Use impl's generics when suggesting fix on bad impl Copy#99741
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bors merged 1 commit intorust-lang:masterfrom Jul 31, 2022
Merged
Use impl's generics when suggesting fix on bad impl Copy#99741bors merged 1 commit intorust-lang:masterfrom
impl's generics when suggesting fix on bad impl Copy#99741bors merged 1 commit intorust-lang:masterfrom
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| note: the `Copy` impl for `OnlyCopyIfDisplay<S>` requires that `S: std::fmt::Display` | ||
| --> $DIR/missing-bound-in-manual-copy-impl-2.rs:4:19 | ||
| | | ||
| LL | struct Wrapper<T>(T); | ||
| | ^ |
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Sorry for the late review. This span could be better but we can leave it as followup.
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Thanks. You're right, this is super misleading. I'll fix it.
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Rollup of 5 pull requests Successful merges: - rust-lang#99186 (Use LocalDefId for closures more) - rust-lang#99741 (Use `impl`'s generics when suggesting fix on bad `impl Copy`) - rust-lang#99844 (Introduce an ArchiveBuilderBuilder) - rust-lang#99921 (triagebot.yml: CC Enselic when rustdoc-json-types changes) - rust-lang#99974 (Suggest removing a semicolon and boxing the expressions for if-else) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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See the UI test for a more complicated example, but we weren't correctly suggesting to add bounds given a manual
implwhose generics didn't match the struct generics.Coincidentally this fix didn't cause any regressions for
derive(Copy)impls, I think because those use the same spans in the impl generics as the struct generics, so the machinery still applies the same change.