AssertionError on assert size == part.size

[Kasper Dupont]

When trying to use guppy to print information about heap usage in python, it raises an exception as it is analysing the structure of the heap.

$ python
Python 2.7.3 (default, Aug 1 2012, 05:16:07)
[GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from guppy import hpy
>>> h = hpy()
>>> print h.heap()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/pymodules/python2.7/guppy/heapy/UniSet.py", line 348, in __str__
    return self.fam.c_str(self)
  File "/usr/lib/pymodules/python2.7/guppy/heapy/UniSet.py", line 1616, in c_str
    a.fam.get_partition(a).ppob(ob)
  File "/usr/lib/pymodules/python2.7/guppy/heapy/UniSet.py", line 1704, in get_partition
    p = a.fam.Part.partition(a, a.er)
  File "/usr/lib/pymodules/python2.7/guppy/heapy/Part.py", line 774, in partition
    return SetPartition(self, set, er)
  File "/usr/lib/pymodules/python2.7/guppy/heapy/Part.py", line 705, in __init__
    assert size == part.size
AssertionError
>>>

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: python-guppy 0.1.9-2ubuntu3
ProcVersionSignature: Ubuntu 3.2.0-48.74-generic 3.2.46
Uname: Linux 3.2.0-48-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu17.3
Architecture: i386
Date: Thu Jun 20 08:16:53 2013
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: guppy
UpgradeStatus: Upgraded to precise on 2012-05-08 (407 days ago)

[Hans Joachim Desserud (hjd)]

Thanks for taking your time to report this issue and help making Ubuntu better.

I get the same assertion error when I attempt to run hpy().heap() on Ubuntu Saucy. Strange thing is though, it looks like once you've hit the error any subsequent calls to this method works fine.

[Hans Joachim Desserud (hjd)]

Still present in guppy 0.1.9-2ubuntu4 on Ubuntu Utopic.