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Adds memory to the heap.
Important
This function is obsolete. Beginning in Visual Studio 2015, it is not available in the CRT.
Syntax
int _heapadd(
void *memblock,
size_t size
);
Parameters
memblock
Pointer to the heap memory.
size
Size of memory to add, in bytes.
Return value
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.
Remarks
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.
Requirements
| Routine | Required header | Optional header |
|---|---|---|
_heapadd |
<malloc.h> | <errno.h> |
For more compatibility information, see Compatibility in the Introduction.
See also
Memory allocation
free
_heapchk
_heapmin
_heapset
_heapwalk
malloc
realloc