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// Test that dyn Foo<Bar = T> is invariant with respect to T.
// Failure to enforce invariance here can be weaponized, see #71550 for details.
trait Foo {
type Bar;
}
fn make() -> Box<dyn Foo<Bar = &'static u32>> {
panic!()
}
fn take<'a>(_: &'a u32) {
let _: Box<dyn Foo<Bar = &'a u32>> = make();
//~^ ERROR lifetime may not live long enough
}
fn main() {}
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