Rollup merge of #36811 - brson:bootstrap, r=alexcrichton

Update bootstrap compiler

src/bootstrap/bin/rustc.rs

@@ -104,8 +104,7 @@ fn main() {
         let is_panic_abort = args.windows(2).any(|a| {
             &*a[0] == "--crate-name" && &*a[1] == "panic_abort"
         });
-        // FIXME(stage0): remove this `stage != "0"` condition
-        if is_panic_abort && stage != "0" {
+        if is_panic_abort {
             cmd.arg("-C").arg("panic=abort");
         }
 

src/bootstrap/compile.rs

@@ -25,7 +25,7 @@ use std::process::Command;
 use build_helper::output;
 use filetime::FileTime;
 
-use util::{exe, staticlib, libdir, mtime, is_dylib, copy};
+use util::{exe, libdir, mtime, is_dylib, copy};
 use {Build, Compiler, Mode};
 
 /// Build the standard library.
@@ -40,20 +40,6 @@ pub fn std<'a>(build: &'a Build, target: &str, compiler: &Compiler<'a>) {
     let libdir = build.sysroot_libdir(compiler, target);
     let _ = fs::remove_dir_all(&libdir);
     t!(fs::create_dir_all(&libdir));
-    // FIXME(stage0) remove this `if` after the next snapshot
-    // The stage0 compiler still passes the `-lcompiler-rt` flag to the linker but now `bootstrap`
-    // never builds a `libcopmiler-rt.a`! We'll fill the hole by simply copying stage0's
-    // `libcompiler-rt.a` to where the stage1's one is expected (though we could as well just use
-    // an empty `.a` archive). Note that the symbols of that stage0 `libcompiler-rt.a` won't make
-    // it to the final binary because now `libcore.rlib` also contains the symbols that
-    // `libcompiler-rt.a` provides. Since that rlib appears first in the linker arguments, its
-    // symbols are used instead of `libcompiler-rt.a`'s.
-    if compiler.stage == 0 {
-        let rtlib = &staticlib("compiler-rt", target);
-        let src = build.rustc.parent().unwrap().parent().unwrap().join("lib").join("rustlib")
-            .join(target).join("lib").join(rtlib);
-        copy(&src, &libdir.join(rtlib));
-    }
 
     // Some platforms have startup objects that may be required to produce the
     // libstd dynamic library, for example.

src/liballoc/arc.rs

@@ -127,7 +127,6 @@ const MAX_REFCOUNT: usize = (isize::MAX) as usize;
 /// }
 /// ```
 
-#[cfg_attr(stage0, unsafe_no_drop_flag)]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct Arc<T: ?Sized> {
     ptr: Shared<ArcInner<T>>,
@@ -153,7 +152,6 @@ impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<Arc<U>> for Arc<T> {}
 /// nodes behind strong `Arc<T>` pointers, and then storing the parent pointers
 /// as `Weak<T>` pointers.
 
-#[cfg_attr(stage0, unsafe_no_drop_flag)]
 #[stable(feature = "arc_weak", since = "1.4.0")]
 pub struct Weak<T: ?Sized> {
     ptr: Shared<ArcInner<T>>,

src/liballoc/lib.rs

@@ -88,7 +88,6 @@
 #![feature(staged_api)]
 #![feature(unboxed_closures)]
 #![feature(unique)]
-#![cfg_attr(stage0, feature(unsafe_no_drop_flag))]
 #![feature(unsize)]
 
 #![cfg_attr(not(test), feature(fused, fn_traits, placement_new_protocol))]

src/liballoc/raw_vec.rs

@@ -44,7 +44,6 @@ use core::cmp;
 /// `shrink_to_fit`, and `from_box` will actually set RawVec's private capacity
 /// field. This allows zero-sized types to not be special-cased by consumers of
 /// this type.
-#[cfg_attr(stage0, unsafe_no_drop_flag)]
 pub struct RawVec<T> {
     ptr: Unique<T>,
     cap: usize,

src/liballoc/rc.rs

@@ -252,7 +252,6 @@ struct RcBox<T: ?Sized> {
 /// that you have to call them as e.g. `Rc::get_mut(&value)` instead of
 /// `value.get_mut()`.  This avoids conflicts with methods of the inner
 /// type `T`.
-#[cfg_attr(stage0, unsafe_no_drop_flag)]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct Rc<T: ?Sized> {
     ptr: Shared<RcBox<T>>,
@@ -873,7 +872,6 @@ impl<T> From<T> for Rc<T> {
 ///
 /// [rc]: struct.Rc.html
 /// [downgrade]: struct.Rc.html#method.downgrade
-#[cfg_attr(stage0, unsafe_no_drop_flag)]
 #[stable(feature = "rc_weak", since = "1.4.0")]
 pub struct Weak<T: ?Sized> {
     ptr: Shared<RcBox<T>>,

src/libcollections/lib.rs

@@ -52,7 +52,6 @@
 #![feature(step_by)]
 #![feature(unicode)]
 #![feature(unique)]
-#![cfg_attr(stage0, feature(unsafe_no_drop_flag))]
 #![cfg_attr(test, feature(rand, test))]
 
 #![no_std]

src/libcollections/vec.rs

@@ -268,7 +268,6 @@ use super::range::RangeArgument;
 /// Vec does not currently guarantee the order in which elements are dropped
 /// (the order has changed in the past, and may change again).
 ///
-#[cfg_attr(stage0, unsafe_no_drop_flag)]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct Vec<T> {
     buf: RawVec<T>,

src/libcompiler_builtins/lib.rs

@@ -8,9 +8,9 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![cfg_attr(not(stage0), feature(compiler_builtins))]
+#![feature(compiler_builtins)]
 #![no_std]
-#![cfg_attr(not(stage0), compiler_builtins)]
+#![compiler_builtins]
 #![unstable(feature = "compiler_builtins_lib",
             reason = "internal implementation detail of rustc right now",
             issue = "0")]

src/libcore/clone.rs

@@ -129,13 +129,6 @@ pub struct AssertParamIsClone<T: Clone + ?Sized> { _field: ::marker::PhantomData
            reason = "deriving hack, should not be public",
            issue = "0")]
 pub struct AssertParamIsCopy<T: Copy + ?Sized> { _field: ::marker::PhantomData<T> }
-#[cfg(stage0)]
-#[doc(hidden)]
-#[inline(always)]
-#[unstable(feature = "derive_clone_copy",
-           reason = "deriving hack, should not be public",
-           issue = "0")]
-pub fn assert_receiver_is_clone<T: Clone + ?Sized>(_: &T) {}
 
 #[stable(feature = "rust1", since = "1.0.0")]
 impl<'a, T: ?Sized> Clone for &'a T {

src/libcore/intrinsics.rs

@@ -194,14 +194,12 @@ extern "rust-intrinsic" {
     /// own, or if it does not enable any significant optimizations.
     pub fn assume(b: bool);
 
-    #[cfg(not(stage0))]
     /// Hints to the compiler that branch condition is likely to be true.
     /// Returns the value passed to it.
     ///
     /// Any use other than with `if` statements will probably not have an effect.
     pub fn likely(b: bool) -> bool;
 
-    #[cfg(not(stage0))]
     /// Hints to the compiler that branch condition is likely to be false.
     /// Returns the value passed to it.
     ///

src/libstd/collections/hash/table.rs

@@ -59,7 +59,6 @@ const EMPTY_BUCKET: u64 = 0;
 /// around just the "table" part of the hashtable. It enforces some
 /// invariants at the type level and employs some performance trickery,
 /// but in general is just a tricked out `Vec<Option<u64, K, V>>`.
-#[cfg_attr(stage0, unsafe_no_drop_flag)]
 pub struct RawTable<K, V> {
     capacity: usize,
     size: usize,

src/libstd/lib.rs

@@ -278,7 +278,6 @@
 #![feature(unboxed_closures)]
 #![feature(unicode)]
 #![feature(unique)]
-#![cfg_attr(stage0, feature(unsafe_no_drop_flag))]
 #![feature(unwind_attributes)]
 #![feature(vec_push_all)]
 #![feature(zero_one)]

src/stage0.txt

@@ -12,6 +12,6 @@
 # tarball for a stable release you'll likely see `1.x.0-$date` where `1.x.0` was
 # released on `$date`
 
-rustc: beta-2016-08-17
-rustc_key: 195e6261
-cargo: nightly-2016-08-21
+rustc: beta-2016-09-28
+rustc_key: 62b3e239
+cargo: nightly-2016-09-26