32 lines
908 B
Rust
32 lines
908 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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use std::gc::Gc;
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fn borrow<T>(x: &T) -> &T {x}
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fn foo(cond: || -> bool, make_box: || -> Gc<int>) {
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let mut y: ∫
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loop {
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let x = make_box();
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// Here we complain because the resulting region
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// of this borrow is the fn body as a whole.
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y = borrow(&*x); //~ ERROR `*x` does not live long enough
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assert_eq!(*x, *y);
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if cond() { break; }
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}
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assert!(*y != 0);
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}
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fn main() {}
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