ALLOC_BOUNDARY
ctx = (uhash_ctx_t)malloc(sizeof(uhash_ctx)+ALLOC_BOUNDARY);
if (ALLOC_BOUNDARY) {
bytes_to_add = ALLOC_BOUNDARY -
((ptrdiff_t)ctx & (ALLOC_BOUNDARY -1));
if (ALLOC_BOUNDARY) {
if (ALLOC_BOUNDARY)
freezero(ctx, sizeof(*ctx) + ALLOC_BOUNDARY);
octx = ctx = xcalloc(1, sizeof(*ctx) + ALLOC_BOUNDARY);
if (ALLOC_BOUNDARY) {
bytes_to_add = ALLOC_BOUNDARY -
((ptrdiff_t)ctx & (ALLOC_BOUNDARY - 1));