//@ known-bug: #105249 //@ compile-flags: -Zpolymorphize=on trait Foo { fn print<'a>(&'a self) where T: 'a { println!("foo"); } } impl<'a> Foo<&'a ()> for () { } trait Bar: for<'a> Foo<&'a ()> { } impl Bar for () {} fn main() { (&() as &dyn Bar).print(); // Segfault }