File: in-assoc-type.rs

package info (click to toggle)
rustc-web 1.78.0%2Bdfsg1-2~deb11u3
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,245,360 kB
  • sloc: xml: 147,985; javascript: 18,022; sh: 11,083; python: 10,265; ansic: 6,172; cpp: 5,023; asm: 4,390; makefile: 4,269
file content (24 lines) | stat: -rw-r--r-- 489 bytes parent folder | download | duplicates (6) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
 
//! This test checks that we don't allow registering hidden types for
//! opaque types from other impls.

#![feature(impl_trait_in_assoc_type)]

trait Foo<T> {
    type Bar;
    fn foo(&self) -> <Self as Foo<()>>::Bar
    where
        Self: Foo<()>;
}

impl Foo<()> for () {
    type Bar = impl std::fmt::Debug;
    fn foo(&self) -> Self::Bar {}
}

impl Foo<i32> for () {
    type Bar = u32;
    fn foo(&self) -> <Self as Foo<()>>::Bar {}
    //~^ ERROR: mismatched types
}

fn main() {}