import libc, sys, unsafe; enum arena = (); type bcx& = { fcx: &fcx }; type fcx& = { arena: &arena, ccx: &ccx }; type ccx = { x: int }; fn alloc(_bcx : &a.arena) -> &a.bcx unsafe { ret unsafe::reinterpret_cast(libc::malloc(sys::size_of::())); } fn h(bcx : &a.bcx) -> &a.bcx { ret alloc(bcx.fcx.arena); } fn g(fcx : &fcx) { let bcx = { fcx: fcx }; let bcx2 = h(&bcx); unsafe { libc::free(unsafe::reinterpret_cast(bcx2)); } } fn f(ccx : &ccx) { let a = arena(()); let fcx = { arena: &a, ccx: ccx }; ret g(&fcx); } fn main() { let ccx = { x: 0 }; f(&ccx); }