File: method-unsatisfied-assoc-type-predicate.rs

package info (click to toggle)
rustc 1.70.0%2Bdfsg1-9
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 722,120 kB
  • sloc: xml: 147,962; javascript: 10,210; sh: 8,590; python: 8,220; ansic: 5,901; cpp: 4,635; makefile: 4,001; asm: 2,856
file content (33 lines) | stat: -rw-r--r-- 697 bytes parent folder | download | duplicates (3)
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
// 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 {
    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
//~| NOTE doesn't satisfy `<S as X>::Y<i32> = i32`
//~| NOTE doesn't satisfy `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() {}