--- Objects/tupleobject.c.orig 2006-08-12 18:03:09.000000000 +0100 +++ Objects/tupleobject.c 2008-08-30 10:16:13.000000000 +0100 @@ -60,11 +60,12 @@ Py_ssize_t nbytes = size * sizeof(PyObject *); /* Check for overflow */ if (nbytes / sizeof(PyObject *) != (size_t)size || - (nbytes += sizeof(PyTupleObject) - sizeof(PyObject *)) - <= 0) + (nbytes > PY_SSIZE_T_MAX - sizeof(PyTupleObject) - sizeof(PyObject *))) { return PyErr_NoMemory(); } + nbytes += sizeof(PyTupleObject) - sizeof(PyObject *); + op = PyObject_GC_NewVar(PyTupleObject, &PyTuple_Type, size); if (op == NULL) return NULL;