Index: Objects/stringobject.c
===================================================================
RCS file: /projects/cvsroot/python/dist/src/Objects/stringobject.c,v
retrieving revision 2.47
diff -c -r2.47 stringobject.c
*** stringobject.c	1998/04/10 22:16:39	2.47
--- stringobject.c	1998/06/09 15:01:53
***************
*** 900,905 ****
--- 900,910 ----
  				temp = PyObject_Str(v);
  				if (temp == NULL)
  					goto error;
+ 				if (!PyString_Check(temp)) {
+ 					PyErr_SetString(PyExc_TypeError,
+ 					  "%s argument has non-string str()");
+ 					goto error;
+ 				}
  				buf = PyString_AsString(temp);
  				len = PyString_Size(temp);
  				if (prec >= 0 && len > prec)