Crash when global subcription change causes collision

[Pasco-users]

I ran into this bug in MailMan version 2.1.2 today:

If you change your e-mail address "globally" (on all
lists to which you subscribe), and one of those lists
(other than the one whose options page you're working
from) already has a subscription under your new address
(as well as your old address), then MailMan will crash
(and display an exception traceback).

For example, I was working from the web-team page
http://domain.net/mailman/options/listname
as I tried to change my address globally. This would
affect about ten lists to which my old address
subscribed, including a list called "Team" among
others. But "Team" already had my new address among
its subscribers, so it could not accept another one.
Rather than giving a graceful error message when it
discovered this, MailMan just crashed.

I didn't capture the exception traceback, but it should
be easy to reproduce.

     - Rich

[http://sourceforge.net/tracker/index.php?func=detail&aid=820322&group_id=103&atid=100103]

[Simonha-users (simonha-users)]

I have experience the same problem, here is our traceback:

Traceback:

Traceback (most recent call last):
  File "/usr/local/mailman-2.1.2/scripts/driver", line 87, in
run_main
    main()
  File "/usr/local/mailman-2.1.2/Mailman/Cgi/confirm.py", line
131, in main
    addrchange_confirm(mlist, doc, cookie)
  File "/usr/local/mailman-2.1.2/Mailman/Cgi/confirm.py", line
492, in addrchange_confirm
    op, oldaddr, newaddr = mlist.ProcessConfirmation(cookie)
  File "/usr/local/mailman-2.1.2/Mailman/MailList.py", line
1113,
in ProcessConfirmation
    self.ApprovedChangeMemberAddress(oldaddr, newaddr,
globally)
  File "/usr/local/mailman-2.1.2/Mailman/MailList.py", line
1048,
in ApprovedChangeMemberAddress
    mlist.changeMemberAddress(oldaddr, newaddr)
  File "/usr/local/mailman-2.1.2/Mailman/OldStyleMemberships.
py", line 251, in changeMemberAddress
    password=xxxxxxxx, language=lang)
  File "/usr/local/mailman-2.1.2/Mailman/OldStyleMemberships.
py", line 175, in addNewMember
    raise Errors.MMAlreadyAMember, member
MMAlreadyAMember: <email address hidden>

[Barry Warsaw (barry)]

This is a duplicate, and the bug has been fixed for Mailman
2.1.4