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 #include <sys/isa_defs.h>
  35 #include <iso/stddef_iso.h>
  36 #include <sys/stddef.h>
  37
  38 /*
  39  * Allow global visibility for symbols defined in
  40  * C++ "std" namespace in <iso/stddef_iso.h>.
  41  */
  42 #if __cplusplus >= 199711L
  43 using std::ptrdiff_t;
  44 using std::size_t;
  45 #endif
  46
  47 #ifdef  __cplusplus
  48 extern "C" {
  49 #endif
  50
  51 /*
  52  * wchar_t is a built-in type in standard C++ and as such is not
  53  * defined here when using standard C++. However, the GNU compiler
  54  * fixincludes utility nonetheless creates its own version of this
  55  * header for use by gcc and g++. In that version it adds a redundant
  56  * guard for __cplusplus. To avoid the creation of a gcc/g++ specific
  57  * header we need to include the following magic comment:
  58  *
  59  * we must use the C++ compiler's type
  60  *
  61  * The above comment should not be removed or changed until GNU
  62  * gcc/fixinc/inclhack.def is updated to bypass this header.
  63  */
  64 #if !defined(__cplusplus) || (__cplusplus < 199711L && !defined(__GNUG__))
  65 #ifndef _WCHAR_T
  66 #define _WCHAR_T
  67 #if defined(_LP64)
  68 typedef int     wchar_t;
  69 #else
  70 typedef long    wchar_t;
  71 #endif
  72 #endif  /* !_WCHAR_T */
  73 #endif  /* !defined(__cplusplus) ... */
  74
  75 #ifdef  __cplusplus
  76 }
  77 #endif
  78
  79 #endif  /* _STDDEF_H */