mirror of https://github.com/rust-lang/rust
17 lines
446 B
Rust
17 lines
446 B
Rust
// Issue #8624. Tests that reborrowing the contents of an `&'b mut`
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// pointer which is backed by another `&'a mut` can only be done
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// for `'a` (which must be a sublifetime of `'b`).
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fn copy_borrowed_ptr<'a, 'b>(p: &'a mut &'b mut isize) -> &'b mut isize {
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&mut **p
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//~^ ERROR lifetime may not live long enough
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}
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fn main() {
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let mut x = 1;
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let mut y = &mut x;
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let z = copy_borrowed_ptr(&mut y);
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*y += 1;
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*z += 1;
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}
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