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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.
extern mod extra;
fn test_heap_to_heap() {
// a spills onto the heap
let mut a = ~[0, 1, 2, 3, 4];
a = a + a; // FIXME(#3387)---can't write a += a
assert_eq!(a.len(), 10u);
assert_eq!(a[0], 0);
assert_eq!(a[1], 1);
assert_eq!(a[2], 2);
assert_eq!(a[3], 3);
assert_eq!(a[4], 4);
assert_eq!(a[5], 0);
assert_eq!(a[6], 1);
assert_eq!(a[7], 2);
assert_eq!(a[8], 3);
assert_eq!(a[9], 4);
}
fn test_stack_to_heap() {
// a is entirely on the stack
let mut a = ~[0, 1, 2];
// a spills to the heap
a = a + a; // FIXME(#3387)---can't write a += a
assert_eq!(a.len(), 6u);
assert_eq!(a[0], 0);
assert_eq!(a[1], 1);
assert_eq!(a[2], 2);
assert_eq!(a[3], 0);
assert_eq!(a[4], 1);
assert_eq!(a[5], 2);
}
fn test_loop() {
// Make sure we properly handle repeated self-appends.
let mut a: ~[int] = ~[0];
let mut i = 20;
let mut expected_len = 1u;
while i > 0 {
error!("{}", a.len());
assert_eq!(a.len(), expected_len);
a = a + a; // FIXME(#3387)---can't write a += a
i -= 1;
expected_len *= 2u;
}
}
pub fn main() { test_heap_to_heap(); test_stack_to_heap(); test_loop(); }
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