out-of-memory while packing causes AssertionError in groupcompress _populate_first_index

[Vikash Madhow]

Bzr pack crashes with the following error:

F:\bazaar\coresys\main>bzr pack
bzr: ERROR: exceptions.AssertionError:

Traceback (most recent call last):
  File "bzrlib\commands.pyo", line 923, in exception_to_return_code
  File "bzrlib\commands.pyo", line 1123, in run_bzr
  File "bzrlib\commands.pyo", line 691, in run_argv_aliases
  File "bzrlib\commands.pyo", line 710, in run
  File "bzrlib\cleanup.pyo", line 135, in run_simple
  File "bzrlib\cleanup.pyo", line 165, in _do_with_cleanups
  File "bzrlib\builtins.pyo", line 4558, in run
  File "bzrlib\decorators.pyo", line 194, in write_locked
  File "bzrlib\repofmt\pack_repo.pyo", line 2421, in pack
  File "bzrlib\repofmt\pack_repo.pyo", line 1578, in pack
  File "bzrlib\repofmt\pack_repo.pyo", line 1599, in _try_pack_operations
  File "bzrlib\repofmt\groupcompress_repo.pyo", line 800, in _execute_pack_operations
  File "bzrlib\repofmt\pack_repo.pyo", line 745, in pack
  File "bzrlib\repofmt\groupcompress_repo.pyo", line 480, in _create_pack_from_packs
  File "bzrlib\repofmt\groupcompress_repo.pyo", line 463, in _copy_text_texts
  File "bzrlib\repofmt\groupcompress_repo.pyo", line 401, in _copy_stream
  File "bzrlib\groupcompress.pyo", line 1751, in _insert_record_stream
  File "bzrlib\groupcompress.pyo", line 824, in compress
  File "bzrlib\groupcompress.pyo", line 986, in _compress
  File "_groupcompress_pyx.pyx", line 246, in bzrlib._groupcompress_pyx.DeltaIndex.make_delta (bzrlib\_groupcompress_pyx.c:2201)
  File "_groupcompress_pyx.pyx", line 224, in bzrlib._groupcompress_pyx.DeltaIndex._populate_first_index (bzrlib\_groupcompress_pyx.c:2005)
AssertionError

bzr 2.3.0 on python 2.6.6 (Windows-Vista-6.0.6002-SP2)
arguments: ['bzr', 'pack']
encoding: 'cp1252', fsenc: 'mbcs', lang: None
plugins:
  bzrtools C:\Program Files (x86)\Bazaar\plugins\bzrtools [2.3.1]
  colo C:\Program Files (x86)\Bazaar\plugins\colo [0.2.1]
  explorer C:\Program Files (x86)\Bazaar\plugins\explorer [1.1.2]
  fastimport C:\Program Files (x86)\Bazaar\plugins\fastimport [0.10.0dev]
  launchpad C:\Program Files (x86)\Bazaar\plugins\launchpad [2.3.0]
  loom C:\Program Files (x86)\Bazaar\plugins\loom [2.2.1dev]
  netrc_credential_store C:\Program Files (x86)\Bazaar\plugins\netrc_credential_store [2.3.0]
  news_merge C:\Program Files (x86)\Bazaar\plugins\news_merge [2.3.0]
  pipeline C:\Program Files (x86)\Bazaar\plugins\pipeline [1.1.0]
  qbzr C:\Program Files (x86)\Bazaar\plugins\qbzr [0.20.0]
  rewrite C:\Program Files (x86)\Bazaar\plugins\rewrite [0.6.2dev]
  svn C:\Program Files (x86)\Bazaar\plugins\svn [1.0.5dev]
  upload C:\Program Files (x86)\Bazaar\plugins\upload [1.0.0]
  xmloutput C:\Program Files (x86)\Bazaar\plugins\xmloutput [0.8.7.dev]

*** 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.

Bazaar version used: 2.3.0.0
OS: Windows Vista professional 64-bit
Memory available: 4GB