(hidden)] __variant2,
+}
+
+#[cfg(test)]
+mod tests {
+ use any::TypeId;
+ use libc;
+ use mem;
+
+ macro_rules! ok {
+ ($($t:ident)*) => {$(
+ assert!(TypeId::of::<libc::$t>() == TypeId::of::<raw::$t>(),
+ "{} is wrong", stringify!($t));
+ )*}
+ }
+
+ macro_rules! ok_size {
+ ($($t:ident)*) => {$(
+ assert!(mem::size_of::<libc::$t>() == mem::size_of::<raw::$t>(),
+ "{} is wrong", stringify!($t));
+ )*}
+ }
+
+ #[test]
+ fn same() {
+ use os::raw;
+ ok!(c_char c_schar c_uchar c_short c_ushort c_int c_uint c_long c_ulong
+ c_longlong c_ulonglong c_float c_double);
+ }
+
+ #[cfg(unix)]
+ fn unix() {
+ {
+ use os::unix::raw;
+ ok!(uid_t gid_t dev_t ino_t mode_t nlink_t off_t blksize_t blkcnt_t);
+ }
+ {
+ use sys::platform::raw;
+ ok_size!(stat);
+ }
+ }
+
+ #[cfg(windows)]
+ fn windows() {
+ use os::windows::raw;
+ }
+}
extern "C" fn(unwind_code: _Unwind_Reason_Code,
exception: *mut _Unwind_Exception);
-#[cfg(any(target_os = "linux", target_os = "freebsd"))]
+#[cfg(any(all(target_os = "linux", not(target_env = "musl")),
+ target_os = "freebsd"))]
#[link(name = "gcc_s")]
extern {}
+#[cfg(all(target_os = "linux", target_env = "musl", not(test)))]
+#[link(name = "unwind", kind = "static")]
+extern {}
+
#[cfg(any(target_os = "android", target_os = "openbsd"))]
#[link(name = "gcc")]
extern {}
/// This is the entry point of unwinding for panic!() and assert!().
#[inline(never)] #[cold] // avoid code bloat at the call sites as much as possible
-#[cfg(stage0)]
-pub fn begin_unwind<M: Any + Send>(msg: M, file_line: &(&'static str, usize)) -> ! {
- // Note that this should be the only allocation performed in this code path.
- // Currently this means that panic!() on OOM will invoke this code path,
- // but then again we're not really ready for panic on OOM anyway. If
- // we do start doing this, then we should propagate this allocation to
- // be performed in the parent of this thread instead of the thread that's
- // panicking.
-
- // see below for why we do the `Any` coercion here.
- let (file, line) = *file_line;
- begin_unwind_inner(Box::new(msg), &(file, line as u32))
-}
-
-/// This is the entry point of unwinding for panic!() and assert!().
-#[inline(never)] #[cold] // avoid code bloat at the call sites as much as possible
-#[cfg(not(stage0))]
pub fn begin_unwind<M: Any + Send>(msg: M, file_line: &(&'static str, u32)) -> ! {
// Note that this should be the only allocation performed in this code path.
// Currently this means that panic!() on OOM will invoke this code path,
//
// On Linux, librt and libdl are indirect dependencies via std,
// and binutils 2.22+ won't add them automatically
-#[cfg(target_os = "linux")]
+#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[link(name = "dl")]
#[link(name = "pthread")]
extern {}
}
}
-#[unsafe_destructor]
#[stable(feature = "rust1", since = "1.0.0")]
impl<T> Drop for Sender<T> {
fn drop(&mut self) {
}
}
-#[unsafe_destructor]
#[stable(feature = "rust1", since = "1.0.0")]
impl<T> Drop for SyncSender<T> {
fn drop(&mut self) {
}
}
-#[unsafe_destructor]
#[stable(feature = "rust1", since = "1.0.0")]
impl<T> Drop for Receiver<T> {
fn drop(&mut self) {
}
}
-#[unsafe_destructor]
#[stable(feature = "rust1", since = "1.0.0")]
impl<T> Drop for Queue<T> {
fn drop(&mut self) {
}
}
-#[unsafe_destructor]
impl<T> Drop for Packet<T> {
fn drop(&mut self) {
assert_eq!(self.state.load(Ordering::SeqCst), DISCONNECTED);
}
}
-#[unsafe_destructor]
impl Drop for Select {
fn drop(&mut self) {
assert!(self.head.is_null());
}
}
-#[unsafe_destructor]
impl<'rx, T: Send> Drop for Handle<'rx, T> {
fn drop(&mut self) {
unsafe { self.remove() }
}
}
-#[unsafe_destructor]
impl<T> Drop for Packet<T> {
fn drop(&mut self) {
// Note that this load is not only an assert for correctness about
}
}
-#[unsafe_destructor]
impl<T> Drop for Queue<T> {
fn drop(&mut self) {
unsafe {
}
}
-#[unsafe_destructor]
impl<T> Drop for Packet<T> {
fn drop(&mut self) {
// Note that this load is not only an assert for correctness about
}
}
-#[unsafe_destructor]
impl<T> Drop for Packet<T> {
fn drop(&mut self) {
assert_eq!(self.channels.load(Ordering::SeqCst), 0);
}
}
-#[unsafe_destructor]
#[stable(feature = "rust1", since = "1.0.0")]
impl<T> Drop for Mutex<T> {
fn drop(&mut self) {
}
}
-#[unsafe_destructor]
#[stable(feature = "rust1", since = "1.0.0")]
impl<'a, T> Drop for MutexGuard<'a, T> {
#[inline]
}
}
-#[unsafe_destructor]
#[stable(feature = "rust1", since = "1.0.0")]
impl<T> Drop for RwLock<T> {
fn drop(&mut self) {
}
}
-#[unsafe_destructor]
#[stable(feature = "rust1", since = "1.0.0")]
impl<'a, T> Drop for RwLockReadGuard<'a, T> {
fn drop(&mut self) {
}
}
-#[unsafe_destructor]
#[stable(feature = "rust1", since = "1.0.0")]
impl<'a, T> Drop for RwLockWriteGuard<'a, T> {
fn drop(&mut self) {
}
}
-#[unsafe_destructor]
#[stable(feature = "rust1", since = "1.0.0")]
impl<'a> Drop for SemaphoreGuard<'a> {
fn drop(&mut self) {
}
}
-#[unsafe_destructor]
impl<T> Drop for ReentrantMutex<T> {
fn drop(&mut self) {
// This is actually safe b/c we know that there is no further usage of
}
}
-#[unsafe_destructor]
impl<'a, T> Drop for ReentrantMutexGuard<'a, T> {
#[inline]
fn drop(&mut self) {
pub fn gai_strerror(errcode: libc::c_int) -> *const libc::c_char;
pub fn setgroups(ngroups: libc::c_int,
ptr: *const libc::c_void) -> libc::c_int;
+ pub fn realpath(pathname: *const libc::c_char, resolved: *mut libc::c_char)
+ -> *mut libc::c_char;
}
#[cfg(any(target_os = "macos", target_os = "ios"))]
+++ /dev/null
-// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Experimental extensions to `std` for Unix platforms.
-//!
-//! For now, this module is limited to extracting file descriptors,
-//! but its functionality will grow over time.
-//!
-//! # Example
-//!
-//! ```no_run
-//! use std::fs::File;
-//! use std::os::unix::prelude::*;
-//!
-//! fn main() {
-//! let f = File::create("foo.txt").unwrap();
-//! let fd = f.as_raw_fd();
-//!
-//! // use fd with native unix bindings
-//! }
-//! ```
-
-#![stable(feature = "rust1", since = "1.0.0")]
-
-/// Unix-specific extensions to general I/O primitives
-#[stable(feature = "rust1", since = "1.0.0")]
-pub mod io {
- use fs;
- use libc;
- use net;
- use sys_common::{net2, AsInner, FromInner};
- use sys;
-
- /// Raw file descriptors.
- #[stable(feature = "rust1", since = "1.0.0")]
- pub type RawFd = libc::c_int;
-
- /// A trait to extract the raw unix file descriptor from an underlying
- /// object.
- ///
- /// This is only available on unix platforms and must be imported in order
- /// to call the method. Windows platforms have a corresponding `AsRawHandle`
- /// and `AsRawSocket` set of traits.
- #[stable(feature = "rust1", since = "1.0.0")]
- pub trait AsRawFd {
- /// Extracts the raw file descriptor.
- ///
- /// This method does **not** pass ownership of the raw file descriptor
- /// to the caller. The descriptor is only guarantee to be valid while
- /// the original object has not yet been destroyed.
- #[stable(feature = "rust1", since = "1.0.0")]
- fn as_raw_fd(&self) -> RawFd;
- }
-
- /// A trait to express the ability to construct an object from a raw file
- /// descriptor.
- #[unstable(feature = "from_raw_os",
- reason = "recent addition to std::os::unix::io")]
- pub trait FromRawFd {
- /// Constructs a new instances of `Self` from the given raw file
- /// descriptor.
- ///
- /// This function **consumes ownership** of the specified file
- /// descriptor. The returned object will take responsibility for closing
- /// it when the object goes out of scope.
- ///
- /// This function is also unsafe as the primitives currently returned
- /// have the contract that they are the sole owner of the file
- /// descriptor they are wrapping. Usage of this function could
- /// accidentally allow violating this contract which can cause memory
- /// unsafety in code that relies on it being true.
- unsafe fn from_raw_fd(fd: RawFd) -> Self;
- }
-
- #[stable(feature = "rust1", since = "1.0.0")]
- impl AsRawFd for fs::File {
- fn as_raw_fd(&self) -> RawFd {
- self.as_inner().fd().raw()
- }
- }
- #[unstable(feature = "from_raw_os", reason = "trait is unstable")]
- impl FromRawFd for fs::File {
- unsafe fn from_raw_fd(fd: RawFd) -> fs::File {
- fs::File::from_inner(sys::fs2::File::from_inner(fd))
- }
- }
-
- #[stable(feature = "rust1", since = "1.0.0")]
- impl AsRawFd for net::TcpStream {
- fn as_raw_fd(&self) -> RawFd { *self.as_inner().socket().as_inner() }
- }
- #[stable(feature = "rust1", since = "1.0.0")]
- impl AsRawFd for net::TcpListener {
- fn as_raw_fd(&self) -> RawFd { *self.as_inner().socket().as_inner() }
- }
- #[stable(feature = "rust1", since = "1.0.0")]
- impl AsRawFd for net::UdpSocket {
- fn as_raw_fd(&self) -> RawFd { *self.as_inner().socket().as_inner() }
- }
-
- #[unstable(feature = "from_raw_os", reason = "trait is unstable")]
- impl FromRawFd for net::TcpStream {
- unsafe fn from_raw_fd(fd: RawFd) -> net::TcpStream {
- let socket = sys::net::Socket::from_inner(fd);
- net::TcpStream::from_inner(net2::TcpStream::from_inner(socket))
- }
- }
- #[unstable(feature = "from_raw_os", reason = "trait is unstable")]
- impl FromRawFd for net::TcpListener {
- unsafe fn from_raw_fd(fd: RawFd) -> net::TcpListener {
- let socket = sys::net::Socket::from_inner(fd);
- net::TcpListener::from_inner(net2::TcpListener::from_inner(socket))
- }
- }
- #[unstable(feature = "from_raw_os", reason = "trait is unstable")]
- impl FromRawFd for net::UdpSocket {
- unsafe fn from_raw_fd(fd: RawFd) -> net::UdpSocket {
- let socket = sys::net::Socket::from_inner(fd);
- net::UdpSocket::from_inner(net2::UdpSocket::from_inner(socket))
- }
- }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// OsString and OsStr
-////////////////////////////////////////////////////////////////////////////////
-
-/// Unix-specific extension to the primitives in the `std::ffi` module
-#[stable(feature = "rust1", since = "1.0.0")]
-pub mod ffi {
- use ffi::{OsStr, OsString};
- use mem;
- use prelude::v1::*;
- use sys::os_str::Buf;
- use sys_common::{FromInner, IntoInner, AsInner};
-
- /// Unix-specific extensions to `OsString`.
- #[stable(feature = "rust1", since = "1.0.0")]
- pub trait OsStringExt {
- /// Creates an `OsString` from a byte vector.
- #[stable(feature = "rust1", since = "1.0.0")]
- fn from_vec(vec: Vec<u8>) -> Self;
-
- /// Yields the underlying byte vector of this `OsString`.
- #[stable(feature = "rust1", since = "1.0.0")]
- fn into_vec(self) -> Vec<u8>;
- }
-
- #[stable(feature = "rust1", since = "1.0.0")]
- impl OsStringExt for OsString {
- fn from_vec(vec: Vec<u8>) -> OsString {
- FromInner::from_inner(Buf { inner: vec })
- }
- fn into_vec(self) -> Vec<u8> {
- self.into_inner().inner
- }
- }
-
- /// Unix-specific extensions to `OsStr`.
- #[stable(feature = "rust1", since = "1.0.0")]
- pub trait OsStrExt {
- #[stable(feature = "rust1", since = "1.0.0")]
- fn from_bytes(slice: &[u8]) -> &Self;
-
- /// Gets the underlying byte view of the `OsStr` slice.
- #[stable(feature = "rust1", since = "1.0.0")]
- fn as_bytes(&self) -> &[u8];
- }
-
- #[stable(feature = "rust1", since = "1.0.0")]
- impl OsStrExt for OsStr {
- fn from_bytes(slice: &[u8]) -> &OsStr {
- unsafe { mem::transmute(slice) }
- }
- fn as_bytes(&self) -> &[u8] {
- &self.as_inner().inner
- }
- }
-}
-
-/// Unix-specific extensions to primitives in the `std::fs` module.
-#[unstable(feature = "fs_ext",
- reason = "may want a more useful mode abstraction")]
-pub mod fs {
- use sys;
- use sys_common::{FromInner, AsInner, AsInnerMut};
- use fs::{Permissions, OpenOptions};
- use path::Path;
- use convert::AsRef;
- use io;
-
- /// Unix-specific extensions to `Permissions`
- pub trait PermissionsExt {
- fn mode(&self) -> i32;
- fn set_mode(&mut self, mode: i32);
- }
-
- impl PermissionsExt for Permissions {
- fn mode(&self) -> i32 { self.as_inner().mode() }
-
- fn set_mode(&mut self, mode: i32) {
- *self = FromInner::from_inner(FromInner::from_inner(mode));
- }
- }
-
- /// Unix-specific extensions to `OpenOptions`
- pub trait OpenOptionsExt {
- /// Sets the mode bits that a new file will be created with.
- ///
- /// If a new file is created as part of a `File::open_opts` call then this
- /// specified `mode` will be used as the permission bits for the new file.
- fn mode(&mut self, mode: i32) -> &mut Self;
- }
-
- impl OpenOptionsExt for OpenOptions {
- fn mode(&mut self, mode: i32) -> &mut OpenOptions {
- self.as_inner_mut().mode(mode); self
- }
- }
-
- /// Creates a new symbolic link on the filesystem.
- ///
- /// The `dst` path will be a symbolic link pointing to the `src` path.
- ///
- /// # Note
- ///
- /// On Windows, you must specify whether a symbolic link points to a file
- /// or directory. Use `os::windows::fs::symlink_file` to create a
- /// symbolic link to a file, or `os::windows::fs::symlink_dir` to create a
- /// symbolic link to a directory. Additionally, the process must have
- /// `SeCreateSymbolicLinkPrivilege` in order to be able to create a
- /// symbolic link.
- ///
- /// # Examples
- ///
- /// ```
- /// #![feature(fs_ext)]
- /// use std::os::unix::fs;
- ///
- /// # fn foo() -> std::io::Result<()> {
- /// try!(fs::symlink("a.txt", "b.txt"));
- /// # Ok(())
- /// # }
- /// ```
- #[stable(feature = "rust1", since = "1.0.0")]
- pub fn symlink<P: AsRef<Path>, Q: AsRef<Path>>(src: P, dst: Q) -> io::Result<()>
- {
- sys::fs2::symlink(src.as_ref(), dst.as_ref())
- }
-
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// Process and Command
-////////////////////////////////////////////////////////////////////////////////
-
-/// Unix-specific extensions to primitives in the `std::process` module.
-#[stable(feature = "rust1", since = "1.0.0")]
-pub mod process {
- use prelude::v1::*;
- use libc::{uid_t, gid_t};
- use process;
- use sys;
- use sys_common::{AsInnerMut, AsInner};
-
- /// Unix-specific extensions to the `std::process::Command` builder
- #[stable(feature = "rust1", since = "1.0.0")]
- pub trait CommandExt {
- /// Sets the child process's user id. This translates to a
- /// `setuid` call in the child process. Failure in the `setuid`
- /// call will cause the spawn to fail.
- #[stable(feature = "rust1", since = "1.0.0")]
- fn uid(&mut self, id: uid_t) -> &mut process::Command;
-
- /// Similar to `uid`, but sets the group id of the child process. This has
- /// the same semantics as the `uid` field.
- #[stable(feature = "rust1", since = "1.0.0")]
- fn gid(&mut self, id: gid_t) -> &mut process::Command;
- }
-
- #[stable(feature = "rust1", since = "1.0.0")]
- impl CommandExt for process::Command {
- fn uid(&mut self, id: uid_t) -> &mut process::Command {
- self.as_inner_mut().uid = Some(id);
- self
- }
-
- fn gid(&mut self, id: gid_t) -> &mut process::Command {
- self.as_inner_mut().gid = Some(id);
- self
- }
- }
-
- /// Unix-specific extensions to `std::process::ExitStatus`
- #[stable(feature = "rust1", since = "1.0.0")]
- pub trait ExitStatusExt {
- /// If the process was terminated by a signal, returns that signal.
- #[stable(feature = "rust1", since = "1.0.0")]
- fn signal(&self) -> Option<i32>;
- }
-
- #[stable(feature = "rust1", since = "1.0.0")]
- impl ExitStatusExt for process::ExitStatus {
- fn signal(&self) -> Option<i32> {
- match *self.as_inner() {
- sys::process2::ExitStatus::Signal(s) => Some(s),
- _ => None
- }
- }
- }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// Prelude
-////////////////////////////////////////////////////////////////////////////////
-
-/// A prelude for conveniently writing platform-specific code.
-///
-/// Includes all extension traits, and some important type definitions.
-#[stable(feature = "rust1", since = "1.0.0")]
-pub mod prelude {
- #[doc(no_inline)]
- pub use super::io::{RawFd, AsRawFd};
- #[doc(no_inline)] #[stable(feature = "rust1", since = "1.0.0")]
- pub use super::ffi::{OsStrExt, OsStringExt};
- #[doc(no_inline)]
- pub use super::fs::{PermissionsExt, OpenOptionsExt};
- #[doc(no_inline)] #[stable(feature = "rust1", since = "1.0.0")]
- pub use super::process::{CommandExt, ExitStatusExt};
-}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Unix-specific extension to the primitives in the `std::ffi` module
+
+#![stable(feature = "rust1", since = "1.0.0")]
+
+use ffi::{OsStr, OsString};
+use mem;
+use prelude::v1::*;
+use sys::os_str::Buf;
+use sys_common::{FromInner, IntoInner, AsInner};
+
+/// Unix-specific extensions to `OsString`.
+#[stable(feature = "rust1", since = "1.0.0")]
+pub trait OsStringExt {
+ /// Creates an `OsString` from a byte vector.
+ #[stable(feature = "rust1", since = "1.0.0")]
+ fn from_vec(vec: Vec<u8>) -> Self;
+
+ /// Yields the underlying byte vector of this `OsString`.
+ #[stable(feature = "rust1", since = "1.0.0")]
+ fn into_vec(self) -> Vec<u8>;
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl OsStringExt for OsString {
+ fn from_vec(vec: Vec<u8>) -> OsString {
+ FromInner::from_inner(Buf { inner: vec })
+ }
+ fn into_vec(self) -> Vec<u8> {
+ self.into_inner().inner
+ }
+}
+
+/// Unix-specific extensions to `OsStr`.
+#[stable(feature = "rust1", since = "1.0.0")]
+pub trait OsStrExt {
+ #[stable(feature = "rust1", since = "1.0.0")]
+ fn from_bytes(slice: &[u8]) -> &Self;
+
+ /// Gets the underlying byte view of the `OsStr` slice.
+ #[stable(feature = "rust1", since = "1.0.0")]
+ fn as_bytes(&self) -> &[u8];
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl OsStrExt for OsStr {
+ fn from_bytes(slice: &[u8]) -> &OsStr {
+ unsafe { mem::transmute(slice) }
+ }
+ fn as_bytes(&self) -> &[u8] {
+ &self.as_inner().inner
+ }
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Unix-specific extensions to primitives in the `std::fs` module.
+
+#![stable(feature = "rust1", since = "1.0.0")]
+
+use prelude::v1::*;
+
+use fs::{self, Permissions, OpenOptions};
+use io;
+use mem;
+use os::raw::c_long;
+use os::unix::raw;
+use path::Path;
+use sys::platform;
+use sys;
+use sys_common::{FromInner, AsInner, AsInnerMut};
+
+#[unstable(feature = "fs_mode", reason = "recently added API")]
+pub const USER_READ: raw::mode_t = 0o400;
+#[unstable(feature = "fs_mode", reason = "recently added API")]
+pub const USER_WRITE: raw::mode_t = 0o200;
+#[unstable(feature = "fs_mode", reason = "recently added API")]
+pub const USER_EXECUTE: raw::mode_t = 0o100;
+#[unstable(feature = "fs_mode", reason = "recently added API")]
+pub const USER_RWX: raw::mode_t = 0o700;
+#[unstable(feature = "fs_mode", reason = "recently added API")]
+pub const GROUP_READ: raw::mode_t = 0o040;
+#[unstable(feature = "fs_mode", reason = "recently added API")]
+pub const GROUP_WRITE: raw::mode_t = 0o020;
+#[unstable(feature = "fs_mode", reason = "recently added API")]
+pub const GROUP_EXECUTE: raw::mode_t = 0o010;
+#[unstable(feature = "fs_mode", reason = "recently added API")]
+pub const GROUP_RWX: raw::mode_t = 0o070;
+#[unstable(feature = "fs_mode", reason = "recently added API")]
+pub const OTHER_READ: raw::mode_t = 0o004;
+#[unstable(feature = "fs_mode", reason = "recently added API")]
+pub const OTHER_WRITE: raw::mode_t = 0o002;
+#[unstable(feature = "fs_mode", reason = "recently added API")]
+pub const OTHER_EXECUTE: raw::mode_t = 0o001;
+#[unstable(feature = "fs_mode", reason = "recently added API")]
+pub const OTHER_RWX: raw::mode_t = 0o007;
+#[unstable(feature = "fs_mode", reason = "recently added API")]
+pub const ALL_READ: raw::mode_t = 0o444;
+#[unstable(feature = "fs_mode", reason = "recently added API")]
+pub const ALL_WRITE: raw::mode_t = 0o222;
+#[unstable(feature = "fs_mode", reason = "recently added API")]
+pub const ALL_EXECUTE: raw::mode_t = 0o111;
+#[unstable(feature = "fs_mode", reason = "recently added API")]
+pub const ALL_RWX: raw::mode_t = 0o777;
+#[unstable(feature = "fs_mode", reason = "recently added API")]
+pub const SETUID: raw::mode_t = 0o4000;
+#[unstable(feature = "fs_mode", reason = "recently added API")]
+pub const SETGID: raw::mode_t = 0o2000;
+#[unstable(feature = "fs_mode", reason = "recently added API")]
+pub const STICKY_BIT: raw::mode_t = 0o1000;
+
+/// Unix-specific extensions to `Permissions`
+#[unstable(feature = "fs_ext",
+ reason = "may want a more useful mode abstraction")]
+pub trait PermissionsExt {
+ fn mode(&self) -> raw::mode_t;
+ fn set_mode(&mut self, mode: raw::mode_t);
+ fn from_mode(mode: raw::mode_t) -> Self;
+}
+
+impl PermissionsExt for Permissions {
+ fn mode(&self) -> raw::mode_t { self.as_inner().mode() }
+
+ fn set_mode(&mut self, mode: raw::mode_t) {
+ *self = FromInner::from_inner(FromInner::from_inner(mode));
+ }
+
+ fn from_mode(mode: raw::mode_t) -> Permissions {
+ FromInner::from_inner(FromInner::from_inner(mode))
+ }
+}
+
+/// Unix-specific extensions to `OpenOptions`
+#[unstable(feature = "fs_ext",
+ reason = "may want a more useful mode abstraction")]
+pub trait OpenOptionsExt {
+ /// Sets the mode bits that a new file will be created with.
+ ///
+ /// If a new file is created as part of a `File::open_opts` call then this
+ /// specified `mode` will be used as the permission bits for the new file.
+ fn mode(&mut self, mode: raw::mode_t) -> &mut Self;
+}
+
+impl OpenOptionsExt for OpenOptions {
+ fn mode(&mut self, mode: raw::mode_t) -> &mut OpenOptions {
+ self.as_inner_mut().mode(mode); self
+ }
+}
+
+#[unstable(feature = "metadata_ext", reason = "recently added API")]
+pub struct Metadata(sys::fs2::FileAttr);
+
+#[unstable(feature = "metadata_ext", reason = "recently added API")]
+pub trait MetadataExt {
+ fn as_raw(&self) -> &Metadata;
+}
+
+impl MetadataExt for fs::Metadata {
+ fn as_raw(&self) -> &Metadata {
+ let inner: &sys::fs2::FileAttr = self.as_inner();
+ unsafe { mem::transmute(inner) }
+ }
+}
+
+impl AsInner<platform::raw::stat> for Metadata {
+ fn as_inner(&self) -> &platform::raw::stat { self.0.as_inner() }
+}
+
+// Hm, why are there casts here to the returned type, shouldn't the types always
+// be the same? Right you are! Turns out, however, on android at least the types
+// in the raw `stat` structure are not the same as the types being returned. Who
+// knew!
+//
+// As a result to make sure this compiles for all platforms we do the manual
+// casts and rely on manual lowering to `stat` if the raw type is desired.
+#[unstable(feature = "metadata_ext", reason = "recently added API")]
+impl Metadata {
+ pub fn dev(&self) -> raw::dev_t { self.0.raw().st_dev as raw::dev_t }
+ pub fn ino(&self) -> raw::ino_t { self.0.raw().st_ino as raw::ino_t }
+ pub fn mode(&self) -> raw::mode_t { self.0.raw().st_mode as raw::mode_t }
+ pub fn nlink(&self) -> raw::nlink_t { self.0.raw().st_nlink as raw::nlink_t }
+ pub fn uid(&self) -> raw::uid_t { self.0.raw().st_uid as raw::uid_t }
+ pub fn gid(&self) -> raw::gid_t { self.0.raw().st_gid as raw::gid_t }
+ pub fn rdev(&self) -> raw::dev_t { self.0.raw().st_rdev as raw::dev_t }
+ pub fn size(&self) -> raw::off_t { self.0.raw().st_size as raw::off_t }
+ pub fn atime(&self) -> raw::time_t { self.0.raw().st_atime }
+ pub fn atime_nsec(&self) -> c_long { self.0.raw().st_atime }
+ pub fn mtime(&self) -> raw::time_t { self.0.raw().st_mtime }
+ pub fn mtime_nsec(&self) -> c_long { self.0.raw().st_mtime }
+ pub fn ctime(&self) -> raw::time_t { self.0.raw().st_ctime }
+ pub fn ctime_nsec(&self) -> c_long { self.0.raw().st_ctime }
+
+ pub fn blksize(&self) -> raw::blksize_t {
+ self.0.raw().st_blksize as raw::blksize_t
+ }
+ pub fn blocks(&self) -> raw::blkcnt_t {
+ self.0.raw().st_blocks as raw::blkcnt_t
+ }
+}
+
+#[unstable(feature = "dir_entry_ext", reason = "recently added API")]
+pub trait DirEntryExt {
+ fn ino(&self) -> raw::ino_t;
+}
+
+impl DirEntryExt for fs::DirEntry {
+ fn ino(&self) -> raw::ino_t { self.as_inner().ino() }
+}
+
+/// Creates a new symbolic link on the filesystem.
+///
+/// The `dst` path will be a symbolic link pointing to the `src` path.
+///
+/// # Note
+///
+/// On Windows, you must specify whether a symbolic link points to a file
+/// or directory. Use `os::windows::fs::symlink_file` to create a
+/// symbolic link to a file, or `os::windows::fs::symlink_dir` to create a
+/// symbolic link to a directory. Additionally, the process must have
+/// `SeCreateSymbolicLinkPrivilege` in order to be able to create a
+/// symbolic link.
+///
+/// # Examples
+///
+/// ```
+/// use std::os::unix::fs;
+///
+/// # fn foo() -> std::io::Result<()> {
+/// try!(fs::symlink("a.txt", "b.txt"));
+/// # Ok(())
+/// # }
+/// ```
+#[stable(feature = "rust1", since = "1.0.0")]
+pub fn symlink<P: AsRef<Path>, Q: AsRef<Path>>(src: P, dst: Q) -> io::Result<()>
+{
+ sys::fs2::symlink(src.as_ref(), dst.as_ref())
+}
+
+#[unstable(feature = "dir_builder", reason = "recently added API")]
+/// An extension trait for `fs::DirBuilder` for unix-specific options.
+pub trait DirBuilderExt {
+ /// Sets the mode to create new directories with. This option defaults to
+ /// 0o777.
+ fn mode(&mut self, mode: raw::mode_t) -> &mut Self;
+}
+
+impl DirBuilderExt for fs::DirBuilder {
+ fn mode(&mut self, mode: raw::mode_t) -> &mut fs::DirBuilder {
+ self.as_inner_mut().set_mode(mode);
+ self
+ }
+}
+
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Unix-specific extensions to general I/O primitives
+
+#![stable(feature = "rust1", since = "1.0.0")]
+
+use fs;
+use net;
+use os::raw;
+use sys;
+use sys_common::{net2, AsInner, FromInner};
+
+/// Raw file descriptors.
+#[stable(feature = "rust1", since = "1.0.0")]
+pub type RawFd = raw::c_int;
+
+/// A trait to extract the raw unix file descriptor from an underlying
+/// object.
+///
+/// This is only available on unix platforms and must be imported in order
+/// to call the method. Windows platforms have a corresponding `AsRawHandle`
+/// and `AsRawSocket` set of traits.
+#[stable(feature = "rust1", since = "1.0.0")]
+pub trait AsRawFd {
+ /// Extracts the raw file descriptor.
+ ///
+ /// This method does **not** pass ownership of the raw file descriptor
+ /// to the caller. The descriptor is only guarantee to be valid while
+ /// the original object has not yet been destroyed.
+ #[stable(feature = "rust1", since = "1.0.0")]
+ fn as_raw_fd(&self) -> RawFd;
+}
+
+/// A trait to express the ability to construct an object from a raw file
+/// descriptor.
+#[unstable(feature = "from_raw_os",
+ reason = "recent addition to std::os::unix::io")]
+pub trait FromRawFd {
+ /// Constructs a new instances of `Self` from the given raw file
+ /// descriptor.
+ ///
+ /// This function **consumes ownership** of the specified file
+ /// descriptor. The returned object will take responsibility for closing
+ /// it when the object goes out of scope.
+ ///
+ /// This function is also unsafe as the primitives currently returned
+ /// have the contract that they are the sole owner of the file
+ /// descriptor they are wrapping. Usage of this function could
+ /// accidentally allow violating this contract which can cause memory
+ /// unsafety in code that relies on it being true.
+ unsafe fn from_raw_fd(fd: RawFd) -> Self;
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl AsRawFd for fs::File {
+ fn as_raw_fd(&self) -> RawFd {
+ self.as_inner().fd().raw()
+ }
+}
+#[unstable(feature = "from_raw_os", reason = "trait is unstable")]
+impl FromRawFd for fs::File {
+ unsafe fn from_raw_fd(fd: RawFd) -> fs::File {
+ fs::File::from_inner(sys::fs2::File::from_inner(fd))
+ }
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl AsRawFd for net::TcpStream {
+ fn as_raw_fd(&self) -> RawFd { *self.as_inner().socket().as_inner() }
+}
+#[stable(feature = "rust1", since = "1.0.0")]
+impl AsRawFd for net::TcpListener {
+ fn as_raw_fd(&self) -> RawFd { *self.as_inner().socket().as_inner() }
+}
+#[stable(feature = "rust1", since = "1.0.0")]
+impl AsRawFd for net::UdpSocket {
+ fn as_raw_fd(&self) -> RawFd { *self.as_inner().socket().as_inner() }
+}
+
+#[unstable(feature = "from_raw_os", reason = "trait is unstable")]
+impl FromRawFd for net::TcpStream {
+ unsafe fn from_raw_fd(fd: RawFd) -> net::TcpStream {
+ let socket = sys::net::Socket::from_inner(fd);
+ net::TcpStream::from_inner(net2::TcpStream::from_inner(socket))
+ }
+}
+#[unstable(feature = "from_raw_os", reason = "trait is unstable")]
+impl FromRawFd for net::TcpListener {
+ unsafe fn from_raw_fd(fd: RawFd) -> net::TcpListener {
+ let socket = sys::net::Socket::from_inner(fd);
+ net::TcpListener::from_inner(net2::TcpListener::from_inner(socket))
+ }
+}
+#[unstable(feature = "from_raw_os", reason = "trait is unstable")]
+impl FromRawFd for net::UdpSocket {
+ unsafe fn from_raw_fd(fd: RawFd) -> net::UdpSocket {
+ let socket = sys::net::Socket::from_inner(fd);
+ net::UdpSocket::from_inner(net2::UdpSocket::from_inner(socket))
+ }
+}
--- /dev/null
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Experimental extensions to `std` for Unix platforms.
+//!
+//! For now, this module is limited to extracting file descriptors,
+//! but its functionality will grow over time.
+//!
+//! # Example
+//!
+//! ```no_run
+//! use std::fs::File;
+//! use std::os::unix::prelude::*;
+//!
+//! fn main() {
+//! let f = File::create("foo.txt").unwrap();
+//! let fd = f.as_raw_fd();
+//!
+//! // use fd with native unix bindings
+//! }
+//! ```
+
+#![stable(feature = "rust1", since = "1.0.0")]
+
+pub mod io;
+pub mod ffi;
+pub mod fs;
+pub mod process;
+pub mod raw;
+
+/// A prelude for conveniently writing platform-specific code.
+///
+/// Includes all extension traits, and some important type definitions.
+#[stable(feature = "rust1", since = "1.0.0")]
+pub mod prelude {
+ #[doc(no_inline)]
+ pub use super::io::{RawFd, AsRawFd};
+ #[doc(no_inline)] #[stable(feature = "rust1", since = "1.0.0")]
+ pub use super::ffi::{OsStrExt, OsStringExt};
+ #[doc(no_inline)]
+ pub use super::fs::{PermissionsExt, OpenOptionsExt, MetadataExt};
+ #[doc(no_inline)]
+ pub use super::fs::{DirEntryExt};
+ #[doc(no_inline)] #[stable(feature = "rust1", since = "1.0.0")]
+ pub use super::process::{CommandExt, ExitStatusExt};
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Unix-specific extensions to primitives in the `std::process` module.
+
+#![stable(feature = "rust1", since = "1.0.0")]
+
+use os::unix::raw::{uid_t, gid_t};
+use prelude::v1::*;
+use process;
+use sys;
+use sys_common::{AsInnerMut, AsInner};
+
+/// Unix-specific extensions to the `std::process::Command` builder
+#[stable(feature = "rust1", since = "1.0.0")]
+pub trait CommandExt {
+ /// Sets the child process's user id. This translates to a
+ /// `setuid` call in the child process. Failure in the `setuid`
+ /// call will cause the spawn to fail.
+ #[stable(feature = "rust1", since = "1.0.0")]
+ fn uid(&mut self, id: uid_t) -> &mut process::Command;
+
+ /// Similar to `uid`, but sets the group id of the child process. This has
+ /// the same semantics as the `uid` field.
+ #[stable(feature = "rust1", since = "1.0.0")]
+ fn gid(&mut self, id: gid_t) -> &mut process::Command;
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl CommandExt for process::Command {
+ fn uid(&mut self, id: uid_t) -> &mut process::Command {
+ self.as_inner_mut().uid = Some(id);
+ self
+ }
+
+ fn gid(&mut self, id: gid_t) -> &mut process::Command {
+ self.as_inner_mut().gid = Some(id);
+ self
+ }
+}
+
+/// Unix-specific extensions to `std::process::ExitStatus`
+#[stable(feature = "rust1", since = "1.0.0")]
+pub trait ExitStatusExt {
+ /// If the process was terminated by a signal, returns that signal.
+ #[stable(feature = "rust1", since = "1.0.0")]
+ fn signal(&self) -> Option<i32>;
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl ExitStatusExt for process::ExitStatus {
+ fn signal(&self) -> Option<i32> {
+ match *self.as_inner() {
+ sys::process2::ExitStatus::Signal(s) => Some(s),
+ _ => None
+ }
+ }
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Unix-specific primitives available on all unix platforms
+
+#![unstable(feature = "raw_ext", reason = "recently added API")]
+
+pub type uid_t = u32;
+pub type gid_t = u32;
+pub type pid_t = i32;
+
+#[doc(inline)]
+pub use sys::platform::raw::{dev_t, ino_t, mode_t, nlink_t, off_t, blksize_t};
+#[doc(inline)]
+pub use sys::platform::raw::{blkcnt_t, time_t};
use ptr;
use sync::Arc;
use sys::fd::FileDesc;
+use sys::platform::raw;
use sys::{c, cvt, cvt_r};
-use sys_common::FromInner;
+use sys_common::{AsInner, FromInner};
use vec::Vec;
pub struct File(FileDesc);
pub struct FileAttr {
- stat: libc::stat,
+ stat: raw::stat,
}
pub struct ReadDir {
#[derive(Clone, PartialEq, Eq, Debug)]
pub struct FilePermissions { mode: mode_t }
+#[derive(Copy, Clone, PartialEq, Eq, Hash)]
+pub struct FileType { mode: mode_t }
+
+pub struct DirBuilder { mode: mode_t }
+
impl FileAttr {
- pub fn is_dir(&self) -> bool {
- (self.stat.st_mode as mode_t) & libc::S_IFMT == libc::S_IFDIR
- }
- pub fn is_file(&self) -> bool {
- (self.stat.st_mode as mode_t) & libc::S_IFMT == libc::S_IFREG
- }
pub fn size(&self) -> u64 { self.stat.st_size as u64 }
pub fn perm(&self) -> FilePermissions {
FilePermissions { mode: (self.stat.st_mode as mode_t) & 0o777 }
self.mktime(self.stat.st_mtime as u64, self.stat.st_mtime_nsec as u64)
}
+ pub fn file_type(&self) -> FileType {
+ FileType { mode: self.stat.st_mode as mode_t }
+ }
+
+ pub fn raw(&self) -> &raw::stat { &self.stat }
+
// times are in milliseconds (currently)
fn mktime(&self, secs: u64, nsecs: u64) -> u64 {
secs * 1000 + nsecs / 1000000
}
}
+impl AsInner<raw::stat> for FileAttr {
+ fn as_inner(&self) -> &raw::stat { &self.stat }
+}
+
+#[unstable(feature = "metadata_ext", reason = "recently added API")]
+pub trait MetadataExt {
+ fn as_raw_stat(&self) -> &raw::stat;
+}
+
+impl MetadataExt for ::fs::Metadata {
+ fn as_raw_stat(&self) -> &raw::stat { &self.as_inner().stat }
+}
+
+impl MetadataExt for ::os::unix::fs::Metadata {
+ fn as_raw_stat(&self) -> &raw::stat { self.as_inner() }
+}
+
impl FilePermissions {
pub fn readonly(&self) -> bool { self.mode & 0o222 == 0 }
pub fn set_readonly(&mut self, readonly: bool) {
self.mode |= 0o222;
}
}
- pub fn mode(&self) -> i32 { self.mode as i32 }
+ pub fn mode(&self) -> raw::mode_t { self.mode }
}
-impl FromInner<i32> for FilePermissions {
- fn from_inner(mode: i32) -> FilePermissions {
+impl FileType {
+ pub fn is_dir(&self) -> bool { self.is(libc::S_IFDIR) }
+ pub fn is_file(&self) -> bool { self.is(libc::S_IFREG) }
+ pub fn is_symlink(&self) -> bool { self.is(libc::S_IFLNK) }
+
+ fn is(&self, mode: mode_t) -> bool { self.mode & libc::S_IFMT == mode }
+}
+
+impl FromInner<raw::mode_t> for FilePermissions {
+ fn from_inner(mode: raw::mode_t) -> FilePermissions {
FilePermissions { mode: mode as mode_t }
}
}
self.root.join(<OsStr as OsStrExt>::from_bytes(self.name_bytes()))
}
+ pub fn file_name(&self) -> OsString {
+ OsStr::from_bytes(self.name_bytes()).to_os_string()
+ }
+
+ pub fn metadata(&self) -> io::Result<FileAttr> {
+ lstat(&self.path())
+ }
+
+ pub fn file_type(&self) -> io::Result<FileType> {
+ extern {
+ fn rust_dir_get_mode(ptr: *mut libc::dirent_t) -> c_int;
+ }
+ unsafe {
+ match rust_dir_get_mode(self.dirent()) {
+ -1 => lstat(&self.path()).map(|m| m.file_type()),
+ n => Ok(FileType { mode: n as mode_t }),
+ }
+ }
+ }
+
+ pub fn ino(&self) -> raw::ino_t {
+ extern {
+ fn rust_dir_get_ino(ptr: *mut libc::dirent_t) -> raw::ino_t;
+ }
+ unsafe { rust_dir_get_ino(self.dirent()) }
+ }
+
fn name_bytes(&self) -> &[u8] {
extern {
fn rust_list_dir_val(ptr: *mut libc::dirent_t) -> *const c_char;
self.flag(libc::O_CREAT, create);
}
- pub fn mode(&mut self, mode: i32) {
+ pub fn mode(&mut self, mode: raw::mode_t) {
self.mode = mode as mode_t;
}
pub fn into_fd(self) -> FileDesc { self.0 }
pub fn file_attr(&self) -> io::Result<FileAttr> {
- let mut stat: libc::stat = unsafe { mem::zeroed() };
- try!(cvt(unsafe { libc::fstat(self.0.raw(), &mut stat) }));
+ let mut stat: raw::stat = unsafe { mem::zeroed() };
+ try!(cvt(unsafe {
+ libc::fstat(self.0.raw(), &mut stat as *mut _ as *mut _)
+ }));
Ok(FileAttr { stat: stat })
}
pub fn fd(&self) -> &FileDesc { &self.0 }
}
+impl DirBuilder {
+ pub fn new() -> DirBuilder {
+ DirBuilder { mode: 0o777 }
+ }
+
+ pub fn mkdir(&self, p: &Path) -> io::Result<()> {
+ let p = try!(cstr(p));
+ try!(cvt(unsafe { libc::mkdir(p.as_ptr(), self.mode) }));
+ Ok(())
+ }
+
+ pub fn set_mode(&mut self, mode: mode_t) {
+ self.mode = mode;
+ }
+}
+
fn cstr(path: &Path) -> io::Result<CString> {
path.as_os_str().to_cstring().ok_or(
io::Error::new(io::ErrorKind::InvalidInput, "path contained a null"))
}
}
-pub fn mkdir(p: &Path) -> io::Result<()> {
- let p = try!(cstr(p));
- try!(cvt(unsafe { libc::mkdir(p.as_ptr(), 0o777) }));
- Ok(())
-}
-
pub fn readdir(p: &Path) -> io::Result<ReadDir> {
let root = Arc::new(p.to_path_buf());
let p = try!(cstr(p));
pub fn stat(p: &Path) -> io::Result<FileAttr> {
let p = try!(cstr(p));
- let mut stat: libc::stat = unsafe { mem::zeroed() };
- try!(cvt(unsafe { libc::stat(p.as_ptr(), &mut stat) }));
+ let mut stat: raw::stat = unsafe { mem::zeroed() };
+ try!(cvt(unsafe {
+ libc::stat(p.as_ptr(), &mut stat as *mut _ as *mut _)
+ }));
Ok(FileAttr { stat: stat })
}
pub fn lstat(p: &Path) -> io::Result<FileAttr> {
let p = try!(cstr(p));
- let mut stat: libc::stat = unsafe { mem::zeroed() };
- try!(cvt(unsafe { libc::lstat(p.as_ptr(), &mut stat) }));
+ let mut stat: raw::stat = unsafe { mem::zeroed() };
+ try!(cvt(unsafe {
+ libc::lstat(p.as_ptr(), &mut stat as *mut _ as *mut _)
+ }));
Ok(FileAttr { stat: stat })
}
try!(cvt(unsafe { c::utimes(p.as_ptr(), buf.as_ptr()) }));
Ok(())
}
+
+pub fn canonicalize(p: &Path) -> io::Result<PathBuf> {
+ let path = try!(CString::new(p.as_os_str().as_bytes()));
+ let mut buf = vec![0u8; 16 * 1024];
+ unsafe {
+ let r = c::realpath(path.as_ptr(), buf.as_mut_ptr() as *mut _);
+ if r.is_null() {
+ return Err(io::Error::last_os_error())
+ }
+ }
+ let p = buf.iter().position(|i| *i == 0).unwrap();
+ buf.truncate(p);
+ Ok(PathBuf::from(OsString::from_vec(buf)))
+}
use num::One;
use ops::Neg;
+#[cfg(target_os = "android")] pub use os::android as platform;
+#[cfg(target_os = "bitrig")] pub use os::bitrig as platform;
+#[cfg(target_os = "dragonfly")] pub use os::dragonfly as platform;
+#[cfg(target_os = "freebsd")] pub use os::freebsd as platform;
+#[cfg(target_os = "ios")] pub use os::ios as platform;
+#[cfg(target_os = "linux")] pub use os::linux as platform;
+#[cfg(target_os = "macos")] pub use os::macos as platform;
+#[cfg(target_os = "nacl")] pub use os::nacl as platform;
+#[cfg(target_os = "openbsd")] pub use os::openbsd as platform;
+
pub mod backtrace;
pub mod c;
pub mod condvar;
static mut __pthread_get_minstack: Option<F> = None;
INIT.call_once(|| {
- let lib = DynamicLibrary::open(None).unwrap();
+ let lib = match DynamicLibrary::open(None) {
+ Ok(l) => l,
+ Err(..) => return,
+ };
unsafe {
if let Ok(f) = lib.symbol("__pthread_get_minstack") {
__pthread_get_minstack = Some(mem::transmute::<*const (), F>(f));
// OpenBSD provide it via libc
#[cfg(not(any(target_os = "android",
target_os = "bitrig",
- target_os = "openbsd")))]
+ target_os = "openbsd",
+ target_env = "musl")))]
#[link(name = "rt")]
extern {}
+++ /dev/null
-// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Experimental extensions to `std` for Windows.
-//!
-//! For now, this module is limited to extracting handles, file
-//! descriptors, and sockets, but its functionality will grow over
-//! time.
-
-#![stable(feature = "rust1", since = "1.0.0")]
-
-#[stable(feature = "rust1", since = "1.0.0")]
-pub mod io {
- use fs;
- use libc;
- use net;
- use sys_common::{net2, AsInner, FromInner};
- use sys;
-
- /// Raw HANDLEs.
- #[stable(feature = "rust1", since = "1.0.0")]
- pub type RawHandle = libc::HANDLE;
-
- /// Raw SOCKETs.
- #[stable(feature = "rust1", since = "1.0.0")]
- pub type RawSocket = libc::SOCKET;
-
- /// Extract raw handles.
- #[stable(feature = "rust1", since = "1.0.0")]
- pub trait AsRawHandle {
- /// Extracts the raw handle, without taking any ownership.
- #[stable(feature = "rust1", since = "1.0.0")]
- fn as_raw_handle(&self) -> RawHandle;
- }
-
- /// Construct I/O objects from raw handles.
- #[unstable(feature = "from_raw_os",
- reason = "recent addition to the std::os::windows::io module")]
- pub trait FromRawHandle {
- /// Constructs a new I/O object from the specified raw handle.
- ///
- /// This function will **consume ownership** of the handle given,
- /// passing responsibility for closing the handle to the returned
- /// object.
- ///
- /// This function is also unsafe as the primitives currently returned
- /// have the contract that they are the sole owner of the file
- /// descriptor they are wrapping. Usage of this function could
- /// accidentally allow violating this contract which can cause memory
- /// unsafety in code that relies on it being true.
- unsafe fn from_raw_handle(handle: RawHandle) -> Self;
- }
-
- #[stable(feature = "rust1", since = "1.0.0")]
- impl AsRawHandle for fs::File {
- fn as_raw_handle(&self) -> RawHandle {
- self.as_inner().handle().raw()
- }
- }
-
- #[unstable(feature = "from_raw_os", reason = "trait is unstable")]
- impl FromRawHandle for fs::File {
- unsafe fn from_raw_handle(handle: RawHandle) -> fs::File {
- fs::File::from_inner(sys::fs2::File::from_inner(handle))
- }
- }
-
- /// Extract raw sockets.
- #[stable(feature = "rust1", since = "1.0.0")]
- pub trait AsRawSocket {
- /// Extracts the underlying raw socket from this object.
- #[stable(feature = "rust1", since = "1.0.0")]
- fn as_raw_socket(&self) -> RawSocket;
- }
-
- /// Create I/O objects from raw sockets.
- #[unstable(feature = "from_raw_os", reason = "recent addition to module")]
- pub trait FromRawSocket {
- /// Creates a new I/O object from the given raw socket.
- ///
- /// This function will **consume ownership** of the socket provided and
- /// it will be closed when the returned object goes out of scope.
- ///
- /// This function is also unsafe as the primitives currently returned
- /// have the contract that they are the sole owner of the file
- /// descriptor they are wrapping. Usage of this function could
- /// accidentally allow violating this contract which can cause memory
- /// unsafety in code that relies on it being true.
- unsafe fn from_raw_socket(sock: RawSocket) -> Self;
- }
-
- #[stable(feature = "rust1", since = "1.0.0")]
- impl AsRawSocket for net::TcpStream {
- fn as_raw_socket(&self) -> RawSocket {
- *self.as_inner().socket().as_inner()
- }
- }
- #[stable(feature = "rust1", since = "1.0.0")]
- impl AsRawSocket for net::TcpListener {
- fn as_raw_socket(&self) -> RawSocket {
- *self.as_inner().socket().as_inner()
- }
- }
- #[stable(feature = "rust1", since = "1.0.0")]
- impl AsRawSocket for net::UdpSocket {
- fn as_raw_socket(&self) -> RawSocket {
- *self.as_inner().socket().as_inner()
- }
- }
-
- #[unstable(feature = "from_raw_os", reason = "trait is unstable")]
- impl FromRawSocket for net::TcpStream {
- unsafe fn from_raw_socket(sock: RawSocket) -> net::TcpStream {
- let sock = sys::net::Socket::from_inner(sock);
- net::TcpStream::from_inner(net2::TcpStream::from_inner(sock))
- }
- }
- #[unstable(feature = "from_raw_os", reason = "trait is unstable")]
- impl FromRawSocket for net::TcpListener {
- unsafe fn from_raw_socket(sock: RawSocket) -> net::TcpListener {
- let sock = sys::net::Socket::from_inner(sock);
- net::TcpListener::from_inner(net2::TcpListener::from_inner(sock))
- }
- }
- #[unstable(feature = "from_raw_os", reason = "trait is unstable")]
- impl FromRawSocket for net::UdpSocket {
- unsafe fn from_raw_socket(sock: RawSocket) -> net::UdpSocket {
- let sock = sys::net::Socket::from_inner(sock);
- net::UdpSocket::from_inner(net2::UdpSocket::from_inner(sock))
- }
- }
-}
-
-/// Windows-specific extensions to the primitives in the `std::ffi` module.
-#[stable(feature = "rust1", since = "1.0.0")]
-pub mod ffi {
- use ffi::{OsString, OsStr};
- use sys::os_str::Buf;
- use sys_common::wtf8::Wtf8Buf;
- use sys_common::{FromInner, AsInner};
-
- pub use sys_common::wtf8::EncodeWide;
-
- /// Windows-specific extensions to `OsString`.
- #[stable(feature = "rust1", since = "1.0.0")]
- pub trait OsStringExt {
- /// Creates an `OsString` from a potentially ill-formed UTF-16 slice of
- /// 16-bit code units.
- ///
- /// This is lossless: calling `.encode_wide()` on the resulting string
- /// will always return the original code units.
- #[stable(feature = "rust1", since = "1.0.0")]
- fn from_wide(wide: &[u16]) -> Self;
- }
-
- #[stable(feature = "rust1", since = "1.0.0")]
- impl OsStringExt for OsString {
- fn from_wide(wide: &[u16]) -> OsString {
- FromInner::from_inner(Buf { inner: Wtf8Buf::from_wide(wide) })
- }
- }
-
- /// Windows-specific extensions to `OsStr`.
- #[stable(feature = "rust1", since = "1.0.0")]
- pub trait OsStrExt {
- /// Re-encodes an `OsStr` as a wide character sequence,
- /// i.e. potentially ill-formed UTF-16.
- ///
- /// This is lossless. Note that the encoding does not include a final
- /// null.
- #[stable(feature = "rust1", since = "1.0.0")]
- fn encode_wide(&self) -> EncodeWide;
- }
-
- #[stable(feature = "rust1", since = "1.0.0")]
- impl OsStrExt for OsStr {
- fn encode_wide(&self) -> EncodeWide {
- self.as_inner().inner.encode_wide()
- }
- }
-}
-
-/// Windows-specific extensions for the primitives in `std::fs`
-#[unstable(feature = "fs_ext", reason = "may require more thought/methods")]
-pub mod fs {
- use fs::OpenOptions;
- use sys;
- use sys_common::AsInnerMut;
- use path::Path;
- use convert::AsRef;
- use io;
-
- /// Windows-specific extensions to `OpenOptions`
- pub trait OpenOptionsExt {
- /// Overrides the `dwDesiredAccess` argument to the call to `CreateFile`
- /// with the specified value.
- fn desired_access(&mut self, access: i32) -> &mut Self;
-
- /// Overrides the `dwCreationDisposition` argument to the call to
- /// `CreateFile` with the specified value.
- ///
- /// This will override any values of the standard `create` flags, for
- /// example.
- fn creation_disposition(&mut self, val: i32) -> &mut Self;
-
- /// Overrides the `dwFlagsAndAttributes` argument to the call to
- /// `CreateFile` with the specified value.
- ///
- /// This will override any values of the standard flags on the
- /// `OpenOptions` structure.
- fn flags_and_attributes(&mut self, val: i32) -> &mut Self;
-
- /// Overrides the `dwShareMode` argument to the call to `CreateFile` with
- /// the specified value.
- ///
- /// This will override any values of the standard flags on the
- /// `OpenOptions` structure.
- fn share_mode(&mut self, val: i32) -> &mut Self;
- }
-
- impl OpenOptionsExt for OpenOptions {
- fn desired_access(&mut self, access: i32) -> &mut OpenOptions {
- self.as_inner_mut().desired_access(access); self
- }
- fn creation_disposition(&mut self, access: i32) -> &mut OpenOptions {
- self.as_inner_mut().creation_disposition(access); self
- }
- fn flags_and_attributes(&mut self, access: i32) -> &mut OpenOptions {
- self.as_inner_mut().flags_and_attributes(access); self
- }
- fn share_mode(&mut self, access: i32) -> &mut OpenOptions {
- self.as_inner_mut().share_mode(access); self
- }
- }
-
- /// Creates a new file symbolic link on the filesystem.
- ///
- /// The `dst` path will be a file symbolic link pointing to the `src`
- /// path.
- ///
- /// # Examples
- ///
- /// ```ignore
- /// #![feature(fs_ext)]
- /// use std::os::windows::fs;
- ///
- /// # fn foo() -> std::io::Result<()> {
- /// try!(fs::symlink_file("a.txt", "b.txt"));
- /// # Ok(())
- /// # }
- /// ```
- #[stable(feature = "rust1", since = "1.0.0")]
- pub fn symlink_file<P: AsRef<Path>, Q: AsRef<Path>>(src: P, dst: Q)
- -> io::Result<()>
- {
- sys::fs2::symlink_inner(src.as_ref(), dst.as_ref(), false)
- }
-
- /// Creates a new directory symlink on the filesystem.
- ///
- /// The `dst` path will be a directory symbolic link pointing to the `src`
- /// path.
- ///
- /// # Examples
- ///
- /// ```ignore
- /// #![feature(fs_ext)]
- /// use std::os::windows::fs;
- ///
- /// # fn foo() -> std::io::Result<()> {
- /// try!(fs::symlink_file("a", "b"));
- /// # Ok(())
- /// # }
- /// ```
- #[stable(feature = "rust1", since = "1.0.0")]
- pub fn symlink_dir<P: AsRef<Path>, Q: AsRef<Path>> (src: P, dst: Q)
- -> io::Result<()>
- {
- sys::fs2::symlink_inner(src.as_ref(), dst.as_ref(), true)
- }
-}
-
-/// A prelude for conveniently writing platform-specific code.
-///
-/// Includes all extension traits, and some important type definitions.
-#[stable(feature = "rust1", since = "1.0.0")]
-pub mod prelude {
- #[doc(no_inline)]
- pub use super::io::{RawSocket, RawHandle, AsRawSocket, AsRawHandle};
- #[doc(no_inline)] #[stable(feature = "rust1", since = "1.0.0")]
- pub use super::ffi::{OsStrExt, OsStringExt};
- #[doc(no_inline)]
- pub use super::fs::OpenOptionsExt;
-}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Windows-specific extensions to the primitives in the `std::ffi` module.
+
+#![stable(feature = "rust1", since = "1.0.0")]
+
+use ffi::{OsString, OsStr};
+use sys::os_str::Buf;
+use sys_common::wtf8::Wtf8Buf;
+use sys_common::{FromInner, AsInner};
+
+pub use sys_common::wtf8::EncodeWide;
+
+/// Windows-specific extensions to `OsString`.
+#[stable(feature = "rust1", since = "1.0.0")]
+pub trait OsStringExt {
+ /// Creates an `OsString` from a potentially ill-formed UTF-16 slice of
+ /// 16-bit code units.
+ ///
+ /// This is lossless: calling `.encode_wide()` on the resulting string
+ /// will always return the original code units.
+ #[stable(feature = "rust1", since = "1.0.0")]
+ fn from_wide(wide: &[u16]) -> Self;
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl OsStringExt for OsString {
+ fn from_wide(wide: &[u16]) -> OsString {
+ FromInner::from_inner(Buf { inner: Wtf8Buf::from_wide(wide) })
+ }
+}
+
+/// Windows-specific extensions to `OsStr`.
+#[stable(feature = "rust1", since = "1.0.0")]
+pub trait OsStrExt {
+ /// Re-encodes an `OsStr` as a wide character sequence,
+ /// i.e. potentially ill-formed UTF-16.
+ ///
+ /// This is lossless. Note that the encoding does not include a final
+ /// null.
+ #[stable(feature = "rust1", since = "1.0.0")]
+ fn encode_wide(&self) -> EncodeWide;
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl OsStrExt for OsStr {
+ fn encode_wide(&self) -> EncodeWide {
+ self.as_inner().inner.encode_wide()
+ }
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Windows-specific extensions for the primitives in `std::fs`
+
+#![stable(feature = "rust1", since = "1.0.0")]
+
+use prelude::v1::*;
+
+use fs::{OpenOptions, Metadata};
+use io;
+use path::Path;
+use sys;
+use sys_common::{AsInnerMut, AsInner};
+
+/// Windows-specific extensions to `OpenOptions`
+#[unstable(feature = "fs_ext", reason = "may require more thought/methods")]
+pub trait OpenOptionsExt {
+ /// Overrides the `dwDesiredAccess` argument to the call to `CreateFile`
+ /// with the specified value.
+ fn desired_access(&mut self, access: i32) -> &mut Self;
+
+ /// Overrides the `dwCreationDisposition` argument to the call to
+ /// `CreateFile` with the specified value.
+ ///
+ /// This will override any values of the standard `create` flags, for
+ /// example.
+ fn creation_disposition(&mut self, val: i32) -> &mut Self;
+
+ /// Overrides the `dwFlagsAndAttributes` argument to the call to
+ /// `CreateFile` with the specified value.
+ ///
+ /// This will override any values of the standard flags on the
+ /// `OpenOptions` structure.
+ fn flags_and_attributes(&mut self, val: i32) -> &mut Self;
+
+ /// Overrides the `dwShareMode` argument to the call to `CreateFile` with
+ /// the specified value.
+ ///
+ /// This will override any values of the standard flags on the
+ /// `OpenOptions` structure.
+ fn share_mode(&mut self, val: i32) -> &mut Self;
+}
+
+impl OpenOptionsExt for OpenOptions {
+ fn desired_access(&mut self, access: i32) -> &mut OpenOptions {
+ self.as_inner_mut().desired_access(access); self
+ }
+ fn creation_disposition(&mut self, access: i32) -> &mut OpenOptions {
+ self.as_inner_mut().creation_disposition(access); self
+ }
+ fn flags_and_attributes(&mut self, access: i32) -> &mut OpenOptions {
+ self.as_inner_mut().flags_and_attributes(access); self
+ }
+ fn share_mode(&mut self, access: i32) -> &mut OpenOptions {
+ self.as_inner_mut().share_mode(access); self
+ }
+}
+
+/// Extension methods for `fs::Metadata` to access the raw fields contained
+/// within.
+#[unstable(feature = "metadata_ext", reason = "recently added API")]
+pub trait MetadataExt {
+ /// Returns the value of the `dwFileAttributes` field of this metadata.
+ ///
+ /// This field contains the file system attribute information for a file
+ /// or directory.
+ fn file_attributes(&self) -> u32;
+
+ /// Returns the value of the `ftCreationTime` field of this metadata.
+ ///
+ /// The returned 64-bit value represents the number of 100-nanosecond
+ /// intervals since January 1, 1601 (UTC).
+ fn creation_time(&self) -> u64;
+
+ /// Returns the value of the `ftLastAccessTime` field of this metadata.
+ ///
+ /// The returned 64-bit value represents the number of 100-nanosecond
+ /// intervals since January 1, 1601 (UTC).
+ fn last_access_time(&self) -> u64;
+
+ /// Returns the value of the `ftLastWriteTime` field of this metadata.
+ ///
+ /// The returned 64-bit value represents the number of 100-nanosecond
+ /// intervals since January 1, 1601 (UTC).
+ fn last_write_time(&self) -> u64;
+
+ /// Returns the value of the `nFileSize{High,Low}` fields of this
+ /// metadata.
+ ///
+ /// The returned value does not have meaning for directories.
+ fn file_size(&self) -> u64;
+}
+
+impl MetadataExt for Metadata {
+ fn file_attributes(&self) -> u32 { self.as_inner().attrs() }
+ fn creation_time(&self) -> u64 { self.as_inner().created() }
+ fn last_access_time(&self) -> u64 { self.as_inner().accessed() }
+ fn last_write_time(&self) -> u64 { self.as_inner().modified() }
+ fn file_size(&self) -> u64 { self.as_inner().size() }
+}
+
+/// Creates a new file symbolic link on the filesystem.
+///
+/// The `dst` path will be a file symbolic link pointing to the `src`
+/// path.
+///
+/// # Examples
+///
+/// ```ignore
+/// use std::os::windows::fs;
+///
+/// # fn foo() -> std::io::Result<()> {
+/// try!(fs::symlink_file("a.txt", "b.txt"));
+/// # Ok(())
+/// # }
+/// ```
+#[stable(feature = "rust1", since = "1.0.0")]
+pub fn symlink_file<P: AsRef<Path>, Q: AsRef<Path>>(src: P, dst: Q)
+ -> io::Result<()> {
+ sys::fs2::symlink_inner(src.as_ref(), dst.as_ref(), false)
+}
+
+/// Creates a new directory symlink on the filesystem.
+///
+/// The `dst` path will be a directory symbolic link pointing to the `src`
+/// path.
+///
+/// # Examples
+///
+/// ```ignore
+/// use std::os::windows::fs;
+///
+/// # fn foo() -> std::io::Result<()> {
+/// try!(fs::symlink_file("a", "b"));
+/// # Ok(())
+/// # }
+/// ```
+#[stable(feature = "rust1", since = "1.0.0")]
+pub fn symlink_dir<P: AsRef<Path>, Q: AsRef<Path>>(src: P, dst: Q)
+ -> io::Result<()> {
+ sys::fs2::symlink_inner(src.as_ref(), dst.as_ref(), true)
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![stable(feature = "rust1", since = "1.0.0")]
+
+use fs;
+use os::windows::raw;
+use net;
+use sys_common::{net2, AsInner, FromInner};
+use sys;
+
+/// Raw HANDLEs.
+#[stable(feature = "rust1", since = "1.0.0")]
+pub type RawHandle = raw::HANDLE;
+
+/// Raw SOCKETs.
+#[stable(feature = "rust1", since = "1.0.0")]
+pub type RawSocket = raw::SOCKET;
+
+/// Extract raw handles.
+#[stable(feature = "rust1", since = "1.0.0")]
+pub trait AsRawHandle {
+ /// Extracts the raw handle, without taking any ownership.
+ #[stable(feature = "rust1", since = "1.0.0")]
+ fn as_raw_handle(&self) -> RawHandle;
+}
+
+/// Construct I/O objects from raw handles.
+#[unstable(feature = "from_raw_os",
+ reason = "recent addition to the std::os::windows::io module")]
+pub trait FromRawHandle {
+ /// Constructs a new I/O object from the specified raw handle.
+ ///
+ /// This function will **consume ownership** of the handle given,
+ /// passing responsibility for closing the handle to the returned
+ /// object.
+ ///
+ /// This function is also unsafe as the primitives currently returned
+ /// have the contract that they are the sole owner of the file
+ /// descriptor they are wrapping. Usage of this function could
+ /// accidentally allow violating this contract which can cause memory
+ /// unsafety in code that relies on it being true.
+ unsafe fn from_raw_handle(handle: RawHandle) -> Self;
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl AsRawHandle for fs::File {
+ fn as_raw_handle(&self) -> RawHandle {
+ self.as_inner().handle().raw() as RawHandle
+ }
+}
+
+#[unstable(feature = "from_raw_os", reason = "trait is unstable")]
+impl FromRawHandle for fs::File {
+ unsafe fn from_raw_handle(handle: RawHandle) -> fs::File {
+ let handle = handle as ::libc::HANDLE;
+ fs::File::from_inner(sys::fs2::File::from_inner(handle))
+ }
+}
+
+/// Extract raw sockets.
+#[stable(feature = "rust1", since = "1.0.0")]
+pub trait AsRawSocket {
+ /// Extracts the underlying raw socket from this object.
+ #[stable(feature = "rust1", since = "1.0.0")]
+ fn as_raw_socket(&self) -> RawSocket;
+}
+
+/// Create I/O objects from raw sockets.
+#[unstable(feature = "from_raw_os", reason = "recent addition to module")]
+pub trait FromRawSocket {
+ /// Creates a new I/O object from the given raw socket.
+ ///
+ /// This function will **consume ownership** of the socket provided and
+ /// it will be closed when the returned object goes out of scope.
+ ///
+ /// This function is also unsafe as the primitives currently returned
+ /// have the contract that they are the sole owner of the file
+ /// descriptor they are wrapping. Usage of this function could
+ /// accidentally allow violating this contract which can cause memory
+ /// unsafety in code that relies on it being true.
+ unsafe fn from_raw_socket(sock: RawSocket) -> Self;
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl AsRawSocket for net::TcpStream {
+ fn as_raw_socket(&self) -> RawSocket {
+ *self.as_inner().socket().as_inner()
+ }
+}
+#[stable(feature = "rust1", since = "1.0.0")]
+impl AsRawSocket for net::TcpListener {
+ fn as_raw_socket(&self) -> RawSocket {
+ *self.as_inner().socket().as_inner()
+ }
+}
+#[stable(feature = "rust1", since = "1.0.0")]
+impl AsRawSocket for net::UdpSocket {
+ fn as_raw_socket(&self) -> RawSocket {
+ *self.as_inner().socket().as_inner()
+ }
+}
+
+#[unstable(feature = "from_raw_os", reason = "trait is unstable")]
+impl FromRawSocket for net::TcpStream {
+ unsafe fn from_raw_socket(sock: RawSocket) -> net::TcpStream {
+ let sock = sys::net::Socket::from_inner(sock);
+ net::TcpStream::from_inner(net2::TcpStream::from_inner(sock))
+ }
+}
+#[unstable(feature = "from_raw_os", reason = "trait is unstable")]
+impl FromRawSocket for net::TcpListener {
+ unsafe fn from_raw_socket(sock: RawSocket) -> net::TcpListener {
+ let sock = sys::net::Socket::from_inner(sock);
+ net::TcpListener::from_inner(net2::TcpListener::from_inner(sock))
+ }
+}
+#[unstable(feature = "from_raw_os", reason = "trait is unstable")]
+impl FromRawSocket for net::UdpSocket {
+ unsafe fn from_raw_socket(sock: RawSocket) -> net::UdpSocket {
+ let sock = sys::net::Socket::from_inner(sock);
+ net::UdpSocket::from_inner(net2::UdpSocket::from_inner(sock))
+ }
+}
--- /dev/null
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Experimental extensions to `std` for Windows.
+//!
+//! For now, this module is limited to extracting handles, file
+//! descriptors, and sockets, but its functionality will grow over
+//! time.
+
+#![stable(feature = "rust1", since = "1.0.0")]
+
+pub mod ffi;
+pub mod fs;
+pub mod io;
+pub mod raw;
+
+/// A prelude for conveniently writing platform-specific code.
+///
+/// Includes all extension traits, and some important type definitions.
+#[stable(feature = "rust1", since = "1.0.0")]
+pub mod prelude {
+ #[doc(no_inline)]
+ pub use super::io::{RawSocket, RawHandle, AsRawSocket, AsRawHandle};
+ #[doc(no_inline)] #[stable(feature = "rust1", since = "1.0.0")]
+ pub use super::ffi::{OsStrExt, OsStringExt};
+ #[doc(no_inline)]
+ pub use super::fs::{OpenOptionsExt, MetadataExt};
+}
--- /dev/null
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Windows-specific primitives
+
+#![unstable(feature = "raw_ext", reason = "recently added API")]
+
+use os::raw;
+
+pub type HANDLE = *mut raw::c_void;
+#[cfg(target_pointer_width = "32")]
+pub type SOCKET = u32;
+#[cfg(target_pointer_width = "64")]
+pub type SOCKET = u64;
use vec::Vec;
pub struct File { handle: Handle }
-pub struct FileAttr { data: c::WIN32_FILE_ATTRIBUTE_DATA }
+
+pub struct FileAttr {
+ data: c::WIN32_FILE_ATTRIBUTE_DATA,
+ is_symlink: bool,
+}
+
+#[derive(Copy, Clone, PartialEq, Eq, Hash)]
+pub enum FileType {
+ Dir, File, Symlink, ReparsePoint
+}
pub struct ReadDir {
handle: FindNextFileHandle,
#[derive(Clone, PartialEq, Eq, Debug)]
pub struct FilePermissions { attrs: libc::DWORD }
+pub struct DirBuilder;
+
impl Iterator for ReadDir {
type Item = io::Result<DirEntry>;
fn next(&mut self) -> Option<io::Result<DirEntry>> {
}
pub fn path(&self) -> PathBuf {
+ self.root.join(&self.file_name())
+ }
+
+ pub fn file_name(&self) -> OsString {
let filename = super::truncate_utf16_at_nul(&self.data.cFileName);
- self.root.join(&<OsString as OsStringExt>::from_wide(filename))
+ OsString::from_wide(filename)
+ }
+
+ pub fn file_type(&self) -> io::Result<FileType> {
+ Ok(FileType::new(self.data.dwFileAttributes,
+ self.data.dwReserved0 == c::IO_REPARSE_TAG_SYMLINK))
+ }
+
+ pub fn metadata(&self) -> io::Result<FileAttr> {
+ Ok(FileAttr {
+ data: c::WIN32_FILE_ATTRIBUTE_DATA {
+ dwFileAttributes: self.data.dwFileAttributes,
+ ftCreationTime: self.data.ftCreationTime,
+ ftLastAccessTime: self.data.ftLastAccessTime,
+ ftLastWriteTime: self.data.ftLastWriteTime,
+ nFileSizeHigh: self.data.nFileSizeHigh,
+ nFileSizeLow: self.data.nFileSizeLow,
+ },
+ is_symlink: self.data.dwReserved0 == c::IO_REPARSE_TAG_SYMLINK,
+ })
}
}
}
impl File {
+ fn open_reparse_point(path: &Path) -> io::Result<File> {
+ let mut opts = OpenOptions::new();
+ opts.read(true);
+ opts.flags_and_attributes(c::FILE_FLAG_OPEN_REPARSE_POINT as i32);
+ File::open(path, &opts)
+ }
+
pub fn open(path: &Path, opts: &OpenOptions) -> io::Result<File> {
let path = to_utf16(path);
let handle = unsafe {
let mut info: c::BY_HANDLE_FILE_INFORMATION = mem::zeroed();
try!(cvt(c::GetFileInformationByHandle(self.handle.raw(),
&mut info)));
- Ok(FileAttr {
+ let mut attr = FileAttr {
data: c::WIN32_FILE_ATTRIBUTE_DATA {
dwFileAttributes: info.dwFileAttributes,
ftCreationTime: info.ftCreationTime,
ftLastWriteTime: info.ftLastWriteTime,
nFileSizeHigh: info.nFileSizeHigh,
nFileSizeLow: info.nFileSizeLow,
- }
- })
+ },
+ is_symlink: false,
+ };
+ if attr.is_reparse_point() {
+ attr.is_symlink = self.is_symlink();
+ }
+ Ok(attr)
}
}
}
pub fn handle(&self) -> &Handle { &self.handle }
+
+ fn is_symlink(&self) -> bool {
+ self.readlink().is_ok()
+ }
+
+ fn readlink(&self) -> io::Result<PathBuf> {
+ let mut space = [0u8; c::MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
+ let mut bytes = 0;
+
+ unsafe {
+ try!(cvt({
+ c::DeviceIoControl(self.handle.raw(),
+ c::FSCTL_GET_REPARSE_POINT,
+ 0 as *mut _,
+ 0,
+ space.as_mut_ptr() as *mut _,
+ space.len() as libc::DWORD,
+ &mut bytes,
+ 0 as *mut _)
+ }));
+ let buf: *const c::REPARSE_DATA_BUFFER = space.as_ptr() as *const _;
+ if (*buf).ReparseTag != c::IO_REPARSE_TAG_SYMLINK {
+ return Err(io::Error::new(io::ErrorKind::Other, "not a symlink"))
+ }
+ let info: *const c::SYMBOLIC_LINK_REPARSE_BUFFER =
+ &(*buf).rest as *const _ as *const _;
+ let path_buffer = &(*info).PathBuffer as *const _ as *const u16;
+ let subst_off = (*info).SubstituteNameOffset / 2;
+ let subst_ptr = path_buffer.offset(subst_off as isize);
+ let subst_len = (*info).SubstituteNameLength / 2;
+ let subst = slice::from_raw_parts(subst_ptr, subst_len as usize);
+
+ Ok(PathBuf::from(OsString::from_wide(subst)))
+ }
+ }
}
impl FromInner<libc::HANDLE> for File {
}
impl FileAttr {
- pub fn is_dir(&self) -> bool {
- self.data.dwFileAttributes & c::FILE_ATTRIBUTE_DIRECTORY != 0
- }
- pub fn is_file(&self) -> bool {
- !self.is_dir()
- }
pub fn size(&self) -> u64 {
((self.data.nFileSizeHigh as u64) << 32) | (self.data.nFileSizeLow as u64)
}
+
pub fn perm(&self) -> FilePermissions {
FilePermissions { attrs: self.data.dwFileAttributes }
}
- pub fn accessed(&self) -> u64 { self.to_ms(&self.data.ftLastAccessTime) }
- pub fn modified(&self) -> u64 { self.to_ms(&self.data.ftLastWriteTime) }
+ pub fn attrs(&self) -> u32 { self.data.dwFileAttributes as u32 }
+
+ pub fn file_type(&self) -> FileType {
+ FileType::new(self.data.dwFileAttributes, self.is_symlink)
+ }
+
+ pub fn created(&self) -> u64 { self.to_u64(&self.data.ftCreationTime) }
+ pub fn accessed(&self) -> u64 { self.to_u64(&self.data.ftLastAccessTime) }
+ pub fn modified(&self) -> u64 { self.to_u64(&self.data.ftLastWriteTime) }
- fn to_ms(&self, ft: &libc::FILETIME) -> u64 {
- // FILETIME is in 100ns intervals and there are 10000 intervals in a
- // millisecond.
- let bits = (ft.dwLowDateTime as u64) | ((ft.dwHighDateTime as u64) << 32);
- bits / 10000
+ fn to_u64(&self, ft: &libc::FILETIME) -> u64 {
+ (ft.dwLowDateTime as u64) | ((ft.dwHighDateTime as u64) << 32)
+ }
+
+ fn is_reparse_point(&self) -> bool {
+ self.data.dwFileAttributes & libc::FILE_ATTRIBUTE_REPARSE_POINT != 0
}
}
}
}
-pub fn mkdir(p: &Path) -> io::Result<()> {
- let p = to_utf16(p);
- try!(cvt(unsafe {
- libc::CreateDirectoryW(p.as_ptr(), ptr::null_mut())
- }));
- Ok(())
+impl FileType {
+ fn new(attrs: libc::DWORD, is_symlink: bool) -> FileType {
+ if attrs & libc::FILE_ATTRIBUTE_REPARSE_POINT != 0 {
+ if is_symlink {
+ FileType::Symlink
+ } else {
+ FileType::ReparsePoint
+ }
+ } else if attrs & c::FILE_ATTRIBUTE_DIRECTORY != 0 {
+ FileType::Dir
+ } else {
+ FileType::File
+ }
+ }
+
+ pub fn is_dir(&self) -> bool { *self == FileType::Dir }
+ pub fn is_file(&self) -> bool { *self == FileType::File }
+ pub fn is_symlink(&self) -> bool { *self == FileType::Symlink }
+}
+
+impl DirBuilder {
+ pub fn new() -> DirBuilder { DirBuilder }
+
+ pub fn mkdir(&self, p: &Path) -> io::Result<()> {
+ let p = to_utf16(p);
+ try!(cvt(unsafe {
+ libc::CreateDirectoryW(p.as_ptr(), ptr::null_mut())
+ }));
+ Ok(())
+ }
}
pub fn readdir(p: &Path) -> io::Result<ReadDir> {
}
pub fn readlink(p: &Path) -> io::Result<PathBuf> {
- let mut opts = OpenOptions::new();
- opts.read(true);
- opts.flags_and_attributes(c::FILE_FLAG_OPEN_REPARSE_POINT as i32);
- let file = try!(File::open(p, &opts));
-
- let mut space = [0u8; c::MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
- let mut bytes = 0;
-
- unsafe {
- try!(cvt({
- c::DeviceIoControl(file.handle.raw(),
- c::FSCTL_GET_REPARSE_POINT,
- 0 as *mut _,
- 0,
- space.as_mut_ptr() as *mut _,
- space.len() as libc::DWORD,
- &mut bytes,
- 0 as *mut _)
- }));
- let buf: *const c::REPARSE_DATA_BUFFER = space.as_ptr() as *const _;
- if (*buf).ReparseTag != c::IO_REPARSE_TAG_SYMLINK {
- return Err(io::Error::new(io::ErrorKind::Other, "not a symlink"))
- }
- let info: *const c::SYMBOLIC_LINK_REPARSE_BUFFER =
- &(*buf).rest as *const _ as *const _;
- let path_buffer = &(*info).PathBuffer as *const _ as *const u16;
- let subst_off = (*info).SubstituteNameOffset / 2;
- let subst_ptr = path_buffer.offset(subst_off as isize);
- let subst_len = (*info).SubstituteNameLength / 2;
- let subst = slice::from_raw_parts(subst_ptr, subst_len as usize);
-
- Ok(PathBuf::from(OsString::from_wide(subst)))
- }
-
+ let file = try!(File::open_reparse_point(p));
+ file.readlink()
}
pub fn symlink(src: &Path, dst: &Path) -> io::Result<()> {
}
pub fn stat(p: &Path) -> io::Result<FileAttr> {
- let p = to_utf16(p);
+ let attr = try!(lstat(p));
+ if attr.data.dwFileAttributes & libc::FILE_ATTRIBUTE_REPARSE_POINT != 0 {
+ let opts = OpenOptions::new();
+ let file = try!(File::open(p, &opts));
+ file.file_attr()
+ } else {
+ Ok(attr)
+ }
+}
+
+pub fn lstat(p: &Path) -> io::Result<FileAttr> {
+ let utf16 = to_utf16(p);
unsafe {
let mut attr: FileAttr = mem::zeroed();
- try!(cvt(c::GetFileAttributesExW(p.as_ptr(),
+ try!(cvt(c::GetFileAttributesExW(utf16.as_ptr(),
c::GetFileExInfoStandard,
&mut attr.data as *mut _ as *mut _)));
+ if attr.is_reparse_point() {
+ attr.is_symlink = File::open_reparse_point(p).map(|f| {
+ f.is_symlink()
+ }).unwrap_or(false);
+ }
Ok(attr)
}
}
}));
Ok(())
}
+
+pub fn canonicalize(p: &Path) -> io::Result<PathBuf> {
+ use sys::c::compat::kernel32::GetFinalPathNameByHandleW;
+
+ let mut opts = OpenOptions::new();
+ opts.read(true);
+ let f = try!(File::open(p, &opts));
+ super::fill_utf16_buf(|buf, sz| unsafe {
+ GetFinalPathNameByHandleW(f.handle.raw(), buf, sz,
+ libc::VOLUME_NAME_DOS)
+ }, |buf| {
+ PathBuf::from(OsString::from_wide(buf))
+ })
+}
use sys_common::thread_local as os;
extern {
+ #[linkage = "extern_weak"]
static __dso_handle: *mut u8;
#[linkage = "extern_weak"]
static __cxa_thread_atexit_impl: *const ();
}
}
-#[unsafe_destructor]
#[unstable(feature = "scoped",
reason = "memory unsafe if destructor is avoided, see #24292")]
impl<'a, T: Send + 'a> Drop for JoinGuard<'a, T> {
key: &'a __impl::KeyInner<T>,
val: *mut T,
}
- #[unsafe_destructor]
- impl<'a, T> Drop for Reset<'a, T> {
+ impl<'a, T> Drop for Reset<'a, T> {
fn drop(&mut self) {
unsafe { self.key.set(self.val) }
}
("fundamental", "1.0.0", Active),
- // Deprecate after snapshot
- // SNAP 5520801
- ("unsafe_destructor", "1.0.0", Active),
-
// A temporary feature gate used to enable parser extensions needed
// to bootstrap fix for #5723.
("issue_5723_bootstrap", "1.0.0", Accepted),
("link_args", Normal),
("macro_escape", Normal),
- ("unsafe_destructor", Gated("unsafe_destructor",
- "`#[unsafe_destructor]` does nothing anymore")),
("staged_api", Gated("staged_api",
"staged_api is for use by rustc only")),
("plugin", Gated("plugin",
#include <stdlib.h>
#if !defined(__WIN32__)
-#include <sys/time.h>
-#include <sys/types.h>
#include <dirent.h>
+#include <pthread.h>
#include <signal.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/types.h>
#include <unistd.h>
-#include <pthread.h>
#else
#include <windows.h>
#include <wincrypt.h>
//include valgrind.h after stdint.h so that uintptr_t is defined for msys2 w64
#include "valgrind/valgrind.h"
-#ifdef __APPLE__
-#if (TARGET_OS_IPHONE)
-extern char **environ;
-#endif
-#endif
-
-#if defined(__FreeBSD__) || defined(__linux__) || defined(__ANDROID__) || \
- defined(__DragonFly__) || defined(__Bitrig__) || defined(__OpenBSD__)
-extern char **environ;
-#endif
-
-#if defined(__WIN32__)
-char**
-rust_env_pairs() {
- return 0;
-}
-#else
-char**
-rust_env_pairs() {
-#if defined(__APPLE__) && !(TARGET_OS_IPHONE)
- char **environ = *_NSGetEnviron();
-#endif
- return environ;
-}
-#endif
-
+#ifndef _WIN32
char*
-#if defined(__WIN32__)
-rust_list_dir_val(WIN32_FIND_DATA* entry_ptr) {
- return entry_ptr->cFileName;
-}
-#else
rust_list_dir_val(struct dirent* entry_ptr) {
return entry_ptr->d_name;
}
+
+int
+rust_dir_get_mode(struct dirent* entry_ptr) {
+#if defined(_DIRENT_HAVE_D_TYPE)
+ switch (entry_ptr->d_type) {
+ case DT_BLK: return S_IFBLK;
+ case DT_CHR: return S_IFCHR;
+ case DT_FIFO: return S_IFIFO;
+ case DT_LNK: return S_IFLNK;
+ case DT_REG: return S_IFREG;
+ case DT_SOCK: return S_IFSOCK;
+ }
#endif
+ return -1;
+}
-#ifndef _WIN32
+ino_t
+rust_dir_get_ino(struct dirent* entry_ptr) {
+ return entry_ptr->d_ino;
+}
DIR*
rust_opendir(char *dirname) {
rust_dirent_t_size() {
return sizeof(struct dirent);
}
-
-#else
-
-void
-rust_opendir() {
-}
-
-void
-rust_readdir() {
-}
-
-void
-rust_dirent_t_size() {
-}
-
#endif
uintptr_t
VALGRIND_STACK_DEREGISTER(id);
}
-#if defined(__WIN32__)
-
-void
-rust_unset_sigprocmask() {
- // empty stub for windows to keep linker happy
-}
-
-#else
-
-void
-rust_unset_sigprocmask() {
- // this can't be safely converted to rust code because the
- // representation of sigset_t is platform-dependent
- sigset_t sset;
- sigemptyset(&sset);
- sigprocmask(SIG_SETMASK, &sset, NULL);
-}
-
-#endif
-
#if defined(__DragonFly__)
#include <errno.h>
// In DragonFly __error() is an inline function and as such
failure_order
));
}
-extern "C" LLVMValueRef LLVMBuildAtomicFence(LLVMBuilderRef B, AtomicOrdering order) {
- return wrap(unwrap(B)->CreateFence(order));
+extern "C" LLVMValueRef LLVMBuildAtomicFence(LLVMBuilderRef B,
+ AtomicOrdering order,
+ SynchronizationScope scope) {
+ return wrap(unwrap(B)->CreateFence(order, scope));
}
extern "C" void LLVMSetDebug(int Enabled) {
+S 2015-04-27 857ef6e
+ bitrig-x86_64 d28e2a5f8b478e69720703e751774f5e728a8edd
+ freebsd-x86_64 18925db56f6298cc190d1f41615ab5871de1dda0
+ linux-i386 0bc8cffdce611fb71fd7d3d8e7cdbfaf748a4f16
+ linux-x86_64 94089740e48167c5975c92c139ae9c286764012f
+ macos-i386 54cc35e76497e6e94fddf38d6e40e9d168491ddb
+ macos-x86_64 43a1c1fba0d1dfee4c2ca310d506f8f5f51b3f6f
+ winnt-i386 3db3adf2eaf37075043ec4ee41a5ea9b88810c44
+ winnt-x86_64 82b6eaea67741517ce6d7901ad2a9fd223c3aaf1
+
S 2015-03-27 5520801
bitrig-x86_64 55a69b0ae5481ccda54c2fcfc54025a0945c4f57
freebsd-x86_64 0910bbad35e213f679d0433884fd51398eb3bc8d
// except according to those terms.
#![crate_type = "rlib"]
+
+#![allow(unused_variables)]
#![omit_gdb_pretty_printer_section]
// no-prefer-dynamic
#![crate_name="issue_2526"]
#![crate_type = "lib"]
-#![feature(unsafe_destructor)]
-
use std::marker;
struct arc_destruct<T: Sync> {
_marker: marker::PhantomData<T>
}
-#[unsafe_destructor]
impl<T: Sync> Drop for arc_destruct<T> {
fn drop(&mut self) {}
}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![crate_type="lib"]
+
+// This is a file that pulls in a separate file as a submodule, where
+// that separate file has many multi-byte characters, to try to
+// encourage the compiler to trip on them.
+
+mod issue24687_mbcs_in_comments;
+
+pub use issue24687_mbcs_in_comments::D;
+
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use std::fmt;
+
+// This ia file with many multi-byte characters, to try to encourage
+// the compiler to trip on them. The Drop implementation below will
+// need to have its source location embedded into the debug info for
+// the output file.
+
+// αααααααααααααααααααααααααααααααααααααααααααααααααααααααααααααααααααααα
+// ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
+// γγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγγ
+// δδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδδ
+// εεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεεε
+
+// ζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζζ
+// ηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηηη
+// θθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθθ
+// ιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιιι
+// κκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκκ
+
+pub struct D<X:fmt::Debug>(pub X);
+
+impl<X:fmt::Debug> Drop for D<X> {
+ fn drop(&mut self) {
+ // λλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλλ
+ println!("Dropping D({:?})", self.0);
+ }
+}
#![feature(std_misc)]
+// We're testing linkage visibility; the compiler warns us, but we want to
+// do the runtime check that these functions aren't exported.
+#![allow(private_no_mangle_fns)]
+
use std::dynamic_lib::DynamicLibrary;
#[no_mangle]
#[no_mangle]
fn bar() { }
+#[allow(dead_code)]
#[no_mangle]
fn baz() { }
fn main() {
let symbols = [' ', 'â–‘', 'â–’', 'â–“', 'â–ˆ', 'â–ˆ'];
- let mut pixels = [0f32; 256*256];
- let n2d = Noise2DContext::new();
+ let mut pixels = Box::new([0f32; 256*256]);
+ let n2d = Box::new(Noise2DContext::new());
for _ in 0..100 {
for y in 0..256 {
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-// ignore-android: FIXME(#10393)
+// ignore-android: FIXME(#10393) hangs without output
// ignore-pretty very bad with line comments
// multi tasking k-nucleotide
-#![allow(bad_style)]
-
use std::ascii::AsciiExt;
use std::cmp::Ordering::{self, Less, Greater, Equal};
use std::collections::HashMap;
}
// sort by key, then by value
- fn sortKV(mut orig: Vec<(Vec<u8> ,f64)> ) -> Vec<(Vec<u8> ,f64)> {
+ fn sort_kv(mut orig: Vec<(Vec<u8> ,f64)> ) -> Vec<(Vec<u8> ,f64)> {
orig.sort_by(|&(ref a, _), &(ref b, _)| a.cmp(b));
orig.sort_by(|&(_, a), &(_, b)| f64_cmp(b, a));
orig
pairs.push(((*key).clone(), pct(val, total)));
}
- let pairs_sorted = sortKV(pairs);
+ let pairs_sorted = sort_kv(pairs);
let mut buffer = String::new();
for &(ref k, v) in &pairs_sorted {
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
// OF THE POSSIBILITY OF SUCH DAMAGE.
-// ignore-android see #10393 #13206
+// ignore-android: FIXME(#10393) hangs without output
#![feature(box_syntax, std_misc, collections)]
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
// OF THE POSSIBILITY OF SUCH DAMAGE.
-// ignore-android see #10393 #13206
+// ignore-android: FIXME(#10393) hangs without output
#![feature(libc, scoped)]
use std::thread;
struct Tables {
- table8: [u8; 1 << 8],
- table16: [u16; 1 << 16]
+ table8: Box<[u8; 1 << 8]>,
+ table16: Box<[u16; 1 << 16]>,
}
impl Tables {
fn new() -> Tables {
- let mut table8 = [0;1 << 8];
+ let mut table8 = Box::new([0;1 << 8]);
for (i, v) in table8.iter_mut().enumerate() {
*v = Tables::computed_cpl8(i as u8);
}
- let mut table16 = [0;1 << 16];
+ let mut table16 = Box::new([0;1 << 16]);
for (i, v) in table16.iter_mut().enumerate() {
*v = (table8[i & 255] as u16) << 8 |
table8[i >> 8] as u16;
fn main() {
let mut data = Vec::with_capacity(1024 * 1024);
- io::stdin().read_to_end(&mut data);
+ io::stdin().read_to_end(&mut data).unwrap();
let tables = &Tables::new();
parallel(mut_dna_seqs(&mut data), |seq| reverse_complement(seq, tables));
io::stdout().write_all(&data).unwrap();
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-#![feature(unsafe_destructor, box_syntax, std_misc, collections)]
+#![feature(box_syntax, std_misc, collections)]
use std::env;
use std::thread;
_l: Box<nillist>,
}
-#[unsafe_destructor]
impl Drop for r {
fn drop(&mut self) {}
}
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-#![feature(unsafe_destructor)]
-
struct defer<'a> {
x: &'a [&'a str],
}
-#[unsafe_destructor]
impl<'a> Drop for defer<'a> {
fn drop(&mut self) {
unsafe {
//
// (Compare against compile-fail/dropck_vec_cycle_checked.rs)
-#![feature(unsafe_destructor)]
-
use std::cell::Cell;
use id::Id;
#[allow(non_snake_case)]
fn CheckId<T:HasId>(t: T) -> CheckId<T> { CheckId{ v: t } }
-#[unsafe_destructor]
impl<T:HasId> Drop for CheckId<T> {
fn drop(&mut self) {
assert!(self.v.count() > 0);
// `'a` in `&'a D<'a>` cannot be satisfied when `D<'a>` implements
// `Drop`.)
-#![feature(unsafe_destructor)]
-
use std::cell::Cell;
struct D<'a> {
fn new(name: String) -> D<'a> { D { name: name, p: Cell::new(None) } }
}
-#[unsafe_destructor]
impl<'a> Drop for D<'a> {
fn drop(&mut self) {
println!("dropping {} whose sibling is {:?}",
// for the error message we see here.)
#![allow(unstable)]
-#![feature(unsafe_destructor)]
extern crate arena;
#[allow(non_snake_case)]
fn CheckId<T:HasId>(t: T) -> CheckId<T> { CheckId{ v: t } }
-#[unsafe_destructor]
impl<T:HasId> Drop for CheckId<T> {
fn drop(&mut self) {
assert!(self.v.count() > 0);
// this was reduced to better understand its error message.)
#![allow(unstable)]
-#![feature(unsafe_destructor)]
extern crate arena;
// interface to CheckId does not (and cannot) know that, and therefore
// when encountering the a value V of type CheckId<S>, we must
// conservatively force the type S to strictly outlive V.
-#[unsafe_destructor]
impl<T:HasId> Drop for CheckId<T> {
fn drop(&mut self) {
assert!(self.v.count() > 0);
//
// (Compare against compile-fail/dropck_arr_cycle_checked.rs)
-#![feature(unsafe_destructor)]
-
use std::cell::Cell;
use id::Id;
#[allow(non_snake_case)]
fn CheckId<T:HasId>(t: T) -> CheckId<T> { CheckId{ v: t } }
-#[unsafe_destructor]
impl<T:HasId> Drop for CheckId<T> {
fn drop(&mut self) {
assert!(self.v.count() > 0);
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-#![feature(unsafe_destructor)]
-
// issue #20126
#[derive(Copy, Clone)] //~ ERROR the trait `Copy` may not be implemented
#[derive(Copy, Clone)] //~ ERROR the trait `Copy` may not be implemented
struct Bar<T>(::std::marker::PhantomData<T>);
-#[unsafe_destructor]
impl<T> Drop for Bar<T> {
fn drop(&mut self) {}
}
+++ /dev/null
-// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-// Test that `#[unsafe_destructor]` attribute is gated by `unsafe_destructor`
-// feature gate.
-//
-// (This test can be removed entirely when we remove the
-// `unsafe_destructor` feature itself.)
-
-struct D<'a>(&'a u32);
-
-#[unsafe_destructor]
-//~^ ERROR `#[unsafe_destructor]` does nothing anymore
-impl<'a> Drop for D<'a> {
- fn drop(&mut self) { }
-}
-
-pub fn main() { }
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Check that one cannot subvert Drop Check rule via a user-defined
+// Clone implementation.
+
+#![allow(unused_variables, unused_assignments)]
+
+struct D<T:Copy>(T, &'static str);
+
+#[derive(Copy)]
+struct S<'a>(&'a D<i32>, &'static str);
+impl<'a> Clone for S<'a> {
+ fn clone(&self) -> S<'a> {
+ println!("cloning `S(_, {})` and thus accessing: {}", self.1, (self.0).0);
+ S(self.0, self.1)
+ }
+}
+
+impl<T:Copy> Drop for D<T> {
+ fn drop(&mut self) {
+ println!("calling Drop for {}", self.1);
+ let _call = self.0.clone();
+ }
+}
+
+fn main() {
+ let (d2, d1);
+ d1 = D(34, "d1");
+ d2 = D(S(&d1, "inner"), "d2"); //~ ERROR `d1` does not live long enough
+}
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-#![feature(unsafe_destructor)]
-
use std::thread;
use std::rc::Rc;
_x: Port<()>,
}
- #[unsafe_destructor]
- impl Drop for foo {
+ impl Drop for foo {
fn drop(&mut self) {}
}
// Issue 8142: Test that Drop impls cannot be specialized beyond the
// predicates attached to the struct/enum definition itself.
-#![feature(unsafe_destructor)]
-
trait Bound { fn foo(&self) { } }
struct K<'l1,'l2> { x: &'l1 i8, y: &'l2 u8 }
struct L<'l1,'l2> { x: &'l1 i8, y: &'l2 u8 }
struct V<Tva, Tvb> { x: *const Tva, y: *const Tvb }
struct W<'l1, 'l2> { x: &'l1 i8, y: &'l2 u8 }
-#[unsafe_destructor]
impl<'al,'adds_bnd:'al> Drop for K<'al,'adds_bnd> { // REJECT
//~^ ERROR The requirement `'adds_bnd : 'al` is added only by the Drop impl.
fn drop(&mut self) { } }
-#[unsafe_destructor]
impl<'al,'adds_bnd> Drop for L<'al,'adds_bnd> where 'adds_bnd:'al { // REJECT
//~^ ERROR The requirement `'adds_bnd : 'al` is added only by the Drop impl.
fn drop(&mut self) { } }
-#[unsafe_destructor]
impl<'ml> Drop for M<'ml> { fn drop(&mut self) { } } // ACCEPT
-#[unsafe_destructor]
impl Drop for N<'static> { fn drop(&mut self) { } } // REJECT
//~^ ERROR Implementations of Drop cannot be specialized
-#[unsafe_destructor]
impl<Cok_nobound> Drop for O<Cok_nobound> { fn drop(&mut self) { } } // ACCEPT
-#[unsafe_destructor]
impl Drop for P<i8> { fn drop(&mut self) { } } // REJECT
//~^ ERROR Implementations of Drop cannot be specialized
-#[unsafe_destructor]
impl<Adds_bnd:Bound> Drop for Q<Adds_bnd> { fn drop(&mut self) { } } // REJECT
//~^ ERROR The requirement `Adds_bnd : Bound` is added only by the Drop impl.
-#[unsafe_destructor]
impl<'rbnd,Adds_rbnd:'rbnd> Drop for R<Adds_rbnd> { fn drop(&mut self) { } } // REJECT
//~^ ERROR The requirement `Adds_rbnd : 'rbnd` is added only by the Drop impl.
-#[unsafe_destructor]
impl<Bs:Bound> Drop for S<Bs> { fn drop(&mut self) { } } // ACCEPT
-#[unsafe_destructor]
impl<'t,Bt:'t> Drop for T<'t,Bt> { fn drop(&mut self) { } } // ACCEPT
impl Drop for U { fn drop(&mut self) { } } // ACCEPT
-#[unsafe_destructor]
impl<One> Drop for V<One,One> { fn drop(&mut self) { } } // REJECT
//~^ERROR Implementations of Drop cannot be specialized
-#[unsafe_destructor]
impl<'lw> Drop for W<'lw,'lw> { fn drop(&mut self) { } } // REJECT
//~^ERROR Implementations of Drop cannot be specialized
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-#![feature(unsafe_destructor)]
-
use std::cell::Cell;
#[derive(Debug)]
i: &'a Cell<isize>,
}
-#[unsafe_destructor]
impl<'a> Drop for r<'a> {
fn drop(&mut self) {
unsafe {
// conditions above to be satisfied, meaning that if the dropck is
// sound, it should reject this code.
-#![feature(unsafe_destructor)]
-
use std::cell::Cell;
use id::Id;
#[allow(non_snake_case)]
fn CheckId<T:HasId>(t: T) -> CheckId<T> { CheckId{ v: t } }
-#[unsafe_destructor]
impl<T:HasId> Drop for CheckId<T> {
fn drop(&mut self) {
assert!(self.v.count() > 0);
// compile-flags:-g
-#![allow(unused_variables)]
-#![allow(dead_code)]
+#![allow(dead_code, unused_variables)]
#![omit_gdb_pretty_printer_section]
#![feature(std_misc, core)]
// compile-flags:-g
-#![allow(unused_variables)]
-#![allow(dead_code)]
+#![allow(dead_code, unused_variables)]
#![omit_gdb_pretty_printer_section]
// This test makes sure that the compiler doesn't crash when trying to assign
// === GDB TESTS ===================================================================================
-// gdb-command:break cross_crate_spans.rs:21
+// gdb-command:break cross_crate_spans.rs:23
// gdb-command:run
// gdb-command:print result
// === LLDB TESTS ==================================================================================
-// lldb-command:b cross_crate_spans.rs:21
+// lldb-command:b cross_crate_spans.rs:23
// lldb-command:run
// lldb-command:print result
// lldb-check:[...]$31 = 45
// lldb-command:continue
-#![allow(unused_variables)]
+#![allow(dead_code, unused_assignments, unused_variables)]
#![omit_gdb_pretty_printer_section]
#[no_stack_check]
// gdb-command: print none
// gdb-check:$6 = None
+#![allow(unused_variables)]
+
fn main() {
// &[]
// gdb-command: print c_style_enum3
// gdb-check:$5 = CStyleEnumVar3
+#![allow(dead_code, unused_variables)]
+
struct RegularStruct {
the_first_field: isize,
the_second_field: f64,
// gdb-command: print none_check2
// gdb-check:$18 = None
+#![allow(dead_code, unused_variables)]
+
use self::CStyleEnum::{CStyleEnumVar1, CStyleEnumVar2, CStyleEnumVar3};
use self::MixedEnum::{MixedEnumCStyleVar, MixedEnumTupleVar, MixedEnumStructVar};
use self::NestedEnum::{NestedVariant1, NestedVariant2};
// gdb-check:type = struct Struct1
// gdb-command:whatis generic_struct1
-// gdb-check:type = struct GenericStruct<type_names::Mod1::Struct2, type_names::Mod1::Mod2::Struct3>
+// gdb-check:type = struct GenericStruct<type_names::mod1::Struct2, type_names::mod1::mod2::Struct3>
// gdb-command:whatis generic_struct2
// gdb-check:type = struct GenericStruct<type_names::Struct1, extern "fastcall" fn(isize) -> usize>
// gdb-check:type = union Enum2
// gdb-command:whatis generic_enum_1
-// gdb-check:type = union Enum3<type_names::Mod1::Struct2>
+// gdb-check:type = union Enum3<type_names::mod1::Struct2>
// gdb-command:whatis generic_enum_2
// gdb-check:type = union Enum3<type_names::Struct1>
// TUPLES
// gdb-command:whatis tuple1
-// gdb-check:type = struct (u32, type_names::Struct1, type_names::Mod1::Mod2::Enum3<type_names::Mod1::Struct2>)
+// gdb-check:type = struct (u32, type_names::Struct1, type_names::mod1::mod2::Enum3<type_names::mod1::Struct2>)
// gdb-command:whatis tuple2
-// gdb-check:type = struct ((type_names::Struct1, type_names::Mod1::Mod2::Struct3), type_names::Mod1::Enum2, char)
+// gdb-check:type = struct ((type_names::Struct1, type_names::mod1::mod2::Struct3), type_names::mod1::Enum2, char)
// BOX
// gdb-check:type = struct (Box<f32>, i32)
// gdb-command:whatis box2
-// gdb-check:type = struct (Box<type_names::Mod1::Mod2::Enum3<f32>>, i32)
+// gdb-check:type = struct (Box<type_names::mod1::mod2::Enum3<f32>>, i32)
// REFERENCES
// gdb-check:type = struct (&mut type_names::Struct1, i32)
// gdb-command:whatis mut_ref2
-// gdb-check:type = struct (&mut type_names::GenericStruct<type_names::Mod1::Enum2, f64>, i32)
+// gdb-check:type = struct (&mut type_names::GenericStruct<type_names::mod1::Enum2, f64>, i32)
// RAW POINTERS
// gdb-check:type = struct (*mut isize, isize)
// gdb-command:whatis mut_ptr3
-// gdb-check:type = struct (*mut type_names::Mod1::Mod2::Enum3<type_names::Struct1>, isize)
+// gdb-check:type = struct (*mut type_names::mod1::mod2::Enum3<type_names::Struct1>, isize)
// gdb-command:whatis const_ptr1
// gdb-check:type = struct (*const type_names::Struct1, isize)
// gdb-check:type = struct (*const isize, isize)
// gdb-command:whatis const_ptr3
-// gdb-check:type = struct (*const type_names::Mod1::Mod2::Enum3<type_names::Struct1>, isize)
+// gdb-check:type = struct (*const type_names::mod1::mod2::Enum3<type_names::Struct1>, isize)
// VECTORS
// gdb-check:type = struct &[usize]
// gdb-command:whatis slice2
-// gdb-check:type = struct &[type_names::Mod1::Enum2]
+// gdb-check:type = struct &[type_names::mod1::Enum2]
// TRAITS
// gdb-check:type = struct &mut Trait1
// gdb-command:whatis generic_box_trait
-// gdb-check:type = struct Box<Trait2<i32, type_names::Mod1::Struct2>>
+// gdb-check:type = struct Box<Trait2<i32, type_names::mod1::Struct2>>
// gdb-command:whatis generic_ref_trait
// gdb-check:type = struct &Trait2<type_names::Struct1, type_names::Struct1>
// gdb-command:whatis generic_mut_ref_trait
-// gdb-check:type = struct &mut Trait2<type_names::Mod1::Mod2::Struct3, type_names::GenericStruct<usize, isize>>
+// gdb-check:type = struct &mut Trait2<type_names::mod1::mod2::Struct3, type_names::GenericStruct<usize, isize>>
// BARE FUNCTIONS
// gdb-command:whatis rust_fn
-// gdb-check:type = struct (fn(core::option::Option<isize>, core::option::Option<&type_names::Mod1::Struct2>), usize)
+// gdb-check:type = struct (fn(core::option::Option<isize>, core::option::Option<&type_names::mod1::Struct2>), usize)
// gdb-command:whatis extern_c_fn
// gdb-check:type = struct (extern "C" fn(isize), usize)
// gdb-check:type = struct (extern "C" fn() -> type_names::Struct1, usize)
// gdb-command:whatis unsafe_fn_with_return_value
-// gdb-check:type = struct (unsafe fn(type_names::GenericStruct<u16, u8>) -> type_names::Mod1::Struct2, usize)
+// gdb-check:type = struct (unsafe fn(type_names::GenericStruct<u16, u8>) -> type_names::mod1::Struct2, usize)
// gdb-command:whatis extern_stdcall_fn_with_return_value
// gdb-check:type = struct (extern "stdcall" fn(Box<isize>) -> usize, usize)
// gdb-check:type = struct (fn(isize) -> isize, usize)
// gdb-command:whatis generic_function_struct3
-// gdb-check:type = struct (fn(type_names::Mod1::Mod2::Struct3) -> type_names::Mod1::Mod2::Struct3, usize)
+// gdb-check:type = struct (fn(type_names::mod1::mod2::Struct3) -> type_names::mod1::mod2::Struct3, usize)
// gdb-command:whatis variadic_function
// gdb-check:type = struct (unsafe extern "C" fn(*const u8, ...) -> isize, usize)
// gdb-check:type = struct (closure, usize)
#![feature(box_syntax)]
+#![allow(unused_variables)]
#![omit_gdb_pretty_printer_section]
-use self::Enum1::{Variant1_1, Variant1_2};
+use self::Enum1::{Variant1, Variant2};
use std::marker::PhantomData;
use std::ptr;
struct GenericStruct<T1, T2>(PhantomData<(T1,T2)>);
enum Enum1 {
- Variant1_1,
- Variant1_2(isize)
+ Variant1,
+ Variant2(isize),
}
-mod Mod1 {
- pub use self::Enum2::{Variant2_1, Variant2_2};
+mod mod1 {
+ pub use self::Enum2::{Variant1, Variant2};
pub struct Struct2;
pub enum Enum2 {
- Variant2_1,
- Variant2_2(super::Struct1)
+ Variant1,
+ Variant2(super::Struct1),
}
- pub mod Mod2 {
- pub use self::Enum3::{Variant3_1, Variant3_2};
+ pub mod mod2 {
+ pub use self::Enum3::{Variant1, Variant2};
pub struct Struct3;
pub enum Enum3<T> {
- Variant3_1,
- Variant3_2(T),
+ Variant1,
+ Variant2(T),
}
}
}
impl Trait1 for isize {}
impl<T1, T2> Trait2<T1, T2> for isize {}
-fn rust_fn(_: Option<isize>, _: Option<&Mod1::Struct2>) {}
+fn rust_fn(_: Option<isize>, _: Option<&mod1::Struct2>) {}
extern "C" fn extern_c_fn(_: isize) {}
unsafe fn unsafe_fn(_: Result<char, f64>) {}
extern "stdcall" fn extern_stdcall_fn() {}
fn rust_fn_with_return_value(_: f64) -> usize { 4 }
extern "C" fn extern_c_fn_with_return_value() -> Struct1 { Struct1 }
-unsafe fn unsafe_fn_with_return_value(_: GenericStruct<u16, u8>) -> Mod1::Struct2 { Mod1::Struct2 }
+unsafe fn unsafe_fn_with_return_value(_: GenericStruct<u16, u8>) -> mod1::Struct2 { mod1::Struct2 }
extern "stdcall" fn extern_stdcall_fn_with_return_value(_: Box<isize>) -> usize { 0 }
fn generic_function<T>(x: T) -> T { x }
+#[allow(improper_ctypes)]
extern {
fn printf(_:*const u8, ...) -> isize;
}
// Structs
let simple_struct = Struct1;
- let generic_struct1: GenericStruct<Mod1::Struct2, Mod1::Mod2::Struct3> =
+ let generic_struct1: GenericStruct<mod1::Struct2, mod1::mod2::Struct3> =
GenericStruct(PhantomData);
let generic_struct2: GenericStruct<Struct1, extern "fastcall" fn(isize) -> usize> =
GenericStruct(PhantomData);
- let mod_struct = Mod1::Struct2;
+ let mod_struct = mod1::Struct2;
// Enums
- let simple_enum_1 = Variant1_1;
- let simple_enum_2 = Variant1_2(0);
- let simple_enum_3 = Mod1::Variant2_2(Struct1);
+ let simple_enum_1 = Variant1;
+ let simple_enum_2 = Variant2(0);
+ let simple_enum_3 = mod1::Variant2(Struct1);
- let generic_enum_1: Mod1::Mod2::Enum3<Mod1::Struct2> = Mod1::Mod2::Variant3_1;
- let generic_enum_2 = Mod1::Mod2::Variant3_2(Struct1);
+ let generic_enum_1: mod1::mod2::Enum3<mod1::Struct2> = mod1::mod2::Variant1;
+ let generic_enum_2 = mod1::mod2::Variant2(Struct1);
// Tuples
- let tuple1 = (8u32, Struct1, Mod1::Mod2::Variant3_2(Mod1::Struct2));
- let tuple2 = ((Struct1, Mod1::Mod2::Struct3), Mod1::Variant2_1, 'x');
+ let tuple1 = (8u32, Struct1, mod1::mod2::Variant2(mod1::Struct2));
+ let tuple2 = ((Struct1, mod1::mod2::Struct3), mod1::Variant1, 'x');
// Box
let box1 = (box 1f32, 0i32);
- let box2 = (box Mod1::Mod2::Variant3_2(1f32), 0i32);
+ let box2 = (box mod1::mod2::Variant2(1f32), 0i32);
// References
let ref1 = (&Struct1, 0i32);
let ref2 = (&GenericStruct::<char, Struct1>(PhantomData), 0i32);
let mut mut_struct1 = Struct1;
- let mut mut_generic_struct = GenericStruct::<Mod1::Enum2, f64>(PhantomData);
+ let mut mut_generic_struct = GenericStruct::<mod1::Enum2, f64>(PhantomData);
let mut_ref1 = (&mut mut_struct1, 0i32);
let mut_ref2 = (&mut mut_generic_struct, 0i32);
// Raw Pointers
let mut_ptr1: (*mut Struct1, isize) = (ptr::null_mut(), 0);
let mut_ptr2: (*mut isize, isize) = (ptr::null_mut(), 0);
- let mut_ptr3: (*mut Mod1::Mod2::Enum3<Struct1>, isize) = (ptr::null_mut(), 0);
+ let mut_ptr3: (*mut mod1::mod2::Enum3<Struct1>, isize) = (ptr::null_mut(), 0);
let const_ptr1: (*const Struct1, isize) = (ptr::null(), 0);
let const_ptr2: (*const isize, isize) = (ptr::null(), 0);
- let const_ptr3: (*const Mod1::Mod2::Enum3<Struct1>, isize) = (ptr::null(), 0);
+ let const_ptr3: (*const mod1::mod2::Enum3<Struct1>, isize) = (ptr::null(), 0);
// Vectors
let fixed_size_vec1 = ([Struct1, Struct1, Struct1], 0i16);
let vec1 = vec![0_usize, 2, 3];
let slice1 = &*vec1;
- let vec2 = vec![Mod1::Variant2_2(Struct1)];
+ let vec2 = vec![mod1::Variant2(Struct1)];
let slice2 = &*vec2;
// Trait Objects
let mut mut_int1 = 0_isize;
let mut_ref_trait = (&mut mut_int1) as &mut Trait1;
- let generic_box_trait = (box 0_isize) as Box<Trait2<i32, Mod1::Struct2>>;
+ let generic_box_trait = (box 0_isize) as Box<Trait2<i32, mod1::Struct2>>;
let generic_ref_trait = (&0_isize) as &Trait2<Struct1, Struct1>;
let mut generic_mut_ref_trait_impl = 0_isize;
let generic_mut_ref_trait = (&mut generic_mut_ref_trait_impl) as
- &mut Trait2<Mod1::Mod2::Struct3, GenericStruct<usize, isize>>;
+ &mut Trait2<mod1::mod2::Struct3, GenericStruct<usize, isize>>;
// Bare Functions
let rust_fn = (rust_fn, 0_usize);
let extern_stdcall_fn_with_return_value = (extern_stdcall_fn_with_return_value, 0_usize);
let generic_function_int = (generic_function::<isize>, 0_usize);
- let generic_function_struct3 = (generic_function::<Mod1::Mod2::Struct3>, 0_usize);
+ let generic_function_struct3 = (generic_function::<mod1::mod2::Struct3>, 0_usize);
let variadic_function = (printf, 0_usize);
// lldb-command:print padded_struct
// lldb-check:[...]$5 = &[AStruct { x: 10, y: 11, z: 12 }, AStruct { x: 13, y: 14, z: 15 }]
-#![allow(unused_variables)]
+#![allow(dead_code, unused_variables)]
#![omit_gdb_pretty_printer_section]
struct AStruct {
// aux-build:issue-13560-2.rs
// aux-build:issue-13560-3.rs
// ignore-stage1
+// ignore-musl
// Regression test for issue #13560, the test itself is all in the dependent
// libraries. The fail which previously failed to compile is the one numbered 3.
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-
-#![feature(unsafe_destructor)]
#![feature(unsafe_no_drop_flag)]
use std::mem::size_of;
a: T
}
-#[unsafe_destructor]
impl<T> Drop for Test<T> {
fn drop(&mut self) { }
}
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-#![feature(unsafe_destructor)]
-
struct S<T> {
x: T
}
-#[unsafe_destructor]
impl<T> ::std::ops::Drop for S<T> {
fn drop(&mut self) {
println!("bye");
// shows a similar setup, but restricts `f` so that the struct `C<'a>`
// is force-fed a lifetime equal to that of the borrowed arena.
-
#![allow(unstable)]
-#![feature(unsafe_destructor, rustc_private)]
+#![feature(rustc_private)]
extern crate arena;
// interface to CheckId does not (and cannot) know that, and therefore
// when encountering the a value V of type CheckId<S>, we must
// conservatively force the type S to strictly outlive V.
-#[unsafe_destructor]
impl<T:HasId> Drop for CheckId<T> {
fn drop(&mut self) {
assert!(self.v.count() > 0);
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-
-#![allow(unknown_features)]
#![feature(box_syntax)]
-#![feature(unsafe_destructor)]
use std::cell::Cell;
struct BoxR<'a> { x: r<'a> }
-#[unsafe_destructor]
impl<'a> Drop for r<'a> {
fn drop(&mut self) {
self.i.set(self.i.get() + 1)
assert_eq!(cttz32(100), 2);
assert_eq!(cttz64(100), 2);
- assert_eq!(cttz8(-1), 0);
- assert_eq!(cttz16(-1), 0);
- assert_eq!(cttz32(-1), 0);
- assert_eq!(cttz64(-1), 0);
-
assert_eq!(bswap16(0x0A0B), 0x0B0A);
assert_eq!(bswap32(0x0ABBCC0D), 0x0DCCBB0A);
assert_eq!(bswap64(0x0122334455667708), 0x0877665544332201);
// aux-build:issue-12133-rlib.rs
// aux-build:issue-12133-dylib.rs
// aux-build:issue-12133-dylib2.rs
+// ignore-musl
// pretty-expanded FIXME #23616
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-
-#![feature(unsafe_destructor)]
-
static mut DROP_RAN: bool = false;
trait Bar {
struct Foo<B: Bar>(B);
-#[unsafe_destructor]
impl<B: Bar> Drop for Foo<B> {
fn drop(&mut self) {
unsafe {
// pretty-expanded FIXME #23616
-#![feature(unsafe_destructor, rustc_private)]
+#![feature(rustc_private)]
extern crate serialize;
v: T,
}
-#[unsafe_destructor]
impl<T: Encodable> Drop for Foo<T> {
fn drop(&mut self) {
json::encode(&self.v);
// ignore-pretty
-#![feature(unsafe_destructor)]
-
use std::rc::Rc;
use std::cell::Cell;
}
}
-#[unsafe_destructor] // because Field isn't Send
impl Drop for Field {
fn drop(&mut self) {
println!("Dropping field {}", self.number);
_three: Field
}
-#[unsafe_destructor] // because HasDropImpl isn't Send
impl Drop for HasDropImpl {
fn drop(&mut self) {
println!("HasDropImpl.drop()");
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-
-#![feature(unsafe_destructor)]
-
struct Leak<'a> {
dropped: &'a mut bool
}
-#[unsafe_destructor]
impl<'a> Drop for Leak<'a> {
fn drop(&mut self) {
*self.dropped = true;
// except according to those terms.
//
-#![feature(unsafe_destructor, std_misc)]
+#![feature(std_misc)]
pub type Task = isize;
p: Option<*const packet<T>>,
}
- #[unsafe_destructor]
- impl<T:Send> Drop for send_packet<T> {
+ impl<T:Send> Drop for send_packet<T> {
fn drop(&mut self) {
unsafe {
if self.p != None {
p: Option<*const packet<T>>,
}
- #[unsafe_destructor]
- impl<T:Send> Drop for recv_packet<T> {
+ impl<T:Send> Drop for recv_packet<T> {
fn drop(&mut self) {
unsafe {
if self.p != None {
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-
-#![feature(unsafe_destructor)]
-
use std::cell::Cell;
// This test should behave exactly like issue-2735-3
b: &'a Cell<bool>,
}
-#[unsafe_destructor]
impl<'a> Drop for defer<'a> {
fn drop(&mut self) {
self.b.set(true);
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-
-#![feature(unsafe_destructor)]
-
use std::cell::Cell;
// This test should behave exactly like issue-2735-2
b: &'a Cell<bool>,
}
-#[unsafe_destructor]
impl<'a> Drop for defer<'a> {
fn drop(&mut self) {
self.b.set(true);
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-#![feature(unsafe_destructor)]
-
trait X {
fn call<T: std::fmt::Debug>(&self, x: &T);
fn default_method<T: std::fmt::Debug>(&self, x: &T) {
}
}
-#[unsafe_destructor]
impl<T: X + std::fmt::Debug> Drop for Z<T> {
fn drop(&mut self) {
// These statements used to cause an ICE.
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-
-#![feature(unsafe_destructor)]
-
use std::cell::Cell;
struct r<'a> {
b: &'a Cell<isize>,
}
-#[unsafe_destructor]
impl<'a> Drop for r<'a> {
fn drop(&mut self) {
self.b.set(self.b.get() + 1);
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// aux-build:issue24687_lib.rs
+
+extern crate issue24687_lib as d;
+
+fn main() {
+ // Create a d, which has a destructor whose body will be trans'ed
+ // into the generated code here, and thus the local debuginfo will
+ // need references into the original source locations from
+ // `importer` above.
+ let _d = d::D("Hi");
+}
// except according to those terms.
// aux-build:linkage-visibility.rs
-// ignore-android: FIXME(#10379)
+// ignore-android: FIXME(#10356)
// ignore-windows: std::dynamic_lib does not work on Windows well
+// ignore-musl
#![feature(std_misc)]
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-
-#![feature(unsafe_destructor)]
-
// Make sure the destructor is run for newtype structs.
use std::cell::Cell;
struct Foo<'a>(&'a Cell<isize>);
-#[unsafe_destructor]
impl<'a> Drop for Foo<'a> {
fn drop(&mut self) {
let Foo(i) = *self;
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-
-#![feature(unsafe_destructor)]
-
use std::cell::Cell;
struct dtor<'a> {
x: &'a Cell<isize>,
}
-#[unsafe_destructor]
impl<'a> Drop for dtor<'a> {
fn drop(&mut self) {
self.x.set(self.x.get() - 1);
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-//ignore-android
-//ignore-freebsd
-//ignore-ios
-//ignore-dragonfly
-//ignore-bitrig
+// ignore-android
+// ignore-freebsd
+// ignore-ios
+// ignore-dragonfly
+// ignore-bitrig
+// ignore-musl
#![feature(asm)]
// pretty-expanded FIXME #23616
-#![feature(unsafe_destructor)]
-
use std::marker;
pub struct Foo<T>(marker::PhantomData<T>);
}
}
-#[unsafe_destructor]
impl<T> Drop for Foo<T> {
fn drop(&mut self) {
self.next();
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-#![feature(unsafe_destructor)]
-
use std::cell::Cell;
#[derive(Debug)]
i: &'a Cell<isize>,
}
-#[unsafe_destructor]
impl<'a> Drop for r<'a> {
fn drop(&mut self) {
self.i.set(self.i.get() + 1);
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-#![feature(unsafe_destructor)]
-
use std::cell::Cell;
struct shrinky_pointer<'a> {
i: &'a Cell<isize>,
}
-#[unsafe_destructor]
impl<'a> Drop for shrinky_pointer<'a> {
fn drop(&mut self) {
println!("Hello!"); self.i.set(self.i.get() - 1);
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-
-#![feature(unsafe_destructor)]
-
// Ensures that class dtors run if the object is inside an enum
// variant
}
-#[unsafe_destructor]
impl<'a> Drop for close_res<'a> {
fn drop(&mut self) {
self.i.set(false);
// Test accessing external items from multiple compilation units.
+extern crate sepcomp_extern_lib;
-#[link(name = "sepcomp_extern_lib")]
extern {
#[allow(ctypes)]
fn foo() -> usize;
#![allow(unused_mut)]
#![feature(collections)]
+#![feature(collections_drain)]
extern crate collections;
all_sync_send!(VecMap::<usize>::new(), iter, iter_mut, drain, into_iter, keys, values);
- all_sync_send!(Vec::<usize>::new(), into_iter, drain);
+ all_sync_send!(Vec::<usize>::new(), into_iter);
+ is_sync_send!(Vec::<usize>::new(), drain(..));
}
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-
-#![feature(unsafe_destructor)]
-
// Test that we are able to infer a suitable kind for this `move`
// closure that is just called (`FnOnce`).
struct DropMe<'a>(&'a mut i32);
-#[unsafe_destructor]
impl<'a> Drop for DropMe<'a> {
fn drop(&mut self) {
*self.0 += 1;
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-
-#![feature(unsafe_destructor)]
-
// Test that we are able to infer a suitable kind for this closure
// that is just called (`FnOnce`).
struct DropMe<'a>(&'a mut i32);
-#[unsafe_destructor]
impl<'a> Drop for DropMe<'a> {
fn drop(&mut self) {
*self.0 += 1;
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-
-#![feature(unsafe_destructor)]
-
use std::cell::Cell;
// Make sure that destructors get run on slice literals
x: &'a Cell<isize>,
}
-#[unsafe_destructor]
impl<'a> Drop for foo<'a> {
fn drop(&mut self) {
self.x.set(self.x.get() + 1);
projects / rust.git / commitdiff