sysdeps/generic/errno-loc.c

   1 /* MT support function to get address of `errno' variable, non-threaded
   2    version.
   3    Copyright (C) 1996, 1998, 2002 Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #include <errno.h>
  22 #include <tls.h>
  23
  24 #if !(USE_TLS && HAVE___THREAD)
  25 #undef errno
  26 extern int errno;
  27 #endif
  28
  29 int *
  30 weak_const_function
  31 __errno_location (void)
  32 {
  33   return &errno;
  34 }