[Bug 881316] Re: RuntimeError: maximum recursion depth exceeded while pickling an object

[Akash Agrawall]

** Description changed:

  With mailman 3.0.0a8.
  
- I got the following traceback from a html mail with html signature+image from Outlook, 
- Oct 14 09:21:31 2011 (17579) Traceback (most recent call last):                 
-   File "/home/zope/mailman/src/mailman/core/runner.py", line 138, in _one_iteration
-     self._process_one_file(msg, msgdata)                                        
-   File "/home/zope/mailman/src/mailman/core/runner.py", line 220, in _process_one_file
-     keepqueued = self._dispose(mlist, msg, msgdata)                             
-   File "/home/zope/mailman/src/mailman/runners/incoming.py", line 64, in _dispose
-     process(mlist, msg, msgdata, mlist.start_chain)                             
-   File "/home/zope/mailman/src/mailman/core/chains.py", line 90, in process        
-     link.function(mlist, msg, msgdata)                                          
-   File "/home/zope/mailman/src/mailman/chains/hold.py", line 245, in _process   
-     nmsg.send(mlist, **dict(tomoderators=True))                                 
-   File "/home/zope/mailman/src/mailman/email/message.py", line 198, in send        
-     self._enqueue(mlist, **_kws)                                                
-   File "/home/zope/mailman/src/mailman/email/message.py", line 216, in _enqueue 
-     virginq.enqueue(self, **str_keywords)                                       
-   File "/home/zope/mailman/src/mailman/core/switchboard.py", line 133, in enqueue
-     msgsave = cPickle.dumps(_msg, protocol)                                     
+ I got the following traceback from a html mail with html signature+image from Outlook,
+ Oct 14 09:21:31 2011 (17579) Traceback (most recent call last):
+   File "/home/zope/mailman/src/mailman/core/runner.py", line 138, in _one_iteration
+     self._process_one_file(msg, msgdata)
+   File "/home/zope/mailman/src/mailman/core/runner.py", line 220, in _process_one_file
+     keepqueued = self._dispose(mlist, msg, msgdata)
+   File "/home/zope/mailman/src/mailman/runners/incoming.py", line 64, in _dispose
+     process(mlist, msg, msgdata, mlist.start_chain)
+   File "/home/zope/mailman/src/mailman/core/chains.py", line 90, in process
+     link.function(mlist, msg, msgdata)
+   File "/home/zope/mailman/src/mailman/chains/hold.py", line 245, in _process
+     nmsg.send(mlist, **dict(tomoderators=True))
+   File "/home/zope/mailman/src/mailman/email/message.py", line 198, in send
+     self._enqueue(mlist, **_kws)
+   File "/home/zope/mailman/src/mailman/email/message.py", line 216, in _enqueue
+     virginq.enqueue(self, **str_keywords)
+   File "/home/zope/mailman/src/mailman/core/switchboard.py", line 133, in enqueue
+     msgsave = cPickle.dumps(_msg, protocol)
  RuntimeError: maximum recursion depth exceeded while pickling an object
  
  It's really an obscure issue for me.
  I resolved it by adding
- sys.setrecursionlimit(10000)                                                    
- in src/mailman/core/switchboard.py                                            
- before                                                                          
- msgsave = cPickle.dumps(_msg, protocol)                                         
+ sys.setrecursionlimit(10000)
+ in src/mailman/core/switchboard.py
+ before
+ msgsave = cPickle.dumps(_msg, protocol)
  line 134
  and doing
  bin/mailman unshunt
  fixed the issue.
  By default sys.getrecursionlimit() returns 1000.
  
  If you want to have a test email to reproduce, I can ask my customer to
  send an email to a test mailing-list.

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https://bugs.launchpad.net/bugs/881316

Title:
  RuntimeError: maximum recursion depth exceeded while pickling an
  object

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