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Running test_httpservers on a 64-bit build of Python 2.7 trunk on OS X
10.5: (I added a print "nobody=", nobody)
test_authorization (__main__.CGIHTTPServerTestCase) ... nobody= 4294967294
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 55322)
Traceback (most recent call last):
 File "/Users/greg/sandbox/python/trunk/Lib/CGIHTTPServer.py", line
251, in run_cgi
 os.setuid(nobody)
OverflowError: signed integer is greater than maximum

Fixed in r71299 trunk. Needs backporting to release26-maint and
release30-maint. (I'm waiting for buildbot results before I do that)

merged into release26-maint. release30-maint still needed.

Closes duplicate Issue3586?

release30-maint r72245 (its already been merged into py3k).

Another potential bug discovered in posixmodule.c in the function
posix_lchown:
posix_lchown(PyObject *self, PyObject *args)
{
 ...
 	int uid, gid;
 ...
 	if (!PyArg_ParseTuple(args, "etii:lchown",
 	 Py_FileSystemDefaultEncoding, &path,
 	 &uid, &gid))
 ...
}
uid and gid could also cause over flow. Patch attached.
Hope some one can comment on the patch, thanks a lot!

@boya: It's maybe better to open a new issue for posix_lchown.

Created issue 6879 following Victor's suggestion.

Sorry, typo.
Created issue 6873 following Victor's suggestion.

I think this can be closed, now that there is another issue for posix_lchown.