Add help note to unconstrained const parameter #76401
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Can you add https://play.rust-lang.org/?version=nightly&mode=debug&edition=2018&gist=51d59876e3827706e44f9891bf73dfe8 as a test? I am not sure how well the error message reads in that case |
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@bors r=lcnr It got reset when @JulianKnodt pushed the fixes to my nit (whoops) |
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| "expressions using a const parameter must map each value to a distinct output value", | ||
| ); | ||
| err.note( | ||
| "proving the result of expressions other than the parameter are unique is not supported", |
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I think the meaning of this comment may not be entirely clear to someone unfamiliar with the constraints of const generics, but I'm not sure of better wording yet. I'll have a think about it.
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Rollup of 10 pull requests Successful merges: - rust-lang#76162 (Make duration_since documentation more clear) - rust-lang#76355 (remove public visibility previously needed for rustfmt) - rust-lang#76374 (Improve ayu doc source line number contrast) - rust-lang#76379 (rustbuild: Remove `Mode::Codegen`) - rust-lang#76389 (Fix HashMap visualizers in Visual Studio (Code)) - rust-lang#76396 (Fix typo in tracking issue template) - rust-lang#76401 (Add help note to unconstrained const parameter) - rust-lang#76402 (Update linker-plugin-lto.md to contain up to rust 1.46) - rust-lang#76403 (Fix documentation for TyCtxt::all_impls) - rust-lang#76498 (Update cargo) Failed merges: - rust-lang#76458 (Add drain_filter method to HashMap and HashSet) r? `@ghost`
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Resolves #68366, since it is currently intended behaviour.
If demonstrating
T -> Uis injective, there should be an additional word that it is not yet supported.r? @lcnr