From 1eff316a2ec9da2eea7255d358ca91eab89d9426 Mon Sep 17 00:00:00 2001
From: Ilya Etingof <etingof@gmail.com>
Date: Sun, 23 Jul 2017 13:47:47 +0200
Subject: backward compatible OctetString specialization

---
 pysnmp/proto/rfc1902.py | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

(limited to 'pysnmp/proto')

diff --git a/pysnmp/proto/rfc1902.py b/pysnmp/proto/rfc1902.py
index 75ecda9f..6c368e8b 100644
--- a/pysnmp/proto/rfc1902.py
+++ b/pysnmp/proto/rfc1902.py
@@ -612,10 +612,26 @@ class Bits(OctetString):
     namedValues = namedval.NamedValues()
 
     def __init__(self, *args, **kwargs):
-        if 'namedValues' not in kwargs:
-            kwargs['namedValues'] = self.namedValues
+        try:
+            self.namedValues = kwargs.pop('namedValues')
+
+        except KeyError:
+            pass
+
         OctetString.__init__(self, *args, **kwargs)
 
+    def clone(self, *args, **kwargs):
+        namedValues = kwargs.pop('namedValues', self.namedValues)
+        clone = OctetString.clone(self, *args, **kwargs)
+        clone.namedValues = namedValues
+        return clone
+
+    def subtype(self, *args, **kwargs):
+        namedValues = kwargs.pop('namedValues', self.namedValues)
+        clone = OctetString.subtype(self, *args, **kwargs)
+        clone.namedValues = namedValues
+        return clone
+
     def prettyIn(self, bits):
         if not isinstance(bits, (tuple, list)):
             return OctetString.prettyIn(self, bits)  # raw bitstring
-- 
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