Exception when trying complex query while logged in

[miki@…]

I try the following query:

http://myserver/trac/query?status=new&status=assigned&status=reopened&group=milestone&component=component1&order=priority

If I'm not logged in, everything works fine, however if I'm logged in, the following exception is raised:

Oops…
Trac detected an internal error:

If you think this really should work and you can reproduce it, you should consider reporting this problem to the Trac team.

Go to http://trac.edgewall.org/ and create a new ticket where you describe the problem, how to reproduce it. Don't forget to include the Python traceback found below.

TracGuide — The Trac User and Administration Guide
Python Traceback

Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/trac/web/main.py", line 387, in dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib/python2.4/site-packages/trac/web/main.py", line 237, in dispatch
    resp = chosen_handler.process_request(req)
  File "/usr/lib/python2.4/site-packages/trac/ticket/query.py", line 443, in process_request
    self.display_html(req, query)
  File "/usr/lib/python2.4/site-packages/trac/ticket/query.py", line 608, in display_html
    req.hdf['query.num_matches_group'] = num_matches_group
  File "/usr/lib/python2.4/site-packages/trac/web/clearsilver.py", line 197, in __setitem__
    self.set_value(name, value, True)
  File "/usr/lib/python2.4/site-packages/trac/web/clearsilver.py", line 245, in set_value
    add_value(name, value)
  File "/usr/lib/python2.4/site-packages/trac/web/clearsilver.py", line 237, in add_value
    add_value('%s.%s' % (prefix, k), value[k])
  File "/usr/lib/python2.4/site-packages/trac/web/clearsilver.py", line 244, in add_value
    set_str(prefix, value)
  File "/usr/lib/python2.4/site-packages/trac/web/clearsilver.py", line 215, in set_str
    self.hdf.setValue(prefix.encode('utf-8'), str(value))
Error: Traceback (innermost last):
  File "neo_hdf.c", line 806, in hdf_set_value()
  File "neo_hdf.c", line 796, in _set_value()
AssertError: Unable to set Empty component query.num_matches_group.

[Matthew Good]

This is a duplicate of #4218. It has been fixed for the upcoming 0.10.4 release.