[ python-Bugs-1714773 ] python throws an error when unpacking bz2 file

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Bugs item #1714773, was opened at 2007-05-08 17:23
Message generated for change (Comment added) made by runnig
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Category: None
Group: Python 2.5
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: runnig (runnig)
Assigned to: Nobody/Anonymous (nobody)
Summary: python throws an error when unpacking bz2 file

Initial Comment:
C:\work\python>c:\work\python\25\py.exe
Python 2.5 (r25:51908, Feb 13 2007, 14:33:20) [MSC v.1400 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
C:\work\python>ez_setup.py wxpython
Searching for wxpython
Reading http://cheeseshop.python.org/pypi/wxpython/
Couldn't find index page for 'wxpython' (maybe misspelled?)
Scanning index of all packages (this may take a while)
Reading http://cheeseshop.python.org/pypi/
Reading http://cheeseshop.python.org/pypi/wxPython/2.6.3.2
Reading http://wxPython.org/
Reading http://wxPython.org/download.php
Best match: wxPython src-2.8.3.0
Downloading http://prdownloads.sourceforge.net/wxpython/wxPython-src-2.8.3.0.tar.bz2
Processing wxPython-src-2.8.3.0.tar.bz2


I think, when unpacking bz2, an error occurs and windows shows an error about 
"python.exe has encountered a problem and needs to close"


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>Comment By: runnig (runnig)
Date: 2007-05-16 13:54

Message:
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i've downloaded file wxPython-src-2.8.4.0.tar.bz2 manually and wrote a
test script:
----------
import bz2

arch = bz2.BZ2File( 'wxPython-src-2.8.4.0.tar.bz2','r' )
lines = arch.readlines()
----------
as i can understand, python crashes right after start of reading this bz2
file

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Comment By: Alan McIntyre (alanmcintyre)
Date: 2007-05-16 11:34

Message:
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Well, this problem doesn't seem to occur on my Windows XP Pro (SP2)
machine for 2.5.1 (both the "official" build and one I built locally). 
It's going to be a week or two before I'll be able to get back to the one
machine on which it crashes.  If the original poster can provide any
additional information (crash logs, etc) before then I'll try to have a
look.

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Comment By: Alan McIntyre (alanmcintyre)
Date: 2007-05-15 01:53

Message:
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I downloaded the file from the URL given above, and when I tried to
decompress it in a single shot (with bz2.decompress), python crashes. 
Reading the raw bz2 data from file into a string in memory works ok, but
attempting to use bz2.decompress on that data causes the crash.

I could only get this to happen under 2.5.1 on a Windows XP machine (media
center edition); it seems to work ok on OSX (Python 2.5) and Linux (both
2.4.4 and the current trunk).  I will be able to take a closer look at this
tomorrow when I have access to a Windows machine with a compiler on it.



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Comment By: Georg Brandl (gbrandl)
Date: 2007-05-13 16:54

Message:
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Can you try to take the .tar.bz2 file and unpack it yourself using
Python's bz2 module?
We can then find out where exactly the segfault occurs.

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