usr/src/cmd/dtrace/test/tst/common/pointers/tst.VoidCast.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  * Can dereference a void * pointer only by casting it to another type.
  32  *
  33  * SECTION: Pointers and Arrays/Generic Pointers
  34  */
  35
  36 #pragma D option quiet
  37
  38 void *p;
  39
  40 int array[3];
  41
  42 BEGIN
  43 {
  44         array[0] = 234;
  45         array[1] = 334;
  46         array[2] = 434;
  47
  48         p = &array[0];
  49         newp = (int *) p;
  50
  51         printf("array[0]: %d, newp: %d\n", array[0], *newp);
  52         exit(0);
  53 }
  54
  55 END
  56 /234 != *newp/
  57 {
  58         exit(1);
  59 }