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c30e15aded
Trait predicates for types which have errors may still evaluate to OK leading to downstream ICEs. Now we return a selection error for such types in candidate assembly and thereby prevent such issues
25 lines
512 B
Rust
25 lines
512 B
Rust
// A regression test for #68830. This checks we don't emit
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// a verbose `conflicting implementations` error.
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#![feature(specialization)]
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#![allow(incomplete_features)]
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struct BadStruct {
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err: MissingType //~ ERROR: cannot find type `MissingType` in this scope
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}
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trait MyTrait<T> {
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fn foo();
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}
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impl<T, D> MyTrait<T> for D {
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default fn foo() {}
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}
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impl<T> MyTrait<T> for BadStruct {
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//~^ ERROR: conflicting implementations of trait `MyTrait<_>` for type `BadStruct`
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fn foo() {}
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}
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fn main() {}
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