rust/src/test/run-pass/resource-cycle.rs
2012-09-07 14:02:33 -07:00

62 lines
1.5 KiB
Rust

// Don't leak the unique pointers
struct r {
v: *int,
drop unsafe {
debug!("r's dtor: self = %x, self.v = %x, self.v's value = %x",
unsafe::reinterpret_cast::<*r, uint>(&ptr::addr_of(self)),
unsafe::reinterpret_cast::<**int, uint>(&ptr::addr_of(self.v)),
unsafe::reinterpret_cast::<*int, uint>(&self.v));
let v2: ~int = unsafe::reinterpret_cast(&self.v); }
}
fn r(v: *int) -> r unsafe {
r {
v: v
}
}
enum t = {
mut next: Option<@t>,
r: r
};
fn main() unsafe {
let i1 = ~0;
let i1p = unsafe::reinterpret_cast(&i1);
unsafe::forget(i1);
let i2 = ~0;
let i2p = unsafe::reinterpret_cast(&i2);
unsafe::forget(i2);
let x1 = @t({
mut next: None,
r: {
let rs = r(i1p);
debug!("r = %x",
unsafe::reinterpret_cast::<*r, uint>(&ptr::addr_of(rs)));
rs }
});
debug!("x1 = %x, x1.r = %x",
unsafe::reinterpret_cast::<@t, uint>(&x1),
unsafe::reinterpret_cast::<*r, uint>(&ptr::addr_of(x1.r)));
let x2 = @t({
mut next: None,
r: {
let rs = r(i2p);
debug!("r2 = %x",
unsafe::reinterpret_cast::<*r, uint>(&ptr::addr_of(rs)));
rs
}
});
debug!("x2 = %x, x2.r = %x",
unsafe::reinterpret_cast::<@t, uint>(&x2),
unsafe::reinterpret_cast::<*r, uint>(&ptr::addr_of(x2.r)));
x1.next = Some(x2);
x2.next = Some(x1);
}