Add no_coverage to the 'removed features' list

Author: bossmc

compiler/rustc_feature/src/active.rs

@@ -400,7 +400,7 @@ declare_features! (
     (active, const_try, "1.56.0", Some(74935), None),
     /// Allows function attribute `#[coverage(on/off)]`, to control coverage
     /// instrumentation of that function.
-    (active, coverage, "1.53.0", Some(84605), None),
+    (active, coverage, "CURRENT_RUSTC_VERSION", Some(84605), None),
     /// Allows non-builtin attributes in inner attribute position.
     (active, custom_inner_attributes, "1.30.0", Some(54726), None),
     /// Allows custom test frameworks with `#![test_runner]` and `#[test_case]`.

compiler/rustc_feature/src/removed.rs

@@ -136,6 +136,9 @@ declare_features! (
      Some("subsumed by `#![feature(allocator_internals)]`")),
     /// Allows use of unary negate on unsigned integers, e.g., -e for e: u8
     (removed, negate_unsigned, "1.0.0", Some(29645), None, None),
+    /// Allows `#[no_coverage]` on functions.
+    /// The feature was renamed to `coverage` and the attribute to `#[coverage(on|off)]`
+    (removed, no_coverage, "CURRENT_RUSTC_VERSION", Some(84605), None, Some("renamed to `coverage`")),
     /// Allows `#[no_debug]`.
     (removed, no_debug, "1.43.0", Some(29721), None, Some("removed due to lack of demand")),
     /// Allows using `#[on_unimplemented(..)]` on traits.

compiler/rustc_span/src/symbol.rs

@@ -1038,6 +1038,7 @@ symbols! {
         no,
         no_builtins,
         no_core,
+        no_coverage,
         no_crate_inject,
         no_debug,
         no_default_passes,

tests/ui/feature-gates/feature-gate-coverage.rs

@@ -1,4 +1,5 @@
 #![crate_type = "lib"]
+#![feature(no_coverage)] //~ ERROR feature has been removed [E0557]
 
 #[derive(PartialEq, Eq)] // ensure deriving `Eq` does not enable `feature(coverage)`
 struct Foo {
@@ -7,7 +8,7 @@ struct Foo {
 }
 
 #[coverage(off)] //~ ERROR the `#[coverage]` attribute is an experimental feature
-fn requires_feature_no_coverage() -> bool {
+fn requires_feature_coverage() -> bool {
     let bar = Foo { a: 0, b: 0 };
     bar == Foo { a: 0, b: 0 }
 }

tests/ui/feature-gates/feature-gate-coverage.stderr

@@ -1,12 +1,21 @@
+error[E0557]: feature has been removed
+  --> $DIR/feature-gate-coverage.rs:2:12
+   |
+LL | #![feature(no_coverage)]
+   |            ^^^^^^^^^^^ feature has been removed
+   |
+   = note: renamed to `coverage`
+
 error[E0658]: the `#[coverage]` attribute is an experimental feature
-  --> $DIR/feature-gate-coverage.rs:9:1
+  --> $DIR/feature-gate-coverage.rs:10:1
    |
 LL | #[coverage(off)]
    | ^^^^^^^^^^^^^^^^
    |
    = note: see issue #84605 <https://github.com/rust-lang/rust/issues/84605> for more information
    = help: add `#![feature(coverage)]` to the crate attributes to enable
 
-error: aborting due to previous error
+error: aborting due to 2 previous errors
 
-For more information about this error, try `rustc --explain E0658`.
+Some errors have detailed explanations: E0557, E0658.
+For more information about an error, try `rustc --explain E0557`.