rust/tests/ui/structs/struct-path-associated-type.rs

38 lines
937 B
Rust

struct S;
trait Tr {
type A;
}
impl Tr for S {
type A = S;
}
fn f<T: Tr>() {
let s = T::A {};
//~^ ERROR expected struct, variant or union type, found associated type
let z = T::A::<u8> {};
//~^ ERROR expected struct, variant or union type, found associated type
//~| ERROR associated type takes 0 generic arguments but 1 generic argument was supplied
match S {
T::A {} => {}
//~^ ERROR expected struct, variant or union type, found associated type
}
}
fn g<T: Tr<A = S>>() {
let s = T::A {}; // OK
let z = T::A::<u8> {}; //~ ERROR associated type takes 0 generic arguments but 1 generic argument was supplied
match S {
T::A {} => {} // OK
}
}
fn main() {
let s = S::A {}; //~ ERROR ambiguous associated type
let z = S::A::<u8> {}; //~ ERROR ambiguous associated type
match S {
S::A {} => {} //~ ERROR ambiguous associated type
}
}