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