+++ /dev/null
-# eoverflow.m4 serial 2
-dnl Copyright (C) 2004, 2006 Free Software Foundation, Inc.
-dnl This file is free software; the Free Software Foundation
-dnl gives unlimited permission to copy and/or distribute it,
-dnl with or without modifications, as long as this notice is preserved.
-
-dnl From Bruno Haible.
-
-# The EOVERFLOW errno value ought to be defined in <errno.h>, according to
-# POSIX. But some systems (like AIX 3) don't define it, and some systems
-# (like OSF/1) define it when _XOPEN_SOURCE_EXTENDED is defined.
-
-# Define EOVERFLOW as a C macro and as a substituted macro in such a way that
-# 1. on all systems, after inclusion of <errno.h>, EOVERFLOW is usable,
-# 2. on systems where EOVERFLOW is defined elsewhere, we use the same numeric
-# value.
-
-AC_DEFUN([gl_EOVERFLOW],
-[
- AC_REQUIRE([AC_PROG_CC])dnl
-
- AC_CACHE_CHECK([for EOVERFLOW], ac_cv_decl_EOVERFLOW, [
- AC_EGREP_CPP(yes,[
-#include <errno.h>
-#ifdef EOVERFLOW
-yes
-#endif
- ], have_eoverflow=1)
- if test -n "$have_eoverflow"; then
- dnl EOVERFLOW exists in <errno.h>. Don't need to define EOVERFLOW ourselves.
- ac_cv_decl_EOVERFLOW=yes
- else
- AC_EGREP_CPP(yes,[
-#define _XOPEN_SOURCE_EXTENDED 1
-#include <errno.h>
-#ifdef EOVERFLOW
-yes
-#endif
- ], have_eoverflow=1)
- if test -n "$have_eoverflow"; then
- dnl EOVERFLOW exists but is hidden.
- dnl Define it to the same value.
- AC_COMPUTE_INT([ac_cv_decl_EOVERFLOW], [EOVERFLOW], [
-#define _XOPEN_SOURCE_EXTENDED 1
-#include <errno.h>
-/* The following two lines are a workaround against an autoconf-2.52 bug. */
-#include <stdio.h>
-#include <stdlib.h>
-])
- else
- dnl EOVERFLOW isn't defined by the system. Define EOVERFLOW ourselves, but
- dnl don't define it as EINVAL, because snprintf() callers want to
- dnl distinguish EINVAL and EOVERFLOW.
- ac_cv_decl_EOVERFLOW=E2BIG
- fi
- fi
- ])
- if test "$ac_cv_decl_EOVERFLOW" != yes; then
- AC_DEFINE_UNQUOTED([EOVERFLOW], [$ac_cv_decl_EOVERFLOW],
- [Define as good substitute value for EOVERFLOW.])
- EOVERFLOW="$ac_cv_decl_EOVERFLOW"
- AC_SUBST(EOVERFLOW)
- fi
-])
-
-dnl Autoconf >= 2.61 has AC_COMPUTE_INT built-in.
-dnl Remove this when we can assume autoconf >= 2.61.
-m4_ifdef([AC_COMPUTE_INT], [], [
- AC_DEFUN([AC_COMPUTE_INT], [_AC_COMPUTE_INT([$2],[$1],[$3],[$4])])
-])
+++ /dev/null
-/* Test of EOVERFLOW macro.
- Copyright (C) 2008 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 of the License, 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/>. */
-
-#include <config.h>
-
-#include <errno.h>
-
-/* Check that it can be used as an initializer outside of a function. */
-static int err = EOVERFLOW;
-
-int
-main ()
-{
- /* snprintf() callers want to distinguish EINVAL and EOVERFLOW. */
- if (err == EINVAL)
- return 1;
-
- return 0;
-}