mirror of https://github.com/rust-lang/rust
35 lines
580 B
Rust
35 lines
580 B
Rust
// Regression test for rust-lang/rust#63154
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//
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// Before, we would ICE after failing to normalize the destination type
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// when checking call destinations and also when checking MIR
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// assignment statements.
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//@ check-pass
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trait HasAssocType {
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type Inner;
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}
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impl HasAssocType for () {
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type Inner = ();
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}
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trait Tr<I, T>: Fn(I) -> Option<T> {}
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impl<I, T, Q: Fn(I) -> Option<T>> Tr<I, T> for Q {}
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fn f<T: HasAssocType>() -> impl Tr<T, T::Inner> {
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|_| None
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}
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fn g<T, Y>(f: impl Tr<T, Y>) -> impl Tr<T, Y> {
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f
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}
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fn h() {
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g(f())(());
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}
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fn main() {
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h();
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}
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