test18.c

debug source code under unix platform.

/*
 * mpatrol
 * A library for controlling and tracing dynamic memory allocations.
 * Copyright (C) 1997-2002 Graeme S. Roy <[e-mail]>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the Free
 * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307, USA.
 */


/*
 * Allocates a single byte of memory and then attempts to write a word
 * to the allocation, resulting in some unallocated bytes being written.
 * This can sometimes be detected with PAGEALLOC=UPPER but can always be
 * detected with OFLOWWATCH or by using the -fcheck-memory-usage option
 * of gcc.  The error will eventually be picked up if you are using
 * overflow buffers, but not immediately.
 */


#include "mpatrol.h"


int main(void)
{
    int *p;

    if (p = (int *) malloc(1))
    {
        p[0] = 0;
        free(p);
    }
    return EXIT_SUCCESS;
}