| /****************************************************************************** |
| * 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; |
| } |