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Auto merge of #84310 - RalfJung:const-fn-feature-flags, r=oli-obk

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further split up const_fn feature flag

This continues the work on splitting up `const_fn` into separate feature flags:
* `const_fn_trait_bound` for `const fn` with trait bounds
* `const_fn_unsize` for unsizing coercions in `const fn` (looks like only `dyn` unsizing is still guarded here)

I don't know if there are even any things left that `const_fn` guards... at least libcore and liballoc do not need it any more.

`@oli-obk` are you currently able to do reviews?
This commit is contained in:
bors 2021-04-24 23:16:03 +00:00
commit b56b175c6c
37 changed files with 176 additions and 114 deletions
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6
compiler/rustc_feature/src/active.rs
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@ -645,6 +645,12 @@ declare_features! (
/// Allows `extern "wasm" fn`
(active, wasm_abi, "1.53.0", Some(83788), None),
/// Allows trait bounds in `const fn`.
(active, const_fn_trait_bound, "1.53.0", Some(57563), None),
/// Allows unsizing coercions in `const fn`.
(active, const_fn_unsize, "1.53.0", Some(64992), None),
// -------------------------------------------------------------------------
// feature-group-end: actual feature gates
// -------------------------------------------------------------------------