Prefer non-[type error] candidates during selection
#106309
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Nice! @bors r+ rollup |
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…didates, r=oli-obk Prefer non-`[type error]` candidates during selection Fixes rust-lang#102130 Fixes rust-lang#106351 r? types note: Alternatively we could filter out error where-clauses during param-env construction? But we still need to filter out impls with errors during `match_impl`, I think.
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…didates, r=oli-obk Prefer non-`[type error]` candidates during selection Fixes rust-lang#102130 Fixes rust-lang#106351 r? types note: Alternatively we could filter out error where-clauses during param-env construction? But we still need to filter out impls with errors during `match_impl`, I think.
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Rebased @bors r=oli-obk |
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…didates, r=oli-obk Prefer non-`[type error]` candidates during selection Fixes rust-lang#102130 Fixes rust-lang#106351 r? types note: Alternatively we could filter out error where-clauses during param-env construction? But we still need to filter out impls with errors during `match_impl`, I think.
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…iaskrgr Rollup of 10 pull requests Successful merges: - rust-lang#106167 (Fix invalid syntax and incomplete suggestion in impl Trait parameter type suggestions for E0311) - rust-lang#106309 (Prefer non-`[type error]` candidates during selection) - rust-lang#106532 (Allow codegen to unsize `dyn*` to `dyn`) - rust-lang#106596 (Hide more of long types in E0271) - rust-lang#106638 (std tests: use __OsLocalKeyInner from realstd) - rust-lang#106676 (Test that we cannot use trait impl methods arguments as defining uses) - rust-lang#106702 (Conserve cause of `ImplDerivedObligation` in E0599) - rust-lang#106732 (rustc_llvm: replace llvm::makeArrayRef with ArrayRef constructors.) - rust-lang#106733 (Revert "warn newer available version of the x tool") - rust-lang#106748 (Clean up `OnUnimplementedFormatString::verify`) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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…etrochenkov Filter param-env predicates for errors before calling `to_opt_poly_trait_pred` cc rust-lang#106309 rust-lang#106757 (comment) r? `@ghost`
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…b-naber Don't say that a type is uncallable if its fn signature has errors in it This is fallout from rust-lang#106309, where we don't consider param-env candidates that reference errors because they unify with everything. This means, however, that we don't consider an APIT like `impl Fn(MissingType)` isn't considered to implement `Fn`, for example. We can double-check that with a weaker heuristic [`extract_callable_info`](https://doc.rust-lang.org/nightly/nightly-rustc/rustc_hir_typeck/fn_ctxt/struct.FnCtxt.html#method.extract_callable_info), and suppress the knock-down error using that. Fixes rust-lang#113566
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Fixes #102130
Fixes #106351
r? types
note: Alternatively we could filter out error where-clauses during param-env construction? But we still need to filter out impls with errors during
match_impl, I think.