Python segmentation fault?

[Michael B. Trausch]

Is there a way to debug scripts that cause segmentation faults? I can
do a backtrace in gdb on Python, but that doesn't really help me all
that much since, well, it has nothing to do with my script...

Any ideas?

Thanks,
Mike

 

[Paul Rubin]

Is there a way to debug scripts that cause segmentation faults? I can
do a backtrace in gdb on Python, but that doesn't really help me all
that much since, well, it has nothing to do with my script...

Scripts should never cause segmentation faults. Extension modules can
cause them. One frequent cause is a refcount management error. There
are various tools around for checking refcount correctness. Here is one:

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/496791

 

[Klaas]

Is there a way to debug scripts that cause segmentation faults? I can
do a backtrace in gdb on Python, but that doesn't really help me all
that much since, well, it has nothing to do with my script...

Yes. If you think it is a python interpreter bug, create a
self-contained script which reproduces the issue, and file a python bug
report.

I'd be interested to see the stack trace--I recently uncovered a
segfault bug in python2.5 and I might be able to tell you if it is the
same one.

-Mike

 

[Markus Rosenstihl]

Is there a way to debug scripts that cause segmentation faults? I can
do a backtrace in gdb on Python, but that doesn't really help me all
that much since, well, it has nothing to do with my script...

Any ideas?

Thanks,
Mike

I had segmentation faults on Mac, they were coming from a unpatched
readline 5.1
Once compiled with readline 5.2 it was working flawlessly

Regards,
Markus

 

[Michael B. Trausch]

Yes. If you think it is a python interpreter bug, create a
self-contained script which reproduces the issue, and file a python bug
report.

I'd be interested to see the stack trace--I recently uncovered a
segfault bug in python2.5 and I might be able to tell you if it is the
same one.

I finally found out what the problem was -- I was using something that
was in the wx.* set of classes and functions, and it was the item
segfaulting. I was apparently making an assumption or doing something
wrong, though I didn't have this project in Subversion at the time so I
can't say exactly which changes fixed it. I have it in Subversion now,
though, so that in the future I can be sure to better find out what is
going on by having all of the information handy.

Thanks for the help!

-- Mike