From a10d426bab66a4e1f20d5e1b9aee3dbb435cf309 Mon Sep 17 00:00:00 2001
From: stratakis <cstratak@redhat.com>
Date: Mon, 18 Mar 2019 18:59:20 +0100
Subject: [PATCH] bpo-36292:  Mark unreachable code as such in long bitwise ops
 (GH-12333)

---
 Objects/longobject.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/Objects/longobject.c b/Objects/longobject.c
index 1e3445c64a6..da697a784fa 100644
--- a/Objects/longobject.c
+++ b/Objects/longobject.c
@@ -4637,8 +4637,7 @@ long_bitwise(PyLongObject *a,
         size_z = negb ? size_b : size_a;
         break;
     default:
-        PyErr_BadArgument();
-        return NULL;
+        Py_UNREACHABLE();
     }
 
     /* We allow an extra digit if z is negative, to make sure that
@@ -4665,8 +4664,7 @@ long_bitwise(PyLongObject *a,
             z->ob_digit[i] = a->ob_digit[i] ^ b->ob_digit[i];
         break;
     default:
-        PyErr_BadArgument();
-        return NULL;
+        Py_UNREACHABLE();
     }
 
     /* Copy any remaining digits of a, inverting if necessary. */