24 lines
898 B
Rust
24 lines
898 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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// xfail-pretty -- comments are infaithfully preserved
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fn main() {
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let mut x: Option<int> = None;
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match x { //~ NOTE loan of mutable local variable granted here
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None => {}
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Some(ref i) => {
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// Not ok: i is an outstanding ptr into x.
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x = Some(*i+1); //~ ERROR assigning to mutable local variable prohibited due to outstanding loan
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}
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}
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copy x; // just to prevent liveness warnings
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}
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