rust/src/test/run-pass/borrowck-preserve-cond-box.rs

41 lines
933 B
Rust

// 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.
// exec-env:RUST_POISON_ON_FREE=1
fn testfn(cond: bool) {
let mut x = @3;
let mut y = @4;
// borrow x and y
let mut r_x = &*x;
let mut r_y = &*y;
let mut r = r_x, exp = 3;
if cond {
r = r_y;
exp = 4;
}
debug!("*r = %d, exp = %d", *r, exp);
assert *r == exp;
x = @5;
y = @6;
debug!("*r = %d, exp = %d", *r, exp);
assert *r == exp;
}
pub fn main() {
testfn(true);
testfn(false);
}