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/******************************************************************************
* Copyright (c) 2004, 2008 IBM Corporation
* All rights reserved.
* This program and the accompanying materials
* are made available under the terms of the BSD License
* which accompanies this distribution, and is available at
* http://www.opensource.org/licenses/bsd-license.php
*
* Contributors:
* IBM Corporation - initial implementation
*****************************************************************************/
#include "stdlib.h"
#include "string.h"
#include "malloc_defs.h"
void *
realloc(void *ptr, size_t size)
{
struct chunk *header;
char *newptr, *start;
header = (struct chunk *) ptr;
header--;
if (size <= header->length)
return ptr;
newptr = (char *) malloc(size);
if (newptr == NULL)
return 0;
start = newptr;
memcpy((void *) newptr, (const void *) ptr, header->length);
header->inuse = 0;
return start;
}
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