Rollup merge of #58595 - stjepang:make-duration-consts-associated, r=oli-obk

[rust.git] / src / libcore / panicking.rs

diff --git a/src/libcore/panicking.rs b/src/libcore/panicking.rs
index 58407de9566e95048a4edcdcf9d3333651fd0d66..d9cdb2a2b8a9f1fce0d960a5b962283330a44ab8 100644 (file)
--- a/src/libcore/panicking.rs
+++ b/src/libcore/panicking.rs
@@ -1,13 +1,3 @@
-// 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.
-
 //! Panic support for libcore
 //!
 //! The core library cannot define panicking, but it does *declare* panicking. This
@@ -39,9 +29,16 @@
 use fmt;
 use panic::{Location, PanicInfo};
 
-#[cold] #[inline(never)] // this is the slow path, always
+#[cold]
+// never inline unless panic_immediate_abort to avoid code
+// bloat at the call sites as much as possible
+#[cfg_attr(not(feature="panic_immediate_abort"),inline(never))]
 #[lang = "panic"]
 pub fn panic(expr_file_line_col: &(&'static str, &'static str, u32, u32)) -> ! {
+    if cfg!(feature = "panic_immediate_abort") {
+        unsafe { super::intrinsics::abort() }
+    }
+
     // Use Arguments::new_v1 instead of format_args!("{}", expr) to potentially
     // reduce size overhead. The format_args! macro uses str's Display trait to
     // write expr, which calls Formatter::pad, which must accommodate string
@@ -52,16 +49,27 @@ pub fn panic(expr_file_line_col: &(&'static str, &'static str, u32, u32)) -> ! {
     panic_fmt(fmt::Arguments::new_v1(&[expr], &[]), &(file, line, col))
 }
 
-#[cold] #[inline(never)]
+#[cold]
+#[cfg_attr(not(feature="panic_immediate_abort"),inline(never))]
 #[lang = "panic_bounds_check"]
 fn panic_bounds_check(file_line_col: &(&'static str, u32, u32),
                      index: usize, len: usize) -> ! {
+    if cfg!(feature = "panic_immediate_abort") {
+        unsafe { super::intrinsics::abort() }
+    }
+
     panic_fmt(format_args!("index out of bounds: the len is {} but the index is {}",
                            len, index), file_line_col)
 }
 
-#[cold] #[inline(never)]
+#[cold]
+#[cfg_attr(not(feature="panic_immediate_abort"),inline(never))]
+#[cfg_attr(    feature="panic_immediate_abort" ,inline)]
 pub fn panic_fmt(fmt: fmt::Arguments, file_line_col: &(&'static str, u32, u32)) -> ! {
+    if cfg!(feature = "panic_immediate_abort") {
+        unsafe { super::intrinsics::abort() }
+    }
+
     // NOTE This function never crosses the FFI boundary; it's a Rust-to-Rust call
     #[allow(improper_ctypes)] // PanicInfo contains a trait object which is not FFI safe
     extern "Rust" {