26 lines
899 B
Rust
26 lines
899 B
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// 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 int) -> &'b mut int {
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&mut **p //~ ERROR lifetime of `p` is too short
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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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