19 lines
325 B
Rust
19 lines
325 B
Rust
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//@ known-bug: #137190
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trait Supertrait<T> {
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fn method(&self) {}
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}
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trait Trait<P>: Supertrait<()> {}
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impl<P> Trait<P> for () {}
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const fn upcast<P>(x: &dyn Trait<P>) -> &dyn Supertrait<()> {
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x
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}
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const fn foo() -> &'static dyn Supertrait<()> {
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upcast::<()>(&())
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}
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const _: &'static dyn Supertrait<()> = foo();
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