mirror of https://github.com/rust-lang/rust.git
36 lines
861 B
Rust
36 lines
861 B
Rust
//@ check-pass
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//@ revisions: current next
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//@[next] compile-flags: -Znext-solver
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// Regression test for nalgebra hang from
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// https://github.com/rust-lang/rust/pull/130654#issuecomment-2365465354
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trait HasAlias {}
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struct Dummy;
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trait DummyTrait {
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type DummyType<T: HasAlias>;
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}
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impl DummyTrait for Dummy {
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type DummyType<T: HasAlias> = T;
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}
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type AliasOf<T> = <Dummy as DummyTrait>::DummyType<T>;
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struct Matrix<T, S>(T, S);
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type OMatrix<T> = Matrix<T, AliasOf<T>>;
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impl<T: HasAlias> HasAlias for OMatrix<T> {}
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trait SimdValue {
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type Element;
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}
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impl<T: HasAlias + SimdValue<Element: HasAlias>> SimdValue for OMatrix<T> {
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type Element = OMatrix<T::Element>;
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}
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trait Unimplemented {}
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pub trait MyFrom<T> {}
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impl<T: Unimplemented> MyFrom<T> for T {}
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impl<T: SimdValue<Element: HasAlias>> MyFrom<T> for OMatrix<T::Element> {}
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fn main() {}
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