exceptions.IndexError: pop from empty list

[Georg Sendt]

$ bzr qdiff objc-compat/objc/
bzr: ERROR: exceptions.IndexError: pop from empty list

Traceback (most recent call last):
  File "C:/Programme/Bazaar/plugins\qbzr\lib\trace.py", line 291, in reports_exception_decorate
  File "C:/Programme/Bazaar/plugins\qbzr\lib\diffwindow.py", line 235, in initial_load
  File "C:/Programme/Bazaar/plugins\qbzr\lib\diffwindow.py", line 401, in load_diff
  File "C:/Programme/Bazaar/plugins\qbzr\lib\diffview.py", line 434, in append_diff
  File "C:/Programme/Bazaar/plugins\qbzr\lib\diffview.py", line 383, in insertIxsWithChangesHighlighted
IndexError: pop from empty list

bzr 2.1.2 on python 2.5.4 (Windows-XP-5.1.2600-SP3)
arguments: ['c:\\Programme\\Bazaar\\bzr.exe', 'qdiff', 'objc-compat/objc/']
encoding: 'cp1252', fsenc: 'mbcs', lang: None
plugins:
  bzrtools C:\Programme\Bazaar\plugins\bzrtools [2.1.0]
  explorer C:\Programme\Bazaar\plugins\explorer [1.0.0rc1]
  launchpad C:\Programme\Bazaar\plugins\launchpad [2.1.2]
  netrc_credential_store C:\Programme\Bazaar\plugins\netrc_credential_store [2.1.2]
  news_merge C:\Programme\Bazaar\plugins\news_merge [2.1.2]
  qbzr C:\Programme\Bazaar\plugins\qbzr [0.18.6]
  rebase C:\Programme\Bazaar\plugins\rebase [0.5.5]
  svn C:\Programme\Bazaar\plugins\svn [1.0.2]
  upload C:\Programme\Bazaar\plugins\upload [1.0.0dev]
  xmloutput C:\Programme\Bazaar\plugins\xmloutput [0.8.6]

*** Bazaar has encountered an internal error. This probably indicates a
    bug in Bazaar. You can help us fix it by filing a bug report at
        https://bugs.launchpad.net/bzr/+filebug
    including this traceback and a description of the problem.

[Chris_Z (chris-ustation)]

I see the same:

bzr: ERROR: exceptions.IndexError: pop from empty list

Traceback (most recent call last):
  File "C:/Program Files/Bazaar/plugins\qbzr\lib\trace.py", line 300, in reports_exception_decorate
  File "C:/Program Files/Bazaar/plugins\qbzr\lib\diffwindow.py", line 235, in initial_load
  File "bzrlib\cleanup.pyo", line 131, in run
  File "bzrlib\cleanup.pyo", line 165, in _do_with_cleanups
  File "C:/Program Files/Bazaar/plugins\qbzr\lib\diffwindow.py", line 248, in _initial_load
  File "C:/Program Files/Bazaar/plugins\qbzr\lib\diffwindow.py", line 404, in load_diff
  File "C:/Program Files/Bazaar/plugins\qbzr\lib\diffview.py", line 435, in append_diff
  File "C:/Program Files/Bazaar/plugins\qbzr\lib\diffview.py", line 384, in insertIxsWithChangesHighlighted
IndexError: pop from empty list

bzr 2.2b4 on python 2.6.4 (win32)
arguments: ['C:\\Program Files\\Bazaar\\bzr.exe', 'qlog']
encoding: 'cp1252', fsenc: 'mbcs', lang: None
plugins:
  bzrtools C:\Program Files\Bazaar\plugins\bzrtools [2.2.0]
  colo C:\Program Files\Bazaar\plugins\colo [0.1.0]
  explorer C:\Program Files\Bazaar\plugins\explorer [1.0.2]
  extmerge C:\Program Files\Bazaar\plugins\extmerge [unknown]
  fastimport C:\Program Files\Bazaar\plugins\fastimport [0.9.0dev]
  gtk C:\Program Files\Bazaar\plugins\gtk [0.99.0dev1]
  launchpad C:\Program Files\Bazaar\plugins\launchpad [2.2b4]
  loom C:\Program Files\Bazaar\plugins\loom [2.2.1dev]
  netrc_credential_store C:\Program Files\Bazaar\plugins\netrc_credential_store [2.2b4]
  news_merge C:\Program Files\Bazaar\plugins\news_merge [2.2b4]
  pipeline C:\Program Files\Bazaar\plugins\pipeline [unknown]
  qbzr C:\Program Files\Bazaar\plugins\qbzr [0.19.0]
  rewrite C:\Program Files\Bazaar\plugins\rewrite [0.6.0]
  svn C:\Program Files\Bazaar\plugins\svn [1.0.3dev]
  upload C:\Program Files\Bazaar\plugins\upload [1.0.0dev]
  x_bit C:\Program Files\Bazaar\plugins\x_bit [1.0.0]
  xmloutput C:\Program Files\Bazaar\plugins\xmloutput [0.8.6]

[James Adams (inklink28)]

I'm getting the same thing specifically when trying to run qdiff dialog.

bzr: ERROR: exceptions.IndexError: pop from empty list

Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/qbzr/lib/trace.py", line 300, in reports_exception_decorate
    return f(*args, **kargs)
  File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/qbzr/lib/diffwindow.py", line 235, in initial_load
    op.run()
  File "/usr/lib/python2.6/dist-packages/bzrlib/cleanup.py", line 118, in run
    self.cleanups, self.func, self, *args, **kwargs)
  File "/usr/lib/python2.6/dist-packages/bzrlib/cleanup.py", line 156, in _do_with_cleanups
    result = func(*args, **kwargs)
  File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/qbzr/lib/diffwindow.py", line 248, in _initial_load
    self.load_diff()
  File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/qbzr/lib/diffwindow.py", line 404, in load_diff
    data, properties_changed)
  File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/qbzr/lib/diffview.py", line 435, in append_diff
    insertIxsWithChangesHighlighted(ixs)
  File "/usr/lib/python2.6/dist-packages/bzrlib/plugins/qbzr/lib/diffview.py", line 384, in insertIxsWithChangesHighlighted
    tag, n = g.pop(0)
IndexError: pop from empty list

bzr 2.1.1 on python 2.6.2 (linux2)
arguments: ['/usr/bin/bzr', 'qlog']
encoding: 'UTF-8', fsenc: 'UTF-8', lang: 'en_US.UTF-8'
plugins:
  bzrtools /usr/lib/python2.6/dist-packages/bzrlib/plugins/bzrtools [2.1.0]
  launchpad /usr/lib/python2.6/dist-packages/bzrlib/plugins/launchpad [2.1.1]
  netrc_credential_store /usr/lib/python2.6/dist-packages/bzrlib/plugins/netrc_credential_store [2.1.1]
  news_merge /usr/lib/python2.6/dist-packages/bzrlib/plugins/news_merge [2.1.1]
  qbzr /usr/lib/python2.6/dist-packages/bzrlib/plugins/qbzr [0.19.0]

The commit in question went particularly nasty it picked up a lot of duplicate data along with the changes. Maybe it was a problem with the commit itself. *note the diffing does work in loggerhead.
http://bazaar.launchpad.net/~inklink28/mfaf/trunk/revision/123

I run two different machines here's their version data
Bazaar (bzr) 2.1.1
  Python interpreter: /usr/bin/python 2.6.5
  Python standard library: /usr/lib/python2.6
  Platform: Linux-2.6.32-21-generic-i686-with-Ubuntu-10.04-lucid
  bzrlib: /usr/lib/python2.6/dist-packages/bzrlib
  Bazaar configuration: /home/ubuntu/.bazaar
  Bazaar log file: /home/ubuntu/.bzr.log

Bazaar (bzr) 2.1.1
  Python interpreter: /usr/bin/python 2.6.2
  Python standard library: /usr/lib/python2.6
  Platform: Linux-2.6.28-19-generic-i686-with-Ubuntu-9.04-jaunty
  bzrlib: /usr/lib/python2.6/dist-packages/bzrlib
  Bazaar configuration: /home/james/.bazaar
  Bazaar log file: /home/james/.bzr.log