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// The cases commented as "Leaks" need to not leak. Issue #2581
impl methods<T: copy> for ~[T] {
fn -(x: &[T]) -> ~[T] {
~[x[0], x[0], x[0]]
}
fn foo(x: &[T]) -> ~[T] {
~[x[0], x[0], x[0]]
}
}
impl methods<T: copy> for ~T {
fn +(rhs: ~T) -> ~T {
rhs
}
}
impl methods for ~int {
fn -(rhs: ~int) -> ~int {
~(*self - *rhs)
}
}
impl methods for @int {
fn +(rhs: @int) -> @int {
@(*self + *rhs)
}
}
fn main() {
// leaks
let mut bar = ~[1, 2, 3];
bar -= ~[3, 2, 1];
bar -= ~[4, 5, 6];
io::println(#fmt("%?", bar));
// okay
let mut bar = ~[1, 2, 3];
bar = bar.foo(~[3, 2, 1]);
bar = bar.foo(~[4, 5, 6]);
io::println(#fmt("%?", bar));
// okay
let mut bar = ~[1, 2, 3];
bar = bar - ~[3, 2, 1];
bar = bar - ~[4, 5, 6];
io::println(#fmt("%?", bar));
// Leaks
let mut bar = ~1;
bar += ~2;
bar += ~3;
io:: println(#fmt("%?", bar));
// Leaks
let mut bar = ~1;
bar -= ~2;
bar -= ~3;
io:: println(#fmt("%?", bar));
// Leaks
let mut bar = @1;
bar += @2;
bar += @3;
io:: println(#fmt("%?", bar));
}
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