49 lines
1.3 KiB
Rust
49 lines
1.3 KiB
Rust
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// Copyright 2016 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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// Test closure that:
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//
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// - takes an argument `y`
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// - stores `y` into another, longer-lived spot
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//
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// *but* the signature of the closure doesn't indicate that `y` lives
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// long enough for that. The closure reports the error (and hence we
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// see it before the closure's "external requirements" report).
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// compile-flags:-Znll -Zborrowck=mir -Zverbose
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#![feature(rustc_attrs)]
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#[rustc_regions]
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fn test() {
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let x = 44;
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let mut p = &x;
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{
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let y = 22;
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let mut closure = expect_sig(|p, y| *p = y);
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//~^ ERROR free region `'_#4r` does not outlive free region `'_#3r`
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//~| WARNING not reporting region error due to -Znll
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closure(&mut p, &y);
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}
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deref(p);
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}
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fn expect_sig<F>(f: F) -> F
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where F: FnMut(&mut &i32, &i32)
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{
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f
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}
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fn deref(_p: &i32) { }
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fn main() { }
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