Benjamin Peterson's patch to fix bug 3661, sys.call_tracing segfaults.
diff --git a/Python/sysmodule.c b/Python/sysmodule.c
index 10a8761..952f7e5 100644
--- a/Python/sysmodule.c
+++ b/Python/sysmodule.c
@@ -783,7 +783,7 @@
sys_call_tracing(PyObject *self, PyObject *args)
{
PyObject *func, *funcargs;
- if (!PyArg_UnpackTuple(args, "call_tracing", 2, 2, &func, &funcargs))
+ if (!PyArg_ParseTuple(args, "OO!:call_tracing", &func, &PyTuple_Type, &funcargs))
return NULL;
return _PyEval_CallTracing(func, funcargs);
}