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[glibc/history.git] / csu / errno-loc.c
blob633590f4f9486bcc91513c8be8cfef55799cc0af
1 /* MT support function to get address of `errno' variable, non-threaded
2 version.
3 Copyright (C) 1996, 1998, 2002, 2004 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
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.
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.
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. */
21 #include <errno.h>
22 #include <tls.h>
24 #if ! USE___THREAD && !RTLD_PRIVATE_ERRNO
25 #undef errno
26 extern int errno;
27 #endif
29 int *
30 #if ! USE___THREAD
31 weak_const_function
32 #endif
33 __errno_location (void)
35 return &errno;
37 libc_hidden_def (__errno_location)