1 #![feature(associated_type_defaults)] 2 3 // This used to cause an ICE because assoc. type defaults weren't properly 4 // type-checked. 5 6 trait Foo<T: Default + ToString> { 7 type Out: Default + ToString + ?Sized = dyn ToString; //~ ERROR not satisfied 8 } 9 10 impl Foo<u32> for () {} 11 impl Foo<u64> for () {} 12 main()13fn main() { 14 assert_eq!(<() as Foo<u32>>::Out::default().to_string(), "false"); 15 //~^ ERROR no function or associated item named `default` found for trait object 16 } 17