// Testing that this impl turns A into a Quux, because // A is already a Foo Bar Baz impl T: Quux { } trait Foo { fn f() -> int; } trait Bar { fn g() -> int; } trait Baz { fn h() -> int; } trait Quux: Foo, Bar, Baz { } struct A { x: int } impl A : Foo { fn f() -> int { 10 } } impl A : Bar { fn g() -> int { 20 } } impl A : Baz { fn h() -> int { 30 } } fn f(a: &T) { assert a.f() == 10; assert a.g() == 20; assert a.h() == 30; } fn main() { let a = &A { x: 3 }; f(a); }