mirror of https://github.com/rust-lang/rust
20 lines
619 B
Rust
20 lines
619 B
Rust
trait A<T> { }
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struct B<'a, T:'a>(&'a (dyn A<T> + 'a));
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trait X { }
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impl<'a, T> X for B<'a, T> {}
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fn i<'a, T, U>(v: Box<dyn A<U>+'a>) -> Box<dyn X + 'static> {
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Box::new(B(&*v)) as Box<dyn X>
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//~^ ERROR the parameter type `U` may not live long enough [E0310]
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//~| ERROR the parameter type `U` may not live long enough [E0310]
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//~| ERROR the parameter type `U` may not live long enough [E0310]
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//~| ERROR lifetime may not live long enough
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//~| ERROR cannot return value referencing local data `*v` [E0515]
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//~| ERROR the parameter type `U` may not live long enough [E0310]
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}
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fn main() {}
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