rust/src/test/run-pass/swap-overlapping.rs

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// Copyright 2013 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.
// Issue #5041 - avoid overlapping memcpy when src and dest of a swap are the same
pub fn main() {
let mut test = TestDescAndFn {
desc: TestDesc {
name: DynTestName(~"test"),
should_fail: false
},
testfn: DynTestFn(|| ()),
};
do_swap(&mut test);
}
fn do_swap(test: &mut TestDescAndFn) {
*test <-> *test;
}
pub enum TestName {
DynTestName(~str)
}
pub enum TestFn {
DynTestFn(~fn()),
DynBenchFn(~fn(&mut int))
}
pub struct TestDesc {
name: TestName,
should_fail: bool
}
pub struct TestDescAndFn {
desc: TestDesc,
testfn: TestFn,
}