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 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