| //@ check-pass | |
| #![allow(dead_code)] | |
| // Regression test for #24085. Errors were occurring in region | |
| // inference due to the requirement that `'a:b'`, which was getting | |
| // incorrectly codegened in connection with the closure below. | |
| #[derive(Copy,Clone)] | |
| struct Path<'a:'b, 'b> { | |
| x: &'a i32, | |
| tail: Option<&'b Path<'a, 'b>> | |
| } | |
| #[allow(dead_code, unconditional_recursion)] | |
| fn foo<'a,'b,F>(p: Path<'a, 'b>, mut f: F) | |
| where F: for<'c> FnMut(Path<'a, 'c>) { | |
| foo(p, |x| f(x)) | |
| } | |
| fn main() { } |