Adds memory to the heap.

int _heapadd(
   void *memblock,
   size_t size
);

memblock
Pointer to the heap memory.

size
Size of memory to add, in bytes.

If successful, _heapadd returns 0; otherwise, the function returns -1 and sets errno to ENOSYS.

For more information about this and other return codes, see errno, _doserrno, _sys_errlist, and _sys_nerr.

Beginning with Visual C++ version 4.0, the underlying heap structure was moved to the C run-time libraries to support the new debugging features. As a result, _heapadd is no longer supported on any platform that is based on the Win32 API.

For more compatibility information, see Compatibility in the Introduction.

Memory allocation
free
_heapchk
_heapmin
_heapset
_heapwalk
malloc
realloc