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https://github.com/rust-lang/rust
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22 lines
422 B
Rust
22 lines
422 B
Rust
//@ 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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//@ check-pass
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trait Trait {}
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impl<T> Trait for T {}
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trait Noop {
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type Assoc: ?Sized;
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}
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impl<T: ?Sized> Noop for T {
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type Assoc = T;
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}
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struct NoopNewtype<T: ?Sized + Noop>(T::Assoc);
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fn coerce_newtype<T: Trait>(x: &NoopNewtype<T>) -> &NoopNewtype<dyn Trait + '_> {
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x
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}
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fn main() {}
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