Stabilize #[coverage] attribute

Author: clarfonthey

core/src/cmp.rs

@@ -348,7 +348,7 @@ pub trait Eq: PartialEq<Self> {
 #[rustc_builtin_macro]
 #[stable(feature = "builtin_macro_prelude", since = "1.38.0")]
 #[allow_internal_unstable(core_intrinsics, derive_eq, structural_match)]
-#[allow_internal_unstable(coverage_attribute)]
+#[cfg_attr(bootstrap, allow_internal_unstable(coverage_attribute))]
 pub macro Eq($item:item) {
     /* compiler built-in */
 }

core/src/lib.rs

@@ -107,12 +107,12 @@
 //
 // Library features:
 // tidy-alphabetical-start
+#![cfg_attr(bootstrap, feature(coverage_attribute))]
 #![feature(array_ptr_get)]
 #![feature(asm_experimental_arch)]
 #![feature(const_eval_select)]
 #![feature(const_typed_swap)]
 #![feature(core_intrinsics)]
-#![feature(coverage_attribute)]
 #![feature(do_not_recommend)]
 #![feature(internal_impls_macro)]
 #![feature(ip)]

core/src/macros/mod.rs

@@ -1673,7 +1673,8 @@ pub(crate) mod builtin {
     ///
     /// [the reference]: ../../../reference/attributes/testing.html#the-test-attribute
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[allow_internal_unstable(test, rustc_attrs, coverage_attribute)]
+    #[allow_internal_unstable(test, rustc_attrs)]
+    #[cfg_attr(bootstrap, allow_internal_unstable(coverage_attribute))]
     #[rustc_builtin_macro]
     pub macro test($item:item) {
         /* compiler built-in */
@@ -1686,7 +1687,8 @@ pub(crate) mod builtin {
         soft,
         reason = "`bench` is a part of custom test frameworks which are unstable"
     )]
-    #[allow_internal_unstable(test, rustc_attrs, coverage_attribute)]
+    #[allow_internal_unstable(test, rustc_attrs)]
+    #[cfg_attr(bootstrap, allow_internal_unstable(coverage_attribute))]
     #[rustc_builtin_macro]
     pub macro bench($item:item) {
         /* compiler built-in */