tests/ui/methods/disambiguate-multiple-blanket-impl.rs


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38

trait A {
    type Type;
    const CONST: usize;
    fn foo(&self);
}

trait B {
    type Type;
    const CONST: usize;
    fn foo(&self);
}

#[derive(Debug)]
struct S;

impl<T: std::fmt::Debug> A for T {
    type Type = ();
    const CONST: usize = 1; //~ NOTE candidate #1
    fn foo(&self) {} //~ NOTE candidate #1
}

impl<T: std::fmt::Debug> B for T {
    type Type = ();
    const CONST: usize = 2; //~ NOTE candidate #2
    fn foo(&self) {} //~ NOTE candidate #2
}

fn main() {
    let s = S;
    S::foo(&s); //~ ERROR multiple applicable items in scope
    //~^ NOTE multiple `foo` found
    //~| HELP use fully-qualified syntax to disambiguate
    S::CONST; //~ ERROR multiple applicable items in scope
    //~^ NOTE multiple `CONST` found
    //~| HELP use fully-qualified syntax to disambiguate
    let _: S::Type; //~ ERROR ambiguous associated type
    //~^ HELP use fully-qualified syntax
}