Properly check associated consts for infer placeholders #112506
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| { | ||
| // Account for `const C: _;`. | ||
| let mut visitor = HirPlaceholderCollector::default(); | ||
| visitor.visit_trait_item(trait_item); |
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Can you explain why we only want to call visit_trait_item if !tcx.sess.diagnostic().has_stashed_diagnostic(ty.span, StashKey::ItemNoType) holds, please?
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Because if there is a stashed diagnostic then we will already be emitting an error, and visiting this item will provide a redundant/useless error.
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…iaskrgr Rollup of 6 pull requests Successful merges: - rust-lang#98202 (Implement `TryFrom<&OsStr>` for `&str`) - rust-lang#107619 (Specify behavior of HashSet::insert) - rust-lang#109814 (Stabilize String::leak) - rust-lang#111974 (Update runtime guarantee for `select_nth_unstable`) - rust-lang#112109 (Don't print unsupported split-debuginfo modes with `-Zunstable-options`) - rust-lang#112506 (Properly check associated consts for infer placeholders) r? `@ghost` `@rustbot` modify labels: rollup
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We only reported an error if it was in a "suggestable" position (according to
is_suggestable_infer_ty) -- this isn't correct for infer tys that can show up in other places in the constant's type, like behind a dyn trait.fixes #112491