1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright (c) 1998 by Sun Microsystems, Inc.
24 * All rights reserved.
25 */
26
27 #pragma ident "%Z%%M% %I% %E% SMI"
28
29 #include <stdio.h>
30 #include <stdlib.h>
31 #include <unistd.h>
32 #include <sys/types.h>
33 #include "mtmalloc.h"
34
35 /*
36 * This file tests for reference after free
37 *
38 * cc -O -o dirtymem dirtymem.c -lmtmalloc -I../common
39 */
40
41 struct a_struct {
42 int a;
43 char *b;
44 double c;
45 } struct_o_death;
46
47
main(int argc,char ** argv)48 main(int argc, char ** argv)
49 {
50 struct a_struct *foo, *leak;
51 int ncpus = sysconf(_SC_NPROCESSORS_CONF);
52
53 mallocctl(MTDEBUGPATTERN, 1);
54 foo = (struct a_struct *)malloc(sizeof (struct_o_death));
55
56 free(foo);
57 foo->a = 4;
58
59 /*
60 * We have to make sure we allocate from the same pool
61 * as the last time. Turn the rotor with malloc until
62 * we get back to where we started.
63 */
64 while (ncpus-- > 1)
65 leak = malloc(sizeof (struct_o_death));
66
67 fprintf(stderr, "malloc struct again\n");
68 fprintf(stderr, "we should dump core\n");
69 foo = malloc(sizeof (struct_o_death));
70
71 exit(0);
72 }
73