Why does _get_heap_handle equal to GetProcessHeap?

Question

According to this article, CRT uses separate heap (is it private heap?), but this little example shows that CRT heap and Default heap are the same

Answer 1

The C Runtime source (malloc.c) shows that all the CRT allocations are created from _crtheap (which is what _get_heap_handle returns). In heapinit.c, _crtheap is set to GetProcessHeap. There's a separate allocation routine in smalheap.c that sets _crtheap to HeapCreate.

However, it's not clear to me (there's no project file, unfortunately) which CRT versions use smalheap.c and which CRT versions use heapinit.c.