- 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],