trait X<'a> | |
where | |
for<'b> <Self as X<'b>>::U: Clone, | |
{ | |
type U: ?Sized; | |
fn f(&self, x: &Self::U) { | |
<Self::U>::clone(x); | |
} | |
} | |
impl X<'_> for i32 { | |
type U = str; | |
//~^ ERROR the trait bound `for<'b> <i32 as X<'b>>::U: std::clone::Clone` | |
} | |
fn main() { | |
1i32.f("abc"); | |
} |