/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2006 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #pragma ident "%Z%%M% %I% %E% SMI" /* * ASSERTION: offsetof can be used anywhere in a D program that an integer * constant can be used. * * SECTION: Structs and Unions/Member Sizes and Offsets * * NOTES: * */ #pragma D option quiet typedef struct record { char c; int x; int y; } record_t; BEGIN { add = offsetof(record_t, c) + offsetof(record_t, x) + offsetof(record_t, y); sub = offsetof(record_t, y) - offsetof(record_t, x); mul = offsetof(record_t, x) * offsetof(record_t, c); div = offsetof(record_t, y) / offsetof(record_t, x); printf("offsetof(record_t, c) = %d\n", offsetof(record_t, c)); printf("offsetof(record_t, x) = %d\n", offsetof(record_t, x)); printf("offsetof(record_t, y) = %d\n", offsetof(record_t, y)); printf("Addition of offsets (c+x+y)= %d\n", add); printf("Subtraction of offsets (y-x)= %d\n", sub); printf("Multiplication of offsets (x*c) = %d\n", mul); printf("Division of offsets (y/x) = %d\n", div); exit(0); } END /(8 != offsetof(record_t, y)) || (4 != offsetof(record_t, x)) || (0 != offsetof(record_t, c)) || (12 != add) || (4 != sub) || (0 != mul) || (2 != div)/ { exit(1); } |