usr/src/cmd/dtrace/test/tst/common/pointers/tst.PointerArithmetic3.d

   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 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 /*
  30  * ASSERTION:
  31  * Pointer arithmetic implicitly adjusts the underlying address by
  32  * multiplying or dividing the operands by the size of the type referenced
  33  * by the pointer.
  34  *
  35  * SECTION: Pointers and Arrays/Pointer Arithmetic
  36  *
  37  * NOTES:
  38  *
  39  */
  40
  41 #pragma D option quiet
  42
  43 int *x;
  44 int *y;
  45 int a[5];
  46
  47 BEGIN
  48 {
  49         x = &a[0];
  50         y = &a[2];
  51
  52         printf("y-x: %x\n", (int) (y-x));
  53         exit(0);
  54 }
  55
  56 END
  57 /(2 != (int) (y-x)) /
  58 {
  59         printf("Error");
  60         exit(1);
  61 }