-# serial 5
+# serial 7
# Determine whether getcwd aborts when the length of the working directory
# name is unusually large. Any length between 4k and 16k trigger the bug
# when using glibc-2.4.90-9 or older.
-# Copyright (C) 2006, 2009-2011 Free Software Foundation, Inc.
+# Copyright (C) 2006, 2009-2012 Free Software Foundation, Inc.
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
[
AC_CHECK_DECLS_ONCE([getcwd])
AC_CHECK_HEADERS_ONCE([unistd.h])
+ AC_REQUIRE([gl_PATHMAX_SNIPPET_PREREQ])
AC_CHECK_FUNCS([getpagesize])
AC_CACHE_CHECK([whether getcwd aborts when 4k < cwd_length < 16k],
gl_cv_func_getcwd_abort_bug,
#else /* on Windows with MSVC */
# include <direct.h>
#endif
-#include <limits.h>
#include <string.h>
#include <sys/stat.h>
+]gl_PATHMAX_SNIPPET[
+
/* Don't get link errors because mkdir is redefined to rpl_mkdir. */
#undef mkdir
results in a failed assertion. */
cwd = getcwd (NULL, 0);
if (cwd == NULL)
- fail = 4; /* getcwd failed. This is ok, and expected. */
+ fail = 4; /* getcwd failed: it refuses to return a string longer
+ than PATH_MAX. */
free (cwd);
/* Call rmdir first, in case the above chdir failed. */
}
]])],
[gl_cv_func_getcwd_abort_bug=no],
- dnl A "regular" nonzero return does not indicate this bug.
- dnl An abort will provoke an exit code of something like 134 (128 + 6).
- [test $? -gt 128 \
- && gl_cv_func_getcwd_abort_bug=yes \
- || gl_cv_func_getcwd_abort_bug=no],
+ [dnl An abort will provoke an exit code of something like 134 (128 + 6).
+ dnl An exit code of 4 can also occur (in OpenBSD 4.9, NetBSD 5.1 for
+ dnl example): getcwd (NULL, 0) fails rather than returning a string
+ dnl longer than PATH_MAX. This may be POSIX compliant (in some
+ dnl interpretations of POSIX). But gnulib's getcwd module wants to
+ dnl provide a non-NULL value in this case.
+ ret=$?
+ if test $ret -ge 128 || test $ret = 4; then
+ gl_cv_func_getcwd_abort_bug=yes
+ else
+ gl_cv_func_getcwd_abort_bug=no
+ fi],
[gl_cv_func_getcwd_abort_bug=yes])
])
AS_IF([test $gl_cv_func_getcwd_abort_bug = yes], [$1], [$2])