From ca28e99202cb31506c071792e463afbcdb5738f4 Mon Sep 17 00:00:00 2001
From: Larry Hastings <larry@hastings.org>
Date: Thu, 24 May 2012 22:58:30 -0700
Subject: [PATCH] Issue #14889: PyBytes_FromObject(bytes) now just increfs and
 returns. Previously, if you passed in a bytes object, it would create a whole
 new object.

---
 Objects/bytesobject.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Objects/bytesobject.c b/Objects/bytesobject.c
index efe6ef87b3..14bd8e68c5 100644
--- a/Objects/bytesobject.c
+++ b/Objects/bytesobject.c
@@ -2577,6 +2577,12 @@ PyBytes_FromObject(PyObject *x)
         PyErr_BadInternalCall();
         return NULL;
     }
+
+    if (PyBytes_CheckExact(x)) {
+        Py_INCREF(x);
+        return x;
+    }
+
     /* Use the modern buffer interface */
     if (PyObject_CheckBuffer(x)) {
         Py_buffer view;
-- 
2.40.0