File: issue-80433.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 (32 lines) | stat: -rw-r--r-- 591 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
#[derive(Default)]
struct E<T> {
    data: T,
}

trait TestMut {
    type Output<'a>;
    fn test_mut<'a>(&'a mut self) -> Self::Output<'a>;
}

impl<T> TestMut for E<T>
where
    T: 'static,
{
    type Output<'a> = &'a mut T;
    fn test_mut<'a>(&'a mut self) -> Self::Output<'a> {
        &mut self.data
    }
}

fn test_simpler<'a>(dst: &'a mut impl TestMut<Output = &'a mut f32>)
  //~^ ERROR missing generics for associated type
{
    for n in 0i16..100 {
        *dst.test_mut() = n.into();
    }
}

fn main() {
    let mut t1: E<f32> = Default::default();
    test_simpler(&mut t1);
}