rust/src/test/run-pass/expr-copy.rs

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// 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.
2012-09-19 16:50:00 -05:00
// xfail-fast
#[legacy_modes];
fn f(arg: A) {
arg.a = 100;
}
struct A { mut a: int }
fn main() {
let x = A {a: 10};
f(x);
assert x.a == 100;
x.a = 20;
f(copy x);
assert x.a == 20;
}