text: /* A substitute for POSIX 2008 <stddef.h>, for platforms that have issues.
  
     Copyright (C) 2009-2017 Free Software Foundation, Inc.
  
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 3, or (at your option)
     any later version.
  
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
  
     You should have received a copy of the GNU General Public License
     along with this program; if not, see <http://www.gnu.org/licenses/>.  */
  
  /* Written by Eric Blake.  */
  
  /*
   * POSIX 2008 <stddef.h> for platforms that have issues.
   * <http://www.opengroup.org/susv3xbd/stddef.h.html>
   */
  
  #if __GNUC__ >= 3
  @PRAGMA_SYSTEM_HEADER@
  #endif
  @PRAGMA_COLUMNS@
  
  #if defined __need_wchar_t || defined __need_size_t  \
    || defined __need_ptrdiff_t || defined __need_NULL \
    || defined __need_wint_t
  /* Special invocation convention inside gcc header files.  In
     particular, gcc provides a version of <stddef.h> that blindly
     redefines NULL even when __need_wint_t was defined, even though
     wint_t is not normally provided by <stddef.h>.  Hence, we must
     remember if special invocation has ever been used to obtain wint_t,
     in which case we need to clean up NULL yet again.  */
  
  # if !(defined _@GUARD_PREFIX@_STDDEF_H && defined _GL_STDDEF_WINT_T)
  #  ifdef __need_wint_t
  #   define _GL_STDDEF_WINT_T
  #  endif
  #  @INCLUDE_NEXT@ @NEXT_STDDEF_H@
  # endif
  
  #else
  /* Normal invocation convention.  */
  
  # ifndef _@GUARD_PREFIX@_STDDEF_H
  
  /* The include_next requires a split double-inclusion guard.  */
  
  #  @INCLUDE_NEXT@ @NEXT_STDDEF_H@
  
  /* On NetBSD 5.0, the definition of NULL lacks proper parentheses.  */
  #  if (@REPLACE_NULL@ \
         && (!defined _@GUARD_PREFIX@_STDDEF_H || defined _GL_STDDEF_WINT_T))
  #   undef NULL
  #   ifdef __cplusplus
     /* ISO C++ says that the macro NULL must expand to an integer constant
        expression, hence '((void *) 0)' is not allowed in C++.  */
  #    if __GNUG__ >= 3
      /* GNU C++ has a __null macro that behaves like an integer ('int' or
         'long') but has the same size as a pointer.  Use that, to avoid
         warnings.  */
  #     define NULL __null
  #    else
  #     define NULL 0L
  #    endif
  #   else
  #    define NULL ((void *) 0)
  #   endif
  #  endif
  
  #  ifndef _@GUARD_PREFIX@_STDDEF_H
  #   define _@GUARD_PREFIX@_STDDEF_H
  
  /* Some platforms lack wchar_t.  */
  #if !@HAVE_WCHAR_T@
  # define wchar_t int
  #endif
  
  /* Some platforms lack max_align_t.  The check for _GCC_MAX_ALIGN_T is
     a hack in case the configure-time test was done with g++ even though
     we are currently compiling with gcc.  */
  #if ! (@HAVE_MAX_ALIGN_T@ || defined _GCC_MAX_ALIGN_T)
  /* On the x86, the maximum storage alignment of double, long, etc. is 4,
     but GCC's C11 ABI for x86 says that max_align_t has an alignment of 8,
     and the C11 standard allows this.  Work around this problem by
     using __alignof__ (which returns 8 for double) rather than _Alignof
     (which returns 4), and align each union member accordingly.  */
  # ifdef __GNUC__
  #  define _GL_STDDEF_ALIGNAS(type) \
       __attribute__ ((__aligned__ (__alignof__ (type))))
  # else
  #  define _GL_STDDEF_ALIGNAS(type) /* */
  # endif
  typedef union
  {
    char *__p _GL_STDDEF_ALIGNAS (char *);
    double __d _GL_STDDEF_ALIGNAS (double);
    long double __ld _GL_STDDEF_ALIGNAS (long double);
    long int __i _GL_STDDEF_ALIGNAS (long int);
  } max_align_t;
  #endif
  
  #  endif /* _@GUARD_PREFIX@_STDDEF_H */
  # endif /* _@GUARD_PREFIX@_STDDEF_H */
  #endif /* __need_XXX */
  