include/stddef.h

   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, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*      Copyright (c) 1988 AT&T */
  23 /*        All Rights Reserved   */
  24
  25
  26 /*
  27  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  28  * Use is subject to license terms.
  29  */
  30
  31 #ifndef _STDDEF_H
  32 #define _STDDEF_H
  33
  34 #pragma ident   "%Z%%M% %I%     %E% SMI"
  35
  36 #include <sys/isa_defs.h>
  37 #include <iso/stddef_iso.h>
  38
  39 /*
  40  * Allow global visibility for symbols defined in
  41  * C++ "std" namespace in <iso/stddef_iso.h>.
  42  */
  43 #if __cplusplus >= 199711L
  44 using std::ptrdiff_t;
  45 using std::size_t;
  46 #endif
  47
  48 #ifdef  __cplusplus
  49 extern "C" {
  50 #endif
  51
  52 /*
  53  * wchar_t is a built-in type in standard C++ and as such is not
  54  * defined here when using standard C++. However, the GNU compiler
  55  * fixincludes utility nonetheless creates its own version of this
  56  * header for use by gcc and g++. In that version it adds a redundant
  57  * guard for __cplusplus. To avoid the creation of a gcc/g++ specific
  58  * header we need to include the following magic comment:
  59  *
  60  * we must use the C++ compiler's type
  61  *
  62  * The above comment should not be removed or changed until GNU
  63  * gcc/fixinc/inclhack.def is updated to bypass this header.
  64  */
  65 #if !defined(__cplusplus) || (__cplusplus < 199711L && !defined(__GNUG__))
  66 #ifndef _WCHAR_T
  67 #define _WCHAR_T
  68 #if defined(_LP64)
  69 typedef int     wchar_t;
  70 #else
  71 typedef long    wchar_t;
  72 #endif
  73 #endif  /* !_WCHAR_T */
  74 #endif  /* !defined(__cplusplus) ... */
  75
  76 #ifdef  __cplusplus
  77 }
  78 #endif
  79
  80 #endif  /* _STDDEF_H */