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389747c41d
improve the suggestion of `generic_bound_failure` - Fixes #115375 - suggest the bound in the correct scope: trait or impl header vs assoc item. See `tests/ui/suggestions/lifetimes/type-param-bound-scope.rs` - don't suggest a lifetime name that conflicts with the other late-bound regions of the function: ```rust type Inv<'a> = *mut &'a (); fn check_bound<'a, T: 'a>(_: T, _: Inv<'a>) {} fn test<'a, T>(_: &'a str, t: T, lt: Inv<'_>) { // suggests a new name `'a` check_bound(t, lt); //~ ERROR } ```
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