File: impl-substs.rs

package info (click to toggle)
rustc 1.85.0%2Bdfsg3-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental, sid, trixie
  • size: 893,396 kB
  • sloc: xml: 158,127; python: 35,830; javascript: 19,497; cpp: 19,002; sh: 17,245; ansic: 13,127; asm: 4,376; makefile: 1,051; perl: 29; lisp: 29; ruby: 19; sql: 11
file content (15 lines) | stat: -rw-r--r-- 322 bytes parent folder | download | duplicates (10) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
 
#![feature(rustc_attrs)]

trait Foo<A> {
    fn foo(self);
}

#[rustc_on_unimplemented = "an impl did not match: {A} {B} {C}"]
impl<A, B, C> Foo<A> for (A, B, C) {
    fn foo(self) {}
}

fn main() {
    Foo::<usize>::foo((1i32, 1i32, 1i32));
    //~^ ERROR the trait bound `(i32, i32, i32): Foo<usize>` is not satisfied
}