a6202e2a77
Expose the Freeze trait again (unstably) and forbid implementing it manually non-emoji version of https://github.com/rust-lang/rust/pull/121501 cc #60715 This trait is useful for generic constants (associated consts of generic traits). See the test (`tests/ui/associated-consts/freeze.rs`) added in this PR for a usage example. The builtin `Freeze` trait is the only way to do it, users cannot work around this issue. It's also a useful trait for building some very specific abstrations, as shown by the usage by the `zerocopy` crate: https://github.com/google/zerocopy/issues/941 cc ```@RalfJung``` T-lang signed off on reexposing this unstably: https://github.com/rust-lang/rust/pull/121501#issuecomment-1969827742 |
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|---|---|---|
| .. | ||
| alloc_example.rs | ||
| alloc_system.rs | ||
| arbitrary_self_types_pointers_and_wrappers.rs | ||
| dst-field-align.rs | ||
| example.rs | ||
| mini_core_hello_world.rs | ||
| mini_core.rs | ||
| mod_bench.rs | ||
| std_example.rs | ||
| subslice-patterns-const-eval.rs | ||
| track-caller-attribute.rs | ||