rust/tests/ui/traits/new-solver/trait-upcast-lhs-needs-normalization.rs

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2023-07-07 15:42:37 -05:00
// check-pass
// compile-flags: -Ztrait-solver=next
pub trait A {}
pub trait B: A {}
pub trait Mirror {
type Assoc: ?Sized;
}
impl<T: ?Sized> Mirror for T {
type Assoc = T;
}
pub fn foo<'a>(x: &'a <dyn B + 'static as Mirror>::Assoc) -> &'a (dyn A + 'static) {
x
}
fn main() {}