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Rollup merge of #126552 - fee1-dead-contrib:rmfx, r=compiler-errors

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Remove use of const traits (and `feature(effects)`) from stdlib

The current uses are already unsound because they are using non-const impls in const contexts. We can reintroduce them by reverting the commit in this PR, after #120639 lands.

Also, make `effects` an incomplete feature.

cc `@rust-lang/project-const-traits`
r? `@compiler-errors`
This commit is contained in:
Matthias Krüger 2024-06-22 19:33:56 +02:00 • committed by GitHub
commit dc9a08f535
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160 changed files with 1859 additions and 311 deletions
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compiler/rustc_feature/src/unstable.rs
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@ -449,7 +449,7 @@ declare_features! (
/// Allows `dyn* Trait` objects.
(incomplete, dyn_star, "1.65.0", Some(102425)),
/// Uses generic effect parameters for ~const bounds
(unstable, effects, "1.72.0", Some(102090)),
(incomplete, effects, "1.72.0", Some(102090)),
/// Allows exhaustive pattern matching on types that contain uninhabited types.
(unstable, exhaustive_patterns, "1.13.0", Some(51085)),
/// Allows explicit tail calls via `become` expression.