22 lines
452 B
Rust
22 lines
452 B
Rust
// check-pass
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use std::ops::Deref;
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trait Bar<T> {}
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trait Foo: Bar<i32> {
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fn as_dyn_bar_u32<'a>(&self) -> &(dyn Bar<u32> + 'a);
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}
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impl<'a> Deref for dyn Foo + 'a {
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//~^ WARN this `Deref` implementation is covered by an implicit supertrait coercion
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//~| WARN this will change its meaning in a future release!
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type Target = dyn Bar<u32> + 'a;
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fn deref(&self) -> &Self::Target {
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self.as_dyn_bar_u32()
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}
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}
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fn main() {}
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