Auto merge of #41847 - alexcrichton:less-unstable-annotations, r=eddyb

rustc: Add a new `-Z force-unstable-if-unmarked` flag

This commit adds a new `-Z` flag to the compiler for use when bootstrapping the
compiler itself. We want to be able to use crates.io crates, but we also want
the usage of such crates to be as ergonomic as possible! To that end compiler
crates are a little tricky in that the crates.io crates are not annotated as
unstable, nor do they expect to pull in unstable dependencies.

To cover all these situations it's intended that the compiler will forever now
bootstrap with `-Z force-unstable-if-unmarked`. This flags serves a dual purpose
of forcing crates.io crates to themselves be unstable while also allowing them
to use other "unstable" crates.io crates. This should mean that adding a
dependency to compiler no longer requires upstream modification with
unstable/staged_api attributes for inclusion!

diff --git a/src/bootstrap/bin/rustc.rs b/src/bootstrap/bin/rustc.rs
index 62b7f6cb72e3baf51199d72942eb65d069a4fa89..906c468241ae9d765fc006a8fb331c905bbd11d6 100644 (file)
--- a/src/bootstrap/bin/rustc.rs
+++ b/src/bootstrap/bin/rustc.rs
@@ -194,6 +194,8 @@ fn main() {
                 // do that we pass a weird flag to the compiler to get it to do
                 // so. Note that this is definitely a hack, and we should likely
                 // flesh out rpath support more fully in the future.
+                //
+                // FIXME: remove condition after next stage0
                 if stage != "0" {
                     cmd.arg("-Z").arg("osx-rpath-install-name");
                 }
@@ -218,6 +220,17 @@ fn main() {
             cmd.arg("-Z").arg("unstable-options");
             cmd.arg("-C").arg("target-feature=+crt-static");
         }
+
+        // Force all crates compiled by this compiler to (a) be unstable and (b)
+        // allow the `rustc_private` feature to link to other unstable crates
+        // also in the sysroot.
+        //
+        // FIXME: remove condition after next stage0
+        if env::var_os("RUSTC_FORCE_UNSTABLE").is_some() {
+            if stage != "0" {
+                cmd.arg("-Z").arg("force-unstable-if-unmarked");
+            }
+        }
     }
 
     if verbose > 1 {

diff --git a/src/bootstrap/lib.rs b/src/bootstrap/lib.rs
index 017d4015134d0371e209157938c184a707d46a99..ea0b521a2ce6934b8dc6fc96b9bba97651bb00cf 100644 (file)
--- a/src/bootstrap/lib.rs
+++ b/src/bootstrap/lib.rs
@@ -479,7 +479,8 @@ fn cargo(&self,
         // compiled with debuginfo.
         if mode != Mode::Tool {
              cargo.env("RUSTC_DEBUGINFO", self.config.rust_debuginfo.to_string())
-                  .env("RUSTC_DEBUGINFO_LINES", self.config.rust_debuginfo_lines.to_string());
+                  .env("RUSTC_DEBUGINFO_LINES", self.config.rust_debuginfo_lines.to_string())
+                  .env("RUSTC_FORCE_UNSTABLE", "1");
         }
 
         // Enable usage of unstable features
@@ -524,7 +525,9 @@ fn cargo(&self,
         // the comipiler, libs, and tests are stable and we don't want to make
         // their deps unstable (since this would break the first invariant
         // above).
-        if mode != Mode::Tool {
+        //
+        // FIXME: remove this after next stage0
+        if mode != Mode::Tool && stage == 0 {
             cargo.env("RUSTBUILD_UNSTABLE", "1");
         }
 

diff --git a/src/libarena/lib.rs b/src/libarena/lib.rs
index 321fa2edd56c7717e9bb2aaa243392d175b5feb1..c4c1635aa2a5a34cdfeae7b881536d008823f049 100644 (file)
--- a/src/libarena/lib.rs
+++ b/src/libarena/lib.rs
@@ -19,7 +19,7 @@
 //! objects of a single type.
 
 #![crate_name = "arena"]
-#![unstable(feature = "rustc_private", issue = "27812")]
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
 #![crate_type = "rlib"]
 #![crate_type = "dylib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -32,7 +32,7 @@
 #![feature(core_intrinsics)]
 #![feature(dropck_eyepatch)]
 #![feature(generic_param_attrs)]
-#![feature(staged_api)]
+#![cfg_attr(stage0, feature(staged_api))]
 #![cfg_attr(test, feature(test))]
 
 #![allow(deprecated)]

diff --git a/src/libflate/lib.rs b/src/libflate/lib.rs
index 3619be82829cade3559577dd57a0f9fe71da2d52..e0bea884f31c5a667245b373ffcc8744261f0fbb 100644 (file)
--- a/src/libflate/lib.rs
+++ b/src/libflate/lib.rs
@@ -15,7 +15,7 @@
 //! [mz]: https://code.google.com/p/miniz/
 
 #![crate_name = "flate"]
-#![unstable(feature = "rustc_private", issue = "27812")]
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
 #![crate_type = "rlib"]
 #![crate_type = "dylib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -25,7 +25,7 @@
 #![deny(warnings)]
 
 #![feature(libc)]
-#![feature(staged_api)]
+#![cfg_attr(stage0, feature(staged_api))]
 #![feature(unique)]
 #![cfg_attr(test, feature(rand))]
 

diff --git a/src/libfmt_macros/lib.rs b/src/libfmt_macros/lib.rs
index f5a687de64e486866ebf5dc9d519de567bca09f8..641a42b08188f8f64b9abfc3e8ee71e2dd798765 100644 (file)
--- a/src/libfmt_macros/lib.rs
+++ b/src/libfmt_macros/lib.rs
@@ -15,7 +15,7 @@
 //! generated instead.
 
 #![crate_name = "fmt_macros"]
-#![unstable(feature = "rustc_private", issue = "27812")]
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
 #![crate_type = "rlib"]
 #![crate_type = "dylib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -25,7 +25,7 @@
        test(attr(deny(warnings))))]
 #![deny(warnings)]
 
-#![feature(staged_api)]
+#![cfg_attr(stage0, feature(staged_api))]
 #![feature(unicode)]
 
 pub use self::Piece::*;

diff --git a/src/libgetopts/lib.rs b/src/libgetopts/lib.rs
index a5cd9fab2cf4bca92f621174243f803c904c6b0d..c69c68ba59c011a65e6b3aaa873f4fdb690d584e 100644 (file)
--- a/src/libgetopts/lib.rs
+++ b/src/libgetopts/lib.rs
@@ -78,9 +78,9 @@
 //! ```
 
 #![crate_name = "getopts"]
-#![unstable(feature = "rustc_private",
+#![cfg_attr(stage0, unstable(feature = "rustc_private",
             reason = "use the crates.io `getopts` library instead",
-            issue = "27812")]
+            issue = "27812"))]
 #![crate_type = "rlib"]
 #![crate_type = "dylib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -91,7 +91,7 @@
 
 #![deny(missing_docs)]
 #![deny(warnings)]
-#![feature(staged_api)]
+#![cfg_attr(stage0, feature(staged_api))]
 
 use self::Name::*;
 use self::HasArg::*;

diff --git a/src/libgraphviz/lib.rs b/src/libgraphviz/lib.rs
index 1b2c7775185f78d9dbf9e318236f8d3e4e5c0426..2c6744e7c90533d7cf045c9fab97b9e294e3fb2c 100644 (file)
--- a/src/libgraphviz/lib.rs
+++ b/src/libgraphviz/lib.rs
@@ -284,8 +284,8 @@
 //! * [DOT language](http://www.graphviz.org/doc/info/lang.html)
 
 #![crate_name = "graphviz"]
-#![unstable(feature = "rustc_private", issue = "27812")]
-#![feature(staged_api)]
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(staged_api))]
 #![crate_type = "rlib"]
 #![crate_type = "dylib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",

diff --git a/src/libproc_macro_plugin/lib.rs b/src/libproc_macro_plugin/lib.rs
index a6dad64125331cc4c6ab5d903615fffbe8be4389..68c5d49591839216c8e4dec12b29b084ea7529d0 100644 (file)
--- a/src/libproc_macro_plugin/lib.rs
+++ b/src/libproc_macro_plugin/lib.rs
@@ -72,7 +72,7 @@
 //! }
 //! ```
 #![crate_name = "proc_macro_plugin"]
-#![unstable(feature = "rustc_private", issue = "27812")]
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
 #![feature(plugin_registrar)]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
@@ -81,9 +81,9 @@
        html_root_url = "https://doc.rust-lang.org/nightly/")]
 #![deny(warnings)]
 
-#![feature(staged_api)]
+#![cfg_attr(stage0, feature(staged_api))]
 #![feature(rustc_diagnostic_macros)]
-#![feature(rustc_private)]
+#![cfg_attr(stage0, feature(rustc_private))]
 
 extern crate rustc_plugin;
 extern crate syntax;

diff --git a/src/librustc/lib.rs b/src/librustc/lib.rs
index d3954326e7b721c28586f0c001bbc82d3e703a6c..5cf26ea8bfca596db6575dc9ec4cc46066f1cc88 100644 (file)
--- a/src/librustc/lib.rs
+++ b/src/librustc/lib.rs
@@ -15,7 +15,6 @@
 //! This API is completely unstable and subject to change.
 
 #![crate_name = "rustc"]
-#![unstable(feature = "rustc_private", issue = "27812")]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -36,15 +35,17 @@
 #![feature(nonzero)]
 #![feature(quote)]
 #![feature(rustc_diagnostic_macros)]
-#![feature(rustc_private)]
 #![feature(slice_patterns)]
 #![feature(specialization)]
-#![feature(staged_api)]
 #![feature(unboxed_closures)]
 #![feature(discriminant_value)]
 #![feature(sort_unstable)]
 #![feature(trace_macros)]
 
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(rustc_private))]
+#![cfg_attr(stage0, feature(staged_api))]
+
 #![recursion_limit="128"]
 
 extern crate arena;

diff --git a/src/librustc/middle/cstore.rs b/src/librustc/middle/cstore.rs
index da899a9130c8bb1e1fee34dbbaa26e51b59c4e89..569b1aeeb09d7ca1a2e2323746295a89b24708c7 100644 (file)
--- a/src/librustc/middle/cstore.rs
+++ b/src/librustc/middle/cstore.rs
@@ -233,7 +233,6 @@ fn dylib_dependency_formats(&self, cnum: CrateNum)
     fn export_macros(&self, cnum: CrateNum);
     fn lang_items(&self, cnum: CrateNum) -> Vec<(DefIndex, usize)>;
     fn missing_lang_items(&self, cnum: CrateNum) -> Vec<lang_items::LangItem>;
-    fn is_staged_api(&self, cnum: CrateNum) -> bool;
     fn is_allocator(&self, cnum: CrateNum) -> bool;
     fn is_panic_runtime(&self, cnum: CrateNum) -> bool;
     fn is_compiler_builtins(&self, cnum: CrateNum) -> bool;
@@ -356,7 +355,6 @@ fn lang_items(&self, cnum: CrateNum) -> Vec<(DefIndex, usize)>
         { bug!("lang_items") }
     fn missing_lang_items(&self, cnum: CrateNum) -> Vec<lang_items::LangItem>
         { bug!("missing_lang_items") }
-    fn is_staged_api(&self, cnum: CrateNum) -> bool { bug!("is_staged_api") }
     fn dep_kind(&self, cnum: CrateNum) -> DepKind { bug!("is_explicitly_linked") }
     fn export_macros(&self, cnum: CrateNum) { bug!("export_macros") }
     fn is_allocator(&self, cnum: CrateNum) -> bool { bug!("is_allocator") }

diff --git a/src/librustc/middle/stability.rs b/src/librustc/middle/stability.rs
index 198f7420f5d2b7af19a79a06ccb481ff2e5c1522..d74877e355a7946c0d1bed885a397e2ce9b68908 100644 (file)
--- a/src/librustc/middle/stability.rs
+++ b/src/librustc/middle/stability.rs
@@ -13,12 +13,12 @@
 
 pub use self::StabilityLevel::*;
 
-use hir::map as hir_map;
 use lint;
 use hir::def::Def;
 use hir::def_id::{CrateNum, CRATE_DEF_INDEX, DefId, DefIndex, LOCAL_CRATE};
 use ty::{self, TyCtxt};
 use middle::privacy::AccessLevels;
+use session::Session;
 use syntax::symbol::Symbol;
 use syntax_pos::{Span, DUMMY_SP};
 use syntax::ast;
@@ -123,7 +123,7 @@ fn annotate<F>(&mut self, id: NodeId, attrs: &[Attribute],
                    item_sp: Span, kind: AnnotationKind, visit_children: F)
         where F: FnOnce(&mut Self)
     {
-        if self.index.staged_api[&LOCAL_CRATE] && self.tcx.sess.features.borrow().staged_api {
+        if self.index.staged_api[&LOCAL_CRATE] {
             debug!("annotate(id = {:?}, attrs = {:?})", id, attrs);
             if let Some(..) = attr::find_deprecation(self.tcx.sess.diagnostic(), attrs, item_sp) {
                 self.tcx.sess.span_err(item_sp, "`#[deprecated]` cannot be used in staged api, \
@@ -390,20 +390,36 @@ pub fn build(&mut self, tcx: TyCtxt<'a, 'tcx, 'tcx>) {
             parent_depr: None,
             in_trait_impl: false,
         };
+
+        // If the `-Z force-unstable-if-unmarked` flag is passed then we provide
+        // a parent stability annotation which indicates that this is private
+        // with the `rustc_private` feature. This is intended for use when
+        // compiling librustc crates themselves so we can leverage crates.io
+        // while maintaining the invariant that all sysroot crates are unstable
+        // by default and are unable to be used.
+        if tcx.sess.opts.debugging_opts.force_unstable_if_unmarked {
+            let reason = "this crate is being loaded from the sysroot, and \
+                          unstable location; did you mean to load this crate \
+                          from crates.io via `Cargo.toml` instead?";
+            let stability = tcx.intern_stability(Stability {
+                level: attr::StabilityLevel::Unstable {
+                    reason: Some(Symbol::intern(reason)),
+                    issue: 27812,
+                },
+                feature: Symbol::intern("rustc_private"),
+                rustc_depr: None,
+            });
+            annotator.parent_stab = Some(stability);
+        }
+
         annotator.annotate(ast::CRATE_NODE_ID, &krate.attrs, krate.span, AnnotationKind::Required,
                            |v| intravisit::walk_crate(v, krate));
     }
 
-    pub fn new(hir_map: &hir_map::Map) -> Index<'tcx> {
-        let krate = hir_map.krate();
-
-        let mut is_staged_api = false;
-        for attr in &krate.attrs {
-            if attr.path == "stable" || attr.path == "unstable" {
-                is_staged_api = true;
-                break
-            }
-        }
+    pub fn new(sess: &Session) -> Index<'tcx> {
+        let is_staged_api =
+            sess.opts.debugging_opts.force_unstable_if_unmarked ||
+            sess.features.borrow().staged_api;
 
         let mut staged_api = FxHashMap();
         staged_api.insert(LOCAL_CRATE, is_staged_api);
@@ -496,8 +512,10 @@ pub fn check_stability(self, def_id: DefId, id: NodeId, span: Span) {
             }
         }
 
-        let is_staged_api = *self.stability.borrow_mut().staged_api.entry(def_id.krate)
-            .or_insert_with(|| self.sess.cstore.is_staged_api(def_id.krate));
+        let is_staged_api = self.lookup_stability(DefId {
+            index: CRATE_DEF_INDEX,
+            ..def_id
+        }).is_some();
         if !is_staged_api {
             return;
         }
@@ -530,15 +548,32 @@ pub fn check_stability(self, def_id: DefId, id: NodeId, span: Span) {
 
         match stability {
             Some(&Stability { level: attr::Unstable {ref reason, issue}, ref feature, .. }) => {
-                if !self.stability.borrow().active_features.contains(feature) {
-                    let msg = match *reason {
-                        Some(ref r) => format!("use of unstable library feature '{}': {}",
-                                               feature.as_str(), &r),
-                        None => format!("use of unstable library feature '{}'", &feature)
-                    };
-                    emit_feature_err(&self.sess.parse_sess, &feature.as_str(), span,
-                                     GateIssue::Library(Some(issue)), &msg);
+                if self.stability.borrow().active_features.contains(feature) {
+                    return
                 }
+
+                // When we're compiling the compiler itself we may pull in
+                // crates from crates.io, but those crates may depend on other
+                // crates also pulled in from crates.io. We want to ideally be
+                // able to compile everything without requiring upstream
+                // modifications, so in the case that this looks like a
+                // rustc_private crate (e.g. a compiler crate) and we also have
+                // the `-Z force-unstable-if-unmarked` flag present (we're
+                // compiling a compiler crate), then let this missing feature
+                // annotation slide.
+                if *feature == "rustc_private" && issue == 27812 {
+                    if self.sess.opts.debugging_opts.force_unstable_if_unmarked {
+                        return
+                    }
+                }
+
+                let msg = match *reason {
+                    Some(ref r) => format!("use of unstable library feature '{}': {}",
+                                           feature.as_str(), &r),
+                    None => format!("use of unstable library feature '{}'", &feature)
+                };
+                emit_feature_err(&self.sess.parse_sess, &feature.as_str(), span,
+                                 GateIssue::Library(Some(issue)), &msg);
             }
             Some(_) => {
                 // Stable APIs are always ok to call and deprecated APIs are
@@ -658,7 +693,7 @@ pub fn check_unused_or_stable_features<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>) {
 
     let access_levels = &tcx.privacy_access_levels(LOCAL_CRATE);
 
-    if tcx.stability.borrow().staged_api[&LOCAL_CRATE] && tcx.sess.features.borrow().staged_api {
+    if tcx.stability.borrow().staged_api[&LOCAL_CRATE] {
         let krate = tcx.hir.krate();
         let mut missing = MissingStabilityAnnotations {
             tcx: tcx,

diff --git a/src/librustc/session/config.rs b/src/librustc/session/config.rs
index 75bc940625d82d58b8701606c7557af5443b820c..884a71f0d32d4b24c983cb9049ca4ba819a9f26d 100644 (file)
--- a/src/librustc/session/config.rs
+++ b/src/librustc/session/config.rs
@@ -1027,6 +1027,8 @@ fn parse_optimization_fuel(slot: &mut Option<(String, u64)>, v: Option<&str>) ->
         "add a source pattern to the file path remapping config"),
     remap_path_prefix_to: Vec<String> = (vec![], parse_string_push, [TRACKED],
         "add a mapping target to the file path remapping config"),
+    force_unstable_if_unmarked: bool = (false, parse_bool, [TRACKED],
+        "force all crates to be `rustc_private` unstable"),
 }
 
 pub fn default_lib_output() -> CrateType {

diff --git a/src/librustc_back/lib.rs b/src/librustc_back/lib.rs
index 6679cc73029c7e119edd15ff81fdb00f36d5c52d..69eabfe2ac0bf70c176f02e5fb23b59e1817142b 100644 (file)
--- a/src/librustc_back/lib.rs
+++ b/src/librustc_back/lib.rs
@@ -22,7 +22,6 @@
 //! build speedups.
 
 #![crate_name = "rustc_back"]
-#![unstable(feature = "rustc_private", issue = "27812")]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -34,10 +33,12 @@
 #![feature(const_fn)]
 #![feature(libc)]
 #![feature(rand)]
-#![feature(rustc_private)]
-#![feature(staged_api)]
 #![cfg_attr(test, feature(rand))]
 
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(rustc_private))]
+#![cfg_attr(stage0, feature(staged_api))]
+
 extern crate syntax;
 extern crate libc;
 extern crate serialize;

diff --git a/src/librustc_bitflags/lib.rs b/src/librustc_bitflags/lib.rs
index edd474b2e9edc441992e141c77a7254dc3404468..23558d82883423266f399ad98173c0f78f8cb21a 100644 (file)
--- a/src/librustc_bitflags/lib.rs
+++ b/src/librustc_bitflags/lib.rs
@@ -11,11 +11,11 @@
 
 #![crate_name = "rustc_bitflags"]
 #![feature(associated_consts)]
-#![feature(staged_api)]
 #![crate_type = "rlib"]
 #![no_std]
-#![unstable(feature = "rustc_private", issue = "27812")]
 #![deny(warnings)]
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(staged_api))]
 
 //! A typesafe bitmask flag generator.
 

diff --git a/src/librustc_borrowck/lib.rs b/src/librustc_borrowck/lib.rs
index a1d3357faf56684931ee9e2899c59e93bb665555..617326808970ba082a763ee66b15075dd0df4f94 100644 (file)
--- a/src/librustc_borrowck/lib.rs
+++ b/src/librustc_borrowck/lib.rs
@@ -9,7 +9,6 @@
 // except according to those terms.
 
 #![crate_name = "rustc_borrowck"]
-#![unstable(feature = "rustc_private", issue = "27812")]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -21,10 +20,13 @@
 
 #![feature(quote)]
 #![feature(rustc_diagnostic_macros)]
-#![feature(rustc_private)]
-#![feature(staged_api)]
 #![feature(associated_consts)]
 #![feature(nonzero)]
+
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(rustc_private))]
+#![cfg_attr(stage0, feature(staged_api))]
+
 #[macro_use] extern crate log;
 #[macro_use] extern crate syntax;
 extern crate syntax_pos;

diff --git a/src/librustc_const_eval/lib.rs b/src/librustc_const_eval/lib.rs
index fa3161a860498c17dd866295a008c25e86e66e63..8142829e81601ebba952ec5d57e7df90cc39a443 100644 (file)
--- a/src/librustc_const_eval/lib.rs
+++ b/src/librustc_const_eval/lib.rs
@@ -15,7 +15,6 @@
 //! This API is completely unstable and subject to change.
 
 #![crate_name = "rustc_const_eval"]
-#![unstable(feature = "rustc_private", issue = "27812")]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -23,8 +22,6 @@
       html_root_url = "https://doc.rust-lang.org/nightly/")]
 #![deny(warnings)]
 
-#![feature(rustc_private)]
-#![feature(staged_api)]
 #![feature(rustc_diagnostic_macros)]
 #![feature(slice_patterns)]
 #![feature(box_patterns)]
@@ -32,6 +29,10 @@
 #![feature(const_fn)]
 #![feature(i128_type)]
 
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(rustc_private))]
+#![cfg_attr(stage0, feature(staged_api))]
+
 extern crate arena;
 #[macro_use] extern crate syntax;
 #[macro_use] extern crate log;

diff --git a/src/librustc_const_math/lib.rs b/src/librustc_const_math/lib.rs
index b7833a5440321221eb934a00ef08fd675550cfcc..528170781ea7519cb1a3cf75d205bf8e48373e80 100644 (file)
--- a/src/librustc_const_math/lib.rs
+++ b/src/librustc_const_math/lib.rs
@@ -15,7 +15,6 @@
 //! This API is completely unstable and subject to change.
 
 #![crate_name = "rustc_const_math"]
-#![unstable(feature = "rustc_private", issue = "27812")]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -23,12 +22,14 @@
       html_root_url = "https://doc.rust-lang.org/nightly/")]
 #![deny(warnings)]
 
-#![feature(rustc_private)]
-#![feature(staged_api)]
 #![feature(const_fn)]
 #![feature(i128)]
 #![feature(i128_type)]
 
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(rustc_private))]
+#![cfg_attr(stage0, feature(staged_api))]
+
 extern crate syntax;
 
 extern crate serialize as rustc_serialize; // used by deriving

diff --git a/src/librustc_data_structures/lib.rs b/src/librustc_data_structures/lib.rs
index 00c46d992bfd5a05498e6b58b5c84f40b1952a0a..c254dfc48d22549da834a03de2cbb999e479bb53 100644 (file)
--- a/src/librustc_data_structures/lib.rs
+++ b/src/librustc_data_structures/lib.rs
@@ -17,7 +17,6 @@
 //! This API is completely unstable and subject to change.
 
 #![crate_name = "rustc_data_structures"]
-#![unstable(feature = "rustc_private", issue = "27812")]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -28,8 +27,6 @@
 #![feature(shared)]
 #![feature(collections_range)]
 #![feature(nonzero)]
-#![feature(rustc_private)]
-#![feature(staged_api)]
 #![feature(unboxed_closures)]
 #![feature(fn_traits)]
 #![feature(untagged_unions)]
@@ -42,6 +39,10 @@
 #![feature(manually_drop)]
 #![feature(struct_field_attributes)]
 
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(rustc_private))]
+#![cfg_attr(stage0, feature(staged_api))]
+
 #![cfg_attr(unix, feature(libc))]
 #![cfg_attr(test, feature(test))]
 

diff --git a/src/librustc_driver/driver.rs b/src/librustc_driver/driver.rs
index 5f14890665caba8aa963bada709f3a78601d039e..8fddbe110b0e6f4616fb584ede2e9afc71b383cb 100644 (file)
--- a/src/librustc_driver/driver.rs
+++ b/src/librustc_driver/driver.rs
@@ -882,7 +882,7 @@ macro_rules! try_with_f {
               "static item recursion checking",
               || static_recursion::check_crate(sess, &hir_map))?;
 
-    let index = stability::Index::new(&hir_map);
+    let index = stability::Index::new(&sess);
 
     let mut local_providers = ty::maps::Providers::default();
     borrowck::provide(&mut local_providers);

diff --git a/src/librustc_driver/lib.rs b/src/librustc_driver/lib.rs
index eef3b38a8b5e9bdb32c8b12788c32f68a1308ea9..024fc546a158efe9d175f4ba7357be522cf1a739 100644 (file)
--- a/src/librustc_driver/lib.rs
+++ b/src/librustc_driver/lib.rs
@@ -15,7 +15,6 @@
 //! This API is completely unstable and subject to change.
 
 #![crate_name = "rustc_driver"]
-#![unstable(feature = "rustc_private", issue = "27812")]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -28,9 +27,11 @@
 #![feature(libc)]
 #![feature(quote)]
 #![feature(rustc_diagnostic_macros)]
-#![feature(rustc_private)]
 #![feature(set_stdio)]
-#![feature(staged_api)]
+
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(rustc_private))]
+#![cfg_attr(stage0, feature(staged_api))]
 
 extern crate arena;
 extern crate getopts;

diff --git a/src/librustc_driver/test.rs b/src/librustc_driver/test.rs
index 8b95be00fa752cb50bf6c90b00641aff783579e4..3b4f2560fc555f214969d4df13db2c7189120867 100644 (file)
--- a/src/librustc_driver/test.rs
+++ b/src/librustc_driver/test.rs
@@ -138,7 +138,7 @@ fn test_env<F>(source_string: &str,
     // run just enough stuff to build a tcx:
     let lang_items = lang_items::collect_language_items(&sess, &hir_map);
     let named_region_map = resolve_lifetime::krate(&sess, &hir_map);
-    let index = stability::Index::new(&hir_map);
+    let index = stability::Index::new(&sess);
     TyCtxt::create_and_enter(&sess,
                              ty::maps::Providers::default(),
                              ty::maps::Providers::default(),

diff --git a/src/librustc_errors/lib.rs b/src/librustc_errors/lib.rs
index db8c9ac306bba718ff4ff9c6a64050289bdda97b..0f2e1669a47ad5502cb22d4ce7f2b422c432463a 100644 (file)
--- a/src/librustc_errors/lib.rs
+++ b/src/librustc_errors/lib.rs
@@ -9,7 +9,6 @@
 // except according to those terms.
 
 #![crate_name = "rustc_errors"]
-#![unstable(feature = "rustc_private", issue = "27812")]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -19,11 +18,13 @@
 
 #![feature(custom_attribute)]
 #![allow(unused_attributes)]
-#![feature(rustc_private)]
-#![feature(staged_api)]
 #![feature(range_contains)]
 #![feature(libc)]
 
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(rustc_private))]
+#![cfg_attr(stage0, feature(staged_api))]
+
 extern crate term;
 extern crate libc;
 extern crate serialize as rustc_serialize;

diff --git a/src/librustc_incremental/lib.rs b/src/librustc_incremental/lib.rs
index 95f0a96fdf965c4940c2ffeb56e74ab528a74596..70f967d50b0e1db97688ea48d88c18da60a668e3 100644 (file)
--- a/src/librustc_incremental/lib.rs
+++ b/src/librustc_incremental/lib.rs
@@ -11,7 +11,6 @@
 //! Support for serializing the dep-graph and reloading it.
 
 #![crate_name = "rustc_incremental"]
-#![unstable(feature = "rustc_private", issue = "27812")]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -19,12 +18,14 @@
       html_root_url = "https://doc.rust-lang.org/nightly/")]
 #![deny(warnings)]
 
-#![feature(rustc_private)]
-#![feature(staged_api)]
 #![feature(rand)]
 #![feature(conservative_impl_trait)]
 #![feature(sort_unstable)]
 
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(rustc_private))]
+#![cfg_attr(stage0, feature(staged_api))]
+
 extern crate graphviz;
 #[macro_use] extern crate rustc;
 extern crate rustc_data_structures;

diff --git a/src/librustc_lint/lib.rs b/src/librustc_lint/lib.rs
index 53ea3a8333f2d761c8027d1d9295ac87829d7d1d..2d0b5a6a51c6ba20baf5da358614c4930e847444 100644 (file)
--- a/src/librustc_lint/lib.rs
+++ b/src/librustc_lint/lib.rs
@@ -20,7 +20,6 @@
 //! This API is completely unstable and subject to change.
 
 #![crate_name = "rustc_lint"]
-#![unstable(feature = "rustc_private", issue = "27812")]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -34,9 +33,11 @@
 #![feature(i128_type)]
 #![feature(quote)]
 #![feature(rustc_diagnostic_macros)]
-#![feature(rustc_private)]
 #![feature(slice_patterns)]
-#![feature(staged_api)]
+
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(rustc_private))]
+#![cfg_attr(stage0, feature(staged_api))]
 
 #[macro_use]
 extern crate syntax;

diff --git a/src/librustc_llvm/lib.rs b/src/librustc_llvm/lib.rs
index c9b3a7ff3f3aac4d1880c8610c66ef2761092d47..790d493f1914c066fa105bb3f1ba774c3ad8524a 100644 (file)
--- a/src/librustc_llvm/lib.rs
+++ b/src/librustc_llvm/lib.rs
@@ -14,7 +14,6 @@
 #![allow(dead_code)]
 
 #![crate_name = "rustc_llvm"]
-#![unstable(feature = "rustc_private", issue = "27812")]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -27,10 +26,12 @@
 #![feature(concat_idents)]
 #![feature(libc)]
 #![feature(link_args)]
-#![feature(staged_api)]
-#![feature(rustc_private)]
 #![feature(static_nobundle)]
 
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(rustc_private))]
+#![cfg_attr(stage0, feature(staged_api))]
+
 extern crate libc;
 #[macro_use]
 #[no_link]

diff --git a/src/librustc_metadata/cstore.rs b/src/librustc_metadata/cstore.rs
index 8d53e7d49ee81b3d7027a37b7f77b0451a38af8d..c12b4209675dee9847304591dc66ea6c503834b3 100644 (file)
--- a/src/librustc_metadata/cstore.rs
+++ b/src/librustc_metadata/cstore.rs
@@ -269,15 +269,6 @@ pub fn disambiguator(&self) -> Symbol {
         self.root.disambiguator
     }
 
-    pub fn is_staged_api(&self, dep_graph: &DepGraph) -> bool {
-        for attr in self.get_item_attrs(CRATE_DEF_INDEX, dep_graph).iter() {
-            if attr.path == "stable" || attr.path == "unstable" {
-                return true;
-            }
-        }
-        false
-    }
-
     pub fn is_allocator(&self, dep_graph: &DepGraph) -> bool {
         let attrs = self.get_item_attrs(CRATE_DEF_INDEX, dep_graph);
         attr::contains_name(&attrs, "allocator")

diff --git a/src/librustc_metadata/cstore_impl.rs b/src/librustc_metadata/cstore_impl.rs
index f3fb427fed66fdd2e52204786bfbf03bc3f89312..dbf3e94832fc4fd724a010fe841d440243c406b0 100644 (file)
--- a/src/librustc_metadata/cstore_impl.rs
+++ b/src/librustc_metadata/cstore_impl.rs
@@ -229,11 +229,6 @@ fn missing_lang_items(&self, cnum: CrateNum)
         self.get_crate_data(cnum).get_missing_lang_items(&self.dep_graph)
     }
 
-    fn is_staged_api(&self, cnum: CrateNum) -> bool
-    {
-        self.get_crate_data(cnum).is_staged_api(&self.dep_graph)
-    }
-
     fn is_allocator(&self, cnum: CrateNum) -> bool
     {
         self.get_crate_data(cnum).is_allocator(&self.dep_graph)

diff --git a/src/librustc_metadata/lib.rs b/src/librustc_metadata/lib.rs
index 90eb2bc0f6a7dae31ed100e036ce467b3b6219b0..27555f49e57fc1afc0991cc53c81ae1cb1eca9a0 100644 (file)
--- a/src/librustc_metadata/lib.rs
+++ b/src/librustc_metadata/lib.rs
@@ -9,7 +9,6 @@
 // except according to those terms.
 
 #![crate_name = "rustc_metadata"]
-#![unstable(feature = "rustc_private", issue = "27812")]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -24,10 +23,12 @@
 #![feature(proc_macro_internals)]
 #![feature(quote)]
 #![feature(rustc_diagnostic_macros)]
-#![feature(rustc_private)]
 #![feature(specialization)]
-#![feature(staged_api)]
 #![feature(discriminant_value)]
+#![feature(rustc_private)]
+
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(staged_api))]
 
 #[macro_use]
 extern crate log;

diff --git a/src/librustc_mir/lib.rs b/src/librustc_mir/lib.rs
index 5fa56bac1379be8b120ab0e044d77bd4bee40877..014705bf32fa8b454391fc68b83ff2af95b44cf0 100644 (file)
--- a/src/librustc_mir/lib.rs
+++ b/src/librustc_mir/lib.rs
@@ -18,18 +18,19 @@
 #![crate_type = "rlib"]
 #![crate_type = "dylib"]
 #![deny(warnings)]
-#![unstable(feature = "rustc_private", issue = "27812")]
 
 #![feature(associated_consts)]
 #![feature(box_patterns)]
 #![feature(box_syntax)]
 #![feature(i128_type)]
 #![feature(rustc_diagnostic_macros)]
-#![feature(rustc_private)]
-#![feature(staged_api)]
 #![feature(placement_in_syntax)]
 #![feature(collection_placement)]
 
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(rustc_private))]
+#![cfg_attr(stage0, feature(staged_api))]
+
 #[macro_use] extern crate log;
 extern crate graphviz as dot;
 #[macro_use]

diff --git a/src/librustc_passes/lib.rs b/src/librustc_passes/lib.rs
index 22566c813d86ae4da36bd7ed0994e989a566277a..97f0022b8db8ddfc5cd184561af959bd4af1b827 100644 (file)
--- a/src/librustc_passes/lib.rs
+++ b/src/librustc_passes/lib.rs
@@ -15,7 +15,6 @@
 //! This API is completely unstable and subject to change.
 
 #![crate_name = "rustc_passes"]
-#![unstable(feature = "rustc_private", issue = "27812")]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -24,8 +23,10 @@
 #![deny(warnings)]
 
 #![feature(rustc_diagnostic_macros)]
-#![feature(staged_api)]
-#![feature(rustc_private)]
+
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(rustc_private))]
+#![cfg_attr(stage0, feature(staged_api))]
 
 #[macro_use]
 extern crate rustc;

diff --git a/src/librustc_platform_intrinsics/lib.rs b/src/librustc_platform_intrinsics/lib.rs
index dd2d60a1d22d6492dcb98729f1ae7254727d73be..21dd360c9bb7456770cfc86088c7952bb711aa2d 100644 (file)
--- a/src/librustc_platform_intrinsics/lib.rs
+++ b/src/librustc_platform_intrinsics/lib.rs
@@ -9,10 +9,10 @@
 // except according to those terms.
 
 #![crate_name = "rustc_platform_intrinsics"]
-#![unstable(feature = "rustc_private", issue = "27812")]
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
-#![feature(staged_api)]
+#![cfg_attr(stage0, feature(staged_api))]
 #![deny(warnings)]
 #![allow(bad_style)]
 

diff --git a/src/librustc_plugin/lib.rs b/src/librustc_plugin/lib.rs
index 8aa680ca12d10f49845a29f9e55785a695add257..16ab593e47a724b5372b5449b66ccfee1e8348c3 100644 (file)
--- a/src/librustc_plugin/lib.rs
+++ b/src/librustc_plugin/lib.rs
@@ -51,7 +51,6 @@
 //! for more examples.
 
 #![crate_name = "rustc_plugin"]
-#![unstable(feature = "rustc_private", issue = "27812")]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -59,9 +58,11 @@
        html_root_url = "https://doc.rust-lang.org/nightly/")]
 #![deny(warnings)]
 
-#![feature(staged_api)]
 #![feature(rustc_diagnostic_macros)]
-#![feature(rustc_private)]
+
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(rustc_private))]
+#![cfg_attr(stage0, feature(staged_api))]
 
 #[macro_use] extern crate syntax;
 

diff --git a/src/librustc_privacy/lib.rs b/src/librustc_privacy/lib.rs
index f63102433c1e6d5a6a51c2e0ea1ec65a1171694c..2ced61f5753a90c4aaf9c6312ecfd29add334272 100644 (file)
--- a/src/librustc_privacy/lib.rs
+++ b/src/librustc_privacy/lib.rs
@@ -9,7 +9,6 @@
 // except according to those terms.
 
 #![crate_name = "rustc_privacy"]
-#![unstable(feature = "rustc_private", issue = "27812")]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -18,8 +17,10 @@
 #![deny(warnings)]
 
 #![feature(rustc_diagnostic_macros)]
-#![feature(rustc_private)]
-#![feature(staged_api)]
+
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(rustc_private))]
+#![cfg_attr(stage0, feature(staged_api))]
 
 extern crate rustc;
 #[macro_use] extern crate syntax;

diff --git a/src/librustc_resolve/lib.rs b/src/librustc_resolve/lib.rs
index ac556270886ac677dcb0247c2791345f6348e59b..ee72aee042e91b0c232fa2b0af1d052561b872af 100644 (file)
--- a/src/librustc_resolve/lib.rs
+++ b/src/librustc_resolve/lib.rs
@@ -9,7 +9,6 @@
 // except according to those terms.
 
 #![crate_name = "rustc_resolve"]
-#![unstable(feature = "rustc_private", issue = "27812")]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -19,8 +18,10 @@
 
 #![feature(associated_consts)]
 #![feature(rustc_diagnostic_macros)]
-#![feature(rustc_private)]
-#![feature(staged_api)]
+
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(rustc_private))]
+#![cfg_attr(stage0, feature(staged_api))]
 
 #[macro_use]
 extern crate log;

diff --git a/src/librustc_save_analysis/lib.rs b/src/librustc_save_analysis/lib.rs
index fd6898d19d84fce59cea36b0ffbaff53e5f56aaa..cc98754f610429dbed69a5a434c16cc1b6bb9d38 100644 (file)
--- a/src/librustc_save_analysis/lib.rs
+++ b/src/librustc_save_analysis/lib.rs
@@ -9,7 +9,6 @@
 // except according to those terms.
 
 #![crate_name = "rustc_save_analysis"]
-#![unstable(feature = "rustc_private", issue = "27812")]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -19,8 +18,10 @@
 
 #![feature(custom_attribute)]
 #![allow(unused_attributes)]
-#![feature(rustc_private)]
-#![feature(staged_api)]
+
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(rustc_private))]
+#![cfg_attr(stage0, feature(staged_api))]
 
 #[macro_use] extern crate rustc;
 

diff --git a/src/librustc_trans/lib.rs b/src/librustc_trans/lib.rs
index 111c2547721663decc75b17ae753e0576c5c204f..ff094d04c846289bdecf1b10cbfd5e24ba92b0d0 100644 (file)
--- a/src/librustc_trans/lib.rs
+++ b/src/librustc_trans/lib.rs
@@ -15,7 +15,6 @@
 //! This API is completely unstable and subject to change.
 
 #![crate_name = "rustc_trans"]
-#![unstable(feature = "rustc_private", issue = "27812")]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -33,12 +32,14 @@
 #![feature(libc)]
 #![feature(quote)]
 #![feature(rustc_diagnostic_macros)]
-#![feature(rustc_private)]
 #![feature(slice_patterns)]
-#![feature(staged_api)]
 #![feature(unicode)]
 #![feature(conservative_impl_trait)]
 
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(rustc_private))]
+#![cfg_attr(stage0, feature(staged_api))]
+
 use rustc::dep_graph::WorkProduct;
 use syntax_pos::symbol::Symbol;
 

diff --git a/src/librustc_typeck/lib.rs b/src/librustc_typeck/lib.rs
index 84de4ff2b7b69203b32cb09ba36c42231bd68c86..99ee1cff7fd22ab9c2883eb49ac6346931c71c89 100644 (file)
--- a/src/librustc_typeck/lib.rs
+++ b/src/librustc_typeck/lib.rs
@@ -64,7 +64,6 @@
 */
 
 #![crate_name = "rustc_typeck"]
-#![unstable(feature = "rustc_private", issue = "27812")]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -81,8 +80,10 @@
 #![feature(never_type)]
 #![feature(quote)]
 #![feature(rustc_diagnostic_macros)]
-#![feature(rustc_private)]
-#![feature(staged_api)]
+
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(rustc_private))]
+#![cfg_attr(stage0, feature(staged_api))]
 
 #[macro_use] extern crate log;
 #[macro_use] extern crate syntax;

diff --git a/src/librustdoc/lib.rs b/src/librustdoc/lib.rs
index 1156fadf8c02c146dd01b4b5539c067dc67745fb..d89fa547a89cdcd544993ecf2ae28d3a1a70de42 100644 (file)
--- a/src/librustdoc/lib.rs
+++ b/src/librustdoc/lib.rs
@@ -9,7 +9,6 @@
 // except according to those terms.
 
 #![crate_name = "rustdoc"]
-#![unstable(feature = "rustc_private", issue = "27812")]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -21,14 +20,16 @@
 #![feature(box_patterns)]
 #![feature(box_syntax)]
 #![feature(libc)]
-#![feature(rustc_private)]
 #![feature(set_stdio)]
 #![feature(slice_patterns)]
-#![feature(staged_api)]
 #![feature(test)]
 #![feature(unicode)]
 #![feature(vec_remove_item)]
 
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(rustc_private))]
+#![cfg_attr(stage0, feature(staged_api))]
+
 extern crate arena;
 extern crate getopts;
 extern crate env_logger;

diff --git a/src/libserialize/lib.rs b/src/libserialize/lib.rs
index 2b31e2f4108063a7b7f88b1a370317ff3434e2a3..4eb2cad5c91b9178e0d817220aeb6dfce93fca7c 100644 (file)
--- a/src/libserialize/lib.rs
+++ b/src/libserialize/lib.rs
@@ -15,9 +15,9 @@
 */
 
 #![crate_name = "serialize"]
-#![unstable(feature = "rustc_private",
+#![cfg_attr(stage0, unstable(feature = "rustc_private",
             reason = "deprecated in favor of rustc-serialize on crates.io",
-            issue = "27812")]
+            issue = "27812"))]
 #![crate_type = "rlib"]
 #![crate_type = "dylib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -32,7 +32,7 @@
 #![feature(core_intrinsics)]
 #![feature(i128_type)]
 #![feature(specialization)]
-#![feature(staged_api)]
+#![cfg_attr(stage0, feature(staged_api))]
 #![cfg_attr(test, feature(test))]
 
 extern crate collections;

diff --git a/src/libsyntax/lib.rs b/src/libsyntax/lib.rs
index 89c67b88cbde6dccaa7c0006cefc9152aac9a747..32dafcdb582f0ca04a010c348aa11eedd29bdabf 100644 (file)
--- a/src/libsyntax/lib.rs
+++ b/src/libsyntax/lib.rs
@@ -15,7 +15,6 @@
 //! This API is completely unstable and subject to change.
 
 #![crate_name = "syntax"]
-#![unstable(feature = "rustc_private", issue = "27812")]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -24,12 +23,14 @@
        test(attr(deny(warnings))))]
 #![deny(warnings)]
 
-#![feature(rustc_private)]
-#![feature(staged_api)]
 #![feature(unicode)]
 #![feature(rustc_diagnostic_macros)]
 #![feature(i128_type)]
 
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(rustc_private))]
+#![cfg_attr(stage0, feature(staged_api))]
+
 extern crate serialize;
 #[macro_use] extern crate log;
 #[macro_use] extern crate bitflags;

diff --git a/src/libsyntax_ext/lib.rs b/src/libsyntax_ext/lib.rs
index e35e79df5852066cea8c85a228e3c89b9a40aa65..60f5d24ac97552533141eff4b4ccffe2d44d5b05 100644 (file)
--- a/src/libsyntax_ext/lib.rs
+++ b/src/libsyntax_ext/lib.rs
@@ -11,7 +11,6 @@
 //! Syntax extensions in the Rust compiler.
 
 #![crate_name = "syntax_ext"]
-#![unstable(feature = "rustc_private", issue = "27812")]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -20,8 +19,10 @@
 #![deny(warnings)]
 
 #![feature(proc_macro_internals)]
-#![feature(rustc_private)]
-#![feature(staged_api)]
+
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(rustc_private))]
+#![cfg_attr(stage0, feature(staged_api))]
 
 extern crate fmt_macros;
 extern crate log;

diff --git a/src/libsyntax_pos/lib.rs b/src/libsyntax_pos/lib.rs
index eb86a8e13797b1107a79716342f4c4cecf94b524..25f74aeecf4046eed1ce357fb435ed246a002203 100644 (file)
--- a/src/libsyntax_pos/lib.rs
+++ b/src/libsyntax_pos/lib.rs
@@ -15,7 +15,6 @@
 //! This API is completely unstable and subject to change.
 
 #![crate_name = "syntax_pos"]
-#![unstable(feature = "rustc_private", issue = "27812")]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -27,10 +26,12 @@
 #![feature(custom_attribute)]
 #![feature(optin_builtin_traits)]
 #![allow(unused_attributes)]
-#![feature(rustc_private)]
-#![feature(staged_api)]
 #![feature(specialization)]
 
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(rustc_private))]
+#![cfg_attr(stage0, feature(staged_api))]
+
 use std::cell::{Cell, RefCell};
 use std::ops::{Add, Sub};
 use std::rc::Rc;

diff --git a/src/libterm/lib.rs b/src/libterm/lib.rs
index 370757c06091013b53892579cc0d24fc686b8afd..eb0ee6ba154a187bb390b08fdf780231412a5d32 100644 (file)
--- a/src/libterm/lib.rs
+++ b/src/libterm/lib.rs
@@ -41,9 +41,6 @@
 //! [ti]: https://en.wikipedia.org/wiki/Terminfo
 
 #![crate_name = "term"]
-#![unstable(feature = "rustc_private",
-            reason = "use the crates.io `term` library instead",
-            issue = "27812")]
 #![crate_type = "rlib"]
 #![crate_type = "dylib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -54,13 +51,15 @@
 #![deny(missing_docs)]
 #![deny(warnings)]
 
-#![feature(box_syntax)]
 #![feature(staged_api)]
 #![cfg_attr(windows, feature(libc))]
 // Handle rustfmt skips
 #![feature(custom_attribute)]
 #![allow(unused_attributes)]
 
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(staged_api))]
+
 use std::io::prelude::*;
 
 pub use terminfo::TerminfoTerminal;