heapadd.md

description	title	ms.date	api_name	api_location	api_type	topic_type	f1_keywords	helpviewer_keywords	ms.assetid
Learn more about: _heapadd	_heapadd	11/04/2016	_heapadd	msvcr100.dll msvcr110_clr0400.dll msvcr120.dll msvcr80.dll msvcrt.dll msvcr110.dll msvcr90.dll	DLLExport	apiref	heapadd _heapadd	_heapadd function memory, adding to heaps heaps, adding memory heapadd function	4d691fe2-2763-49f4-afb1-62738b7cd3ff

_heapadd

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This function is obsolete.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