Fix bug

[ 1232517 ] OverflowError in time.utime() causes strange traceback

A needed error check was missing.

(Actually, this error check may only have become necessary in fairly
recent Python, not sure).

Backport candidate.

Misc/NEWS

@@ -12,6 +12,9 @@ What's New in Python 2.5 alpha 1?
 Core and builtins
 -----------------
 
+- SF bug #1232517: An overflow error was not detected properly when
+  attempting to convert a large float to an int in os.utime().
+
 - SF bug #1224347: hex longs now print with lowercase letters just
   like their int counterparts.
 

Modules/posixmodule.c

@@ -1991,6 +1991,8 @@ extract_time(PyObject *t, long* sec, long* usec)
 			return -1;
 		intval = PyInt_AsLong(intobj);
 		Py_DECREF(intobj);
+		if (intval == -1 && PyErr_Occurred())
+			return -1;
 		*sec = intval;
 		*usec = (long)((tval - intval) * 1e6); /* can't exceed 1000000 */
 		if (*usec < 0)