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Rollup merge of #131567 - CastilloDel:reject-unstable-with-accepted-f…
…eatures, r=jieyouxu Emit an error for unstable attributes that reference already stable features Closes #129814
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10 changes: 10 additions & 0 deletions
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tests/ui/feature-gates/unstable-attribute-rejects-already-stable-features.rs
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//! Ensure #[unstable] doesn't accept already stable features | ||
#![feature(staged_api)] | ||
#![stable(feature = "rust_test", since = "1.0.0")] | ||
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#[unstable(feature = "arbitrary_enum_discriminant", issue = "42")] //~ ERROR can't mark as unstable using an already stable feature | ||
#[rustc_const_unstable(feature = "arbitrary_enum_discriminant", issue = "42")] //~ ERROR can't mark as unstable using an already stable feature | ||
const fn my_fun() {} | ||
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fn main() {} |
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tests/ui/feature-gates/unstable-attribute-rejects-already-stable-features.stderr
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error: can't mark as unstable using an already stable feature | ||
--> $DIR/unstable-attribute-rejects-already-stable-features.rs:6:1 | ||
| | ||
LL | #[unstable(feature = "arbitrary_enum_discriminant", issue = "42")] | ||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this feature is already stable | ||
LL | #[rustc_const_unstable(feature = "arbitrary_enum_discriminant", issue = "42")] | ||
LL | const fn my_fun() {} | ||
| -------------------- the stability attribute annotates this item | ||
| | ||
help: consider removing the attribute | ||
--> $DIR/unstable-attribute-rejects-already-stable-features.rs:6:1 | ||
| | ||
LL | #[unstable(feature = "arbitrary_enum_discriminant", issue = "42")] | ||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | ||
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error: can't mark as unstable using an already stable feature | ||
--> $DIR/unstable-attribute-rejects-already-stable-features.rs:7:1 | ||
| | ||
LL | #[rustc_const_unstable(feature = "arbitrary_enum_discriminant", issue = "42")] | ||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this feature is already stable | ||
LL | const fn my_fun() {} | ||
| -------------------- the stability attribute annotates this item | ||
| | ||
help: consider removing the attribute | ||
--> $DIR/unstable-attribute-rejects-already-stable-features.rs:7:1 | ||
| | ||
LL | #[rustc_const_unstable(feature = "arbitrary_enum_discriminant", issue = "42")] | ||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | ||
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error: aborting due to 2 previous errors | ||
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