}

	if size == 0 {
		return unsafe.Pointer(&zerobase)
	}

	// It's possible for any malloc to trigger sweeping, which may in
	// turn queue finalizers. Record this dynamic lock edge.
	lockRankMayQueueFinalizer()

	userSize := size
	if asanenabled {
		// Refer to ASAN runtime library, the malloc() function allocates extra memory,
		// the redzone, around the user requested memory region. And the redzones are marked