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27 lines
591 B
Rust
27 lines
591 B
Rust
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//@ check-pass
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//@ revisions: current next
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//@ ignore-compare-mode-next-solver (explicit revisions)
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//@[next] compile-flags: -Znext-solver
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// Verify that the unsize goal can cast a higher-ranked trait goal to
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// a non-higer-ranked instantiation.
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#![feature(unsize)]
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use std::marker::Unsize;
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fn test<T: ?Sized, U: ?Sized>()
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where
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T: Unsize<U>,
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{
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}
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fn main() {
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test::<dyn for<'a> Fn(&'a ()) -> &'a (), dyn FnOnce(&'static ()) -> &'static ()>();
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trait Foo: for<'a> Bar<'a> {}
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trait Bar<'a> {}
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test::<dyn Foo, dyn Bar<'static>>();
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test::<dyn Foo, dyn Bar<'_>>();
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}
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