25 lines
412 B
Rust
25 lines
412 B
Rust
//@ revisions: current next
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//@[next] compile-flags: -Znext-solver
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//@ ignore-compare-mode-next-solver (explicit revisions)
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//@check-pass
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#![feature(trait_upcasting, type_alias_impl_trait)]
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trait Super {
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type Assoc;
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}
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trait Sub: Super {}
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impl<T: ?Sized> Super for T {
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type Assoc = i32;
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}
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type Foo = impl Sized;
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fn upcast(x: &dyn Sub<Assoc = Foo>) -> &dyn Super<Assoc = i32> {
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x
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}
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fn main() {}
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