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![]() Don't pick `T: FnPtr` nested goals as the leaf goal in diagnostics for new solver r? `@lcnr` See `tests/ui/traits/next-solver/diagnostics/dont-pick-fnptr-bound-as-leaf.rs` for a minimized example of what code this affects the diagnostics off. The output of running nightly `-Znext-solver` on that test is the following: ``` error[E0277]: the trait bound `Foo: Trait` is not satisfied --> src/lib.rs:14:20 | 14 | requires_trait(Foo); | -------------- ^^^ the trait `FnPtr` is not implemented for `Foo` | | | required by a bound introduced by this call | note: required for `Foo` to implement `Trait` --> src/lib.rs:7:16 | 7 | impl<T: FnPtr> Trait for T {} | ----- ^^^^^ ^ | | | unsatisfied trait bound introduced here note: required by a bound in `requires_trait` --> src/lib.rs:11:22 | 11 | fn requires_trait<T: Trait>(_: T) {} | ^^^^^ required by this bound in `requires_trait` ``` Part of rust-lang/trait-system-refactor-initiative#148 |
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