35 lines
979 B
Rust
35 lines
979 B
Rust
// 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 that a borrow which starts as a 2-phase borrow and gets
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// carried around a loop winds up conflicting with itself.
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#![feature(nll)]
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struct Foo { x: String }
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impl Foo {
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fn get_string(&mut self) -> &str {
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&self.x
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}
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}
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fn main() {
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let mut foo = Foo { x: format!("Hello, world") };
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let mut strings = vec![];
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loop {
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strings.push(foo.get_string()); //~ ERROR cannot borrow `foo` as mutable
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if strings.len() > 2 { break; }
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}
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println!("{:?}", strings);
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}
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