File: capture-lifetime-not-in-hir.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 (21 lines) | stat: -rw-r--r-- 482 bytes parent folder | download | duplicates (2) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
 
#![feature(rustc_attrs)]
#![rustc_variance_of_opaques]

trait Bar<'a> {
    type Assoc: From<()>;
}

fn foo<'a, T: Bar<'a>>() -> impl Into<T::Assoc> {
    //~^ ERROR [o, o]
    // captures both T and 'a invariantly
    ()
}

fn foo2<'a, T: Bar<'a>>() -> impl Into<T::Assoc> + 'a {
    //~^ ERROR [o, o, o]
    // captures both T and 'a invariantly, and also duplicates `'a`
    // i.e. the opaque looks like `impl Into<<T as Bar<'a>>::Assoc> + 'a_duplicated`
    ()
}

fn main() {}