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 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 /* 29 * ASSERTION: offsetof can be used anywhere in a D program that an integer 30 * constant can be used. 31 * 32 * SECTION: Structs and Unions/Member Sizes and Offsets 33 * 34 * NOTES: 35 * 36 */ 37 38 #pragma D option quiet 39 40 typedef struct record { 41 char c; 42 int x; 43 int y; 44 } record_t; 45 46 BEGIN 47 { 48 49 add = offsetof(record_t, c) + offsetof(record_t, x) + 50 offsetof(record_t, y); 51 sub = offsetof(record_t, y) - offsetof(record_t, x); 52 mul = offsetof(record_t, x) * offsetof(record_t, c); 53 div = offsetof(record_t, y) / offsetof(record_t, x); 54 55 printf("offsetof(record_t, c) = %d\n", offsetof(record_t, c)); 56 printf("offsetof(record_t, x) = %d\n", offsetof(record_t, x)); 57 printf("offsetof(record_t, y) = %d\n", offsetof(record_t, y)); 58 59 printf("Addition of offsets (c+x+y)= %d\n", add); 60 printf("Subtraction of offsets (y-x)= %d\n", sub); 61 printf("Multiplication of offsets (x*c) = %d\n", mul); 62 printf("Division of offsets (y/x) = %d\n", div); 63 64 exit(0); 65 } 66 67 END 68 /(8 != offsetof(record_t, y)) || (4 != offsetof(record_t, x)) || 69 (0 != offsetof(record_t, c)) || (12 != add) || (4 != sub) || (0 != mul) 70 || (2 != div)/ 71 { 72 exit(1); 73 } 74