Stabilize #[coverage] attribute

compiler/rustc_feature/src/accepted.rs

@@ -157,6 +157,9 @@ declare_features! (
     (accepted, const_refs_to_static, "1.83.0", Some(119618)),
     /// Allows implementing `Copy` for closures where possible (RFC 2132).
     (accepted, copy_closures, "1.26.0", Some(44490)),
+    /// Allows function attribute `#[coverage(on/off)]`, to control coverage
+    /// instrumentation of that function.
+    (accepted, coverage_attribute, "CURRENT_RUSTC_VERSION", Some(84605)),
     /// Allows `crate` in paths.
     (accepted, crate_in_paths, "1.30.0", Some(45477)),
     /// Allows users to provide classes for fenced code block using `class:classname`.

compiler/rustc_feature/src/builtin_attrs.rs

@@ -480,10 +480,9 @@ pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[
         template!(List: "address, kcfi, memory, thread"), DuplicatesOk,
         EncodeCrossCrate::No, experimental!(no_sanitize)
     ),
-    gated!(
+    ungated!(
         coverage, Normal, template!(OneOf: &[sym::off, sym::on]),
         ErrorPreceding, EncodeCrossCrate::No,
-        coverage_attribute, experimental!(coverage)
     ),
 
     ungated!(

compiler/rustc_feature/src/unstable.rs

@@ -448,9 +448,6 @@ declare_features! (
     (unstable, coroutine_clone, "1.65.0", Some(95360)),
     /// Allows defining coroutines.
     (unstable, coroutines, "1.21.0", Some(43122)),
-    /// Allows function attribute `#[coverage(on/off)]`, to control coverage
-    /// instrumentation of that function.
-    (unstable, coverage_attribute, "1.74.0", Some(84605)),
     /// Allows non-builtin attributes in inner attribute position.
     (unstable, custom_inner_attributes, "1.30.0", Some(54726)),
     /// Allows custom test frameworks with `#![test_runner]` and `#[test_case]`.