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