// Don't leak the unique pointers type u = { a: int, b: int, c: *int }; struct r { let v: u; new(v: u) { self.v = v; } drop unsafe { let v2: ~int = unsafe::reinterpret_cast(self.v.c); } } enum t = { mut next: option<@t>, r: r }; fn main() unsafe { let i1 = ~0xA; let i1p = unsafe::reinterpret_cast(i1); unsafe::forget(i1); let i2 = ~0xA; let i2p = unsafe::reinterpret_cast(i2); unsafe::forget(i2); let u1 = {a: 0xB, b: 0xC, c: i1p}; let u2 = {a: 0xB, b: 0xC, c: i2p}; let x1 = @t({ mut next: none, r: r(u1) }); let x2 = @t({ mut next: none, r: r(u2) }); x1.next = some(x2); x2.next = some(x1); }