rust/tests/ui/generic-associated-types/method-unsatisfied-assoc-ty...

32 lines
691 B
Rust

// Test that the predicate printed in an unresolved method error prints the
// generics for a generic associated type.
trait X {
type Y<T>;
}
trait M { //~ NOTE
fn f(&self) {}
}
impl<T: X<Y<i32> = i32>> M for T {}
//~^ NOTE trait bound `<S as X>::Y<i32> = i32` was not satisfied
//~| NOTE
//~| NOTE
//~| NOTE
struct S;
//~^ NOTE method `f` not found for this struct because it doesn't satisfy `<S as X>::Y<i32> = i32` or `S: M`
impl X for S {
type Y<T> = bool;
}
fn f(a: S) {
a.f();
//~^ ERROR the method `f` exists for struct `S`, but its trait bounds were not satisfied
//~| NOTE method cannot be called on `S` due to unsatisfied trait bounds
}
fn main() {}