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libiconv v1.14

    1: /* A substitute for POSIX 2008 <stddef.h>, for platforms that have issues.
    2: 
    3:    Copyright (C) 2009-2011 Free Software Foundation, Inc.
    4: 
    5:    This program is free software; you can redistribute it and/or modify
    6:    it under the terms of the GNU General Public License as published by
    7:    the Free Software Foundation; either version 3, or (at your option)
    8:    any later version.
    9: 
   10:    This program is distributed in the hope that it will be useful,
   11:    but WITHOUT ANY WARRANTY; without even the implied warranty of
   12:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   13:    GNU General Public License for more details.
   14: 
   15:    You should have received a copy of the GNU General Public License
   16:    along with this program; if not, write to the Free Software Foundation,
   17:    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
   18: 
   19: /* Written by Eric Blake.  */
   20: 
   21: /*
   22:  * POSIX 2008 <stddef.h> for platforms that have issues.
   23:  * <http://www.opengroup.org/susv3xbd/stddef.h.html>
   24:  */
   25: 
   26: #if __GNUC__ >= 3
   27: @PRAGMA_SYSTEM_HEADER@
   28: #endif
   29: @PRAGMA_COLUMNS@
   30: 
   31: #if defined __need_wchar_t || defined __need_size_t  \
   32:   || defined __need_ptrdiff_t || defined __need_NULL \
   33:   || defined __need_wint_t
   34: /* Special invocation convention inside gcc header files.  In
   35:    particular, gcc provides a version of <stddef.h> that blindly
   36:    redefines NULL even when __need_wint_t was defined, even though
   37:    wint_t is not normally provided by <stddef.h>.  Hence, we must
   38:    remember if special invocation has ever been used to obtain wint_t,
   39:    in which case we need to clean up NULL yet again.  */
   40: 
   41: # if !(defined _@GUARD_PREFIX@_STDDEF_H && defined _GL_STDDEF_WINT_T)
   42: #  ifdef __need_wint_t
   43: #   undef _@GUARD_PREFIX@_STDDEF_H
   44: #   define _GL_STDDEF_WINT_T
   45: #  endif
   46: #  @INCLUDE_NEXT@ @NEXT_STDDEF_H@
   47: # endif
   48: 
   49: #else
   50: /* Normal invocation convention.  */
   51: 
   52: # ifndef _@GUARD_PREFIX@_STDDEF_H
   53: 
   54: /* The include_next requires a split double-inclusion guard.  */
   55: 
   56: #  @INCLUDE_NEXT@ @NEXT_STDDEF_H@
   57: 
   58: #  ifndef _@GUARD_PREFIX@_STDDEF_H
   59: #   define _@GUARD_PREFIX@_STDDEF_H
   60: 
   61: /* On NetBSD 5.0, the definition of NULL lacks proper parentheses.  */
   62: #if @REPLACE_NULL@
   63: # undef NULL
   64: # ifdef __cplusplus
   65:    /* ISO C++ says that the macro NULL must expand to an integer constant
   66:       expression, hence '((void *) 0)' is not allowed in C++.  */
   67: #  if __GNUG__ >= 3
   68:     /* GNU C++ has a __null macro that behaves like an integer ('int' or
   69:        'long') but has the same size as a pointer.  Use that, to avoid
   70:        warnings.  */
   71: #   define NULL __null
   72: #  else
   73: #   define NULL 0L
   74: #  endif
   75: # else
   76: #  define NULL ((void *) 0)
   77: # endif
   78: #endif
   79: 
   80: /* Some platforms lack wchar_t.  */
   81: #if !@HAVE_WCHAR_T@
   82: # define wchar_t int
   83: #endif
   84: 
   85: #  endif /* _@GUARD_PREFIX@_STDDEF_H */
   86: # endif /* _@GUARD_PREFIX@_STDDEF_H */
   87: #endif /* __need_XXX */