Track down SIGABRT

[Skip Montanaro]

Assuming you have gdb available, you should be able to attach to the
running process, then set a breakpoint in relevant functions (like
exit() or abort()). Once there, you can pick through the C stack
manually (kind of tedious) or use the gdbinit file which comes with
Python to get a Python stack trace (much less tedious, once you've
made sure any version dependencies have been eliminated). Or, with the
latest versions of gdb (7.x I think), you get more stuff built into
gdb itself.

More details here:

https://wiki.python.org/moin/DebuggingWithGdb

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