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// build-pass (FIXME(62277): could be check-pass?)
// 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.
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() { }
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