File: issue-110161.rs

package info (click to toggle)
rustc 1.88.0%2Bdfsg1-2
  • links: PTS, VCS
  • area: main
  • in suites: experimental, forky, sid
  • size: 934,168 kB
  • sloc: xml: 158,127; python: 36,062; javascript: 19,855; sh: 19,700; cpp: 18,947; ansic: 12,993; asm: 4,792; makefile: 690; perl: 29; lisp: 29; ruby: 19; sql: 11
file content (26 lines) | stat: -rw-r--r-- 561 bytes parent folder | download | duplicates (18)
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
// ICE regression relating to unconstrained lifetimes in implied
// bounds. See #110161.

//@ compile-flags: --crate-type=lib

trait LtTrait {
    type Ty;
}

// erroneous `Ty` impl
impl LtTrait for () {
//~^ ERROR not all trait items implemented, missing: `Ty` [E0046]
}

// `'lt` is not constrained by the erroneous `Ty`
impl<'lt, T> LtTrait for Box<T>
where
    T: LtTrait<Ty = &'lt ()>,
{
    type Ty = &'lt ();
}

// unconstrained lifetime appears in implied bounds
fn test(_: <Box<()> as LtTrait>::Ty) {}

fn test2<'x>(_: &'x <Box<()> as LtTrait>::Ty) {}