Remove some '#[feature]' attributes for stabilized features

Author: SimonSapin

src/doc/unstable-book/src/library-features/alloc-system.md

@@ -61,7 +61,6 @@ crate.io’s `jemallocator` crate provides equivalent functionality.)
 jemallocator = "0.1"
 ```
 ```rust,ignore
-#![feature(global_allocator)]
 #![crate_type = "dylib"]
 
 extern crate jemallocator;

src/liballoc_system/lib.rs

@@ -14,7 +14,6 @@
             reason = "this library is unlikely to be stabilized in its current \
                       form or name",
             issue = "32838")]
-#![feature(global_allocator)]
 #![feature(allocator_api)]
 #![feature(core_intrinsics)]
 #![feature(staged_api)]

src/librustc_asan/lib.rs

@@ -10,8 +10,7 @@
 
 #![sanitizer_runtime]
 #![feature(alloc_system)]
-#![feature(allocator_api)]
-#![feature(global_allocator)]
+#![cfg_attr(stage0, feature(global_allocator))]
 #![feature(sanitizer_runtime)]
 #![feature(staged_api)]
 #![no_std]

src/librustc_lsan/lib.rs

@@ -9,10 +9,9 @@
 // except according to those terms.
 
 #![sanitizer_runtime]
-#![feature(sanitizer_runtime)]
 #![feature(alloc_system)]
-#![feature(allocator_api)]
-#![feature(global_allocator)]
+#![cfg_attr(stage0, feature(global_allocator))]
+#![feature(sanitizer_runtime)]
 #![feature(staged_api)]
 #![no_std]
 #![unstable(feature = "sanitizer_runtime_lib",

src/librustc_msan/lib.rs

@@ -9,10 +9,9 @@
 // except according to those terms.
 
 #![sanitizer_runtime]
-#![feature(sanitizer_runtime)]
 #![feature(alloc_system)]
-#![feature(allocator_api)]
-#![feature(global_allocator)]
+#![cfg_attr(stage0, feature(global_allocator))]
+#![feature(sanitizer_runtime)]
 #![feature(staged_api)]
 #![no_std]
 #![unstable(feature = "sanitizer_runtime_lib",

src/librustc_tsan/lib.rs

@@ -10,8 +10,7 @@
 
 #![sanitizer_runtime]
 #![feature(alloc_system)]
-#![feature(allocator_api)]
-#![feature(global_allocator)]
+#![cfg_attr(stage0, feature(global_allocator))]
 #![feature(sanitizer_runtime)]
 #![feature(staged_api)]
 #![no_std]

src/libstd/lib.rs

@@ -262,7 +262,6 @@
 #![feature(fn_traits)]
 #![feature(fnbox)]
 #![feature(hashmap_internals)]
-#![feature(heap_api)]
 #![feature(int_error_internals)]
 #![feature(integer_atomics)]
 #![feature(into_cow)]

src/test/compile-fail/allocator/auxiliary/system-allocator.rs

@@ -10,7 +10,6 @@
 
 // no-prefer-dynamic
 
-#![feature(global_allocator, allocator_api)]
 #![crate_type = "rlib"]
 
 use std::alloc::System;

src/test/compile-fail/allocator/auxiliary/system-allocator2.rs

@@ -10,7 +10,6 @@
 
 // no-prefer-dynamic
 
-#![feature(global_allocator, allocator_api)]
 #![crate_type = "rlib"]
 
 use std::alloc::System;

src/test/compile-fail/allocator/function-allocator.rs

@@ -8,7 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![feature(global_allocator)]
 
 #[global_allocator]
 fn foo() {} //~ ERROR: allocators must be statics

src/test/compile-fail/allocator/not-an-allocator.rs

@@ -8,8 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![feature(global_allocator, heap_api)]
-
 #[global_allocator]
 static A: usize = 0;
 //~^ the trait bound `usize:

src/test/compile-fail/allocator/two-allocators.rs

@@ -8,8 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![feature(global_allocator, allocator_api)]
-
 use std::alloc::System;
 
 #[global_allocator]

src/test/compile-fail/allocator/two-allocators2.rs

@@ -12,8 +12,6 @@
 // no-prefer-dynamic
 // error-pattern: the #[global_allocator] in
 
-#![feature(global_allocator, allocator_api)]
-
 extern crate system_allocator;
 
 use std::alloc::System;

src/test/compile-fail/allocator/two-allocators3.rs

@@ -13,7 +13,6 @@
 // no-prefer-dynamic
 // error-pattern: the #[global_allocator] in
 
-#![feature(global_allocator)]
 
 extern crate system_allocator;
 extern crate system_allocator2;

src/test/run-make-fulldeps/std-core-cycle/foo.rs

@@ -8,7 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![feature(global_allocator)]
 #![crate_type = "cdylib"]
 
 extern crate bar;

src/test/run-pass-valgrind/issue-44800.rs

@@ -8,11 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![feature(global_allocator, alloc_system, allocator_api)]
-extern crate alloc_system;
-
+use std::alloc::System;
 use std::collections::VecDeque;
-use alloc_system::System;
 
 #[global_allocator]
 static ALLOCATOR: System = System;

src/test/run-pass/allocator/auxiliary/custom-as-global.rs

@@ -10,7 +10,6 @@
 
 // no-prefer-dynamic
 
-#![feature(global_allocator)]
 #![crate_type = "rlib"]
 
 extern crate custom;

src/test/run-pass/allocator/custom.rs

@@ -11,7 +11,7 @@
 // aux-build:helper.rs
 // no-prefer-dynamic
 
-#![feature(global_allocator, heap_api, allocator_api)]
+#![feature(allocator_api)]
 
 extern crate helper;
 

src/test/run-pass/allocator/xcrate-use.rs

@@ -12,7 +12,7 @@
 // aux-build:helper.rs
 // no-prefer-dynamic
 
-#![feature(global_allocator, heap_api, allocator_api)]
+#![feature(allocator_api)]
 
 extern crate custom;
 extern crate helper;

src/test/run-pass/thin-lto-global-allocator.rs

@@ -11,8 +11,6 @@
 // compile-flags: -Z thinlto -C codegen-units=2
 // min-llvm-version 4.0
 
-#![feature(allocator_api, global_allocator)]
-
 #[global_allocator]
 static A: std::alloc::System = std::alloc::System;