rust/src/test/ui/span/regions-escape-loop-via-variable.rs
2017-12-14 22:45:45 -08:00

25 lines
780 B
Rust

// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
fn main() {
let x = 3;
// Here, the variable `p` gets inferred to a type with a lifetime
// of the loop body. The regionck then determines that this type
// is invalid.
let mut p = &x;
loop {
let x = 1 + *p;
p = &x;
}
//~^^ ERROR `x` does not live long enough
}