1 files changed, 6 insertions, 1 deletions
diff --git a/Python/generated_cases.c.h b/Python/generated_cases.c.h
index 37ffb56..6ac622b 100644
--- a/Python/generated_cases.c.h
+++ b/Python/generated_cases.c.h
@@ -3315,7 +3315,12 @@
             assert(val && PyExceptionInstance_Check(val));
             exc = PyExceptionInstance_Class(val);
             tb = PyException_GetTraceback(val);
-            Py_XDECREF(tb);
+            if (tb == NULL) {
+                tb = Py_None;
+            }
+            else {
+                Py_DECREF(tb);
+            }
             assert(PyLong_Check(lasti));
             (void)lasti; // Shut up compiler warning if asserts are off
             PyObject *stack[4] = {NULL, exc, val, tb};