Heap *MakeHeap()
{
	if(heap_closed__)
		return &Heap::aux;
	
	if(heap_tls__)
		return heap_tls__;

	static thread_local byte sHeap__[sizeof(Heap)]; // zero initialization is fine for us
	heap_tls__ = (Heap *)sHeap__;

	static thread_local HeapExitThreadGuard __;
	__.Used(); // "odr-used", register allocator to be shutdown at thread exit

	return heap_tls__;
}