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librustc: Don't allow use after move of implicitly coerced object. Fixes
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37 changes: 37 additions & 0 deletions
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src/test/compile-fail/use-after-move-implicity-coerced-object.rs
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// Copyright 2014 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. | ||
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struct Number { | ||
n: i64 | ||
} | ||
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impl ToStr for Number { | ||
fn to_str(&self) -> ~str { | ||
self.n.to_str() | ||
} | ||
} | ||
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struct List { | ||
list: ~[~ToStr] | ||
} | ||
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impl List { | ||
fn push(&mut self, n: ~ToStr) { | ||
self.list.push(n); | ||
} | ||
} | ||
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fn main() { | ||
let n = ~Number { n: 42 }; | ||
let mut l = ~List { list: ~[] }; | ||
l.push(n); | ||
//^~ NOTE: `n` moved here because it has type `~Number`, which is non-copyable (perhaps you meant to use clone()?) | ||
let x = n.to_str(); //~ ERROR: use of moved value: `n` | ||
} |