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 #include <stdio.h> 28 #include "mtmalloc.h" 29 30 /* 31 * test double free. The first double free should be fine. 32 * the next double free should result in a core dump. 33 * 34 * cc -O -o dblfree dblfree.c -I../common -lmtmalloc 35 */ 36 main(int argc,char ** argv)37main(int argc, char ** argv) 38 { 39 char *foo; 40 41 foo = malloc(10); 42 free(foo); 43 44 mallocctl(MTDOUBLEFREE, 1); 45 46 printf("Double free coming up\n"); 47 printf("This should NOT dump core.\n"); 48 free(foo); 49 50 foo = malloc(10); 51 free(foo); 52 53 mallocctl(MTDOUBLEFREE, 0); 54 55 printf("Double free coming up\n"); 56 printf("This should dump core.\n"); 57 58 free(foo); 59 } 60