File: escaping-bounds.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 (22 lines) | stat: -rw-r--r-- 680 bytes parent folder | download | duplicates (5)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
//@ check-pass

// Ensure that we don't ICE when an alias that has escaping bound vars is
// required to be live. This is because the code that allows us to deduce an
// appropriate outlives bound for a given alias type (in this test, a
// projection) does not handle aliases with escaping bound vars.
// See <https://github.com/rust-lang/rust/issues/117455>.

trait Foo {
    type Assoc<'a, 'b>: 'static;
}

struct MentionsLifetimeAndType<'a, T>(&'a (), T);

fn foo<'a, 'b, T: Foo>(_: <T as Foo>::Assoc<'a, 'b>) {}

fn test<'b, T: Foo>() {
    let y: MentionsLifetimeAndType<'_, for<'a> fn(<T as Foo>::Assoc<'a, 'b>)> =
        MentionsLifetimeAndType(&(), foo);
}

fn main() {}