-# fchdir.m4 serial 10
+# fchdir.m4 serial 11
dnl Copyright (C) 2006-2009 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
AC_CACHE_CHECK([whether open can visit directories],
[gl_cv_func_open_directory_works],
[AC_RUN_IFELSE([AC_LANG_PROGRAM([[#include <fcntl.h>
-]], [return open(".", O_RDONLY);])],
+]], [return open(".", O_RDONLY) < 0;])],
[gl_cv_func_open_directory_works=yes],
[gl_cv_func_open_directory_works=no],
[gl_cv_func_open_directory_works="guessing no"])])