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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* 28 * Copyright (c) 2012 by Delphix. All rights reserved. 29 */ 30 31 /* 32 * ASSERTION: Demonstrating valid memory access. 33 * 34 * SECTION: Pointers and Arrays/Pointers and Addresses 35 * 36 * NOTES: 37 * 38 */ 39 40 #pragma D option quiet 41 42 BEGIN 43 { 44 x = (int *)alloca(sizeof (int)); 45 printf("Address x: %x\n", (int)x); 46 y = (int *)(x - 2); 47 *y = 3; 48 printf("Address y: %x\tValue: %d\n", (int)y, *y); 49 exit(0); 50 } 51 52 ERROR 53 { 54 exit(1); 55 } 56