commit 2a7d596f27b2342caf168a03c95ebf3b56e5dbbd
author Brandt Bucher <brandtbucher@gmail.com> Wed Jun 26 12:06:18 2019 -0700
committer Serhiy Storchaka <storchaka@gmail.com> Wed Jun 26 22:06:18 2019 +0300
tree 58e72304033f783f19450f082c226cefa1108671
parent 5150d327924959639215ed0a78feffc0d88258da

bpo-37417: Fix error handling in bytearray.extend. (GH-14407)

Objects/bytearrayobject.c

diff --git a/Objects/bytearrayobject.c b/Objects/bytearrayobject.c
index c684db7..1bb19a9 100644
--- a/Objects/bytearrayobject.c
+++ b/Objects/bytearrayobject.c
@@ -1698,6 +1698,10 @@
     }
     Py_DECREF(bytearray_obj);
 
+    if (PyErr_Occurred()) {
+        return NULL;
+    }
+
     Py_RETURN_NONE;
 }