[Matplotlib-users] segmentation fault and / or bus error with script that cranks out plots with TkAgg backend

[tenspd137 . <dcd...@gm...>]

Hi all,

I am running a script that cranks out multiple plots in a loop.  The script
has plt.show() as the very last line as I think you are supposed to do.
All plots show up, but I get a seg fault (sometimes a bus error - I haven't
figured why it occasionally does that) when I close the last plot and the
script exits.  I was wondering if someone could help me figure out what
info to grab to determine what is causing it.  I use gentoo and recently
did an upgrade world, so I am guessing some new library is not playing
nicely as this always seemed to work before.  Also, when I switch to Qt4Agg
backend,
everything works as expected, but if I can help iron out a bug, I would
like to - I really think that matplotlib is an excellent piece of software.

Pertinent info:

uname -a:
Linux dayd 3.10.15-gentoo #6 SMP Sat Dec 14 15:53:47 MST 2013 x86_64
Intel(R) Xeon(R) CPU E5-2620 0 @ 2.00GHz GenuineIntel GNU/Linux

Matplotlib version - 1.3.1

matplotlibrc:
backend: TkAgg (Qt4Agg works as expected)
interactive: False

because it segfaults
 python3.3 testplot.py --verbose-helpful > output.txt
outputs nothing

gcc --version:
gcc (Gentoo 4.8.2 p1.0, pie-0.5.8) 4.8.2
Copyright (C) 2013 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

script to reproduce the problem:

import sys
import matplotlib.pyplot as plt

def main():
    for x in range(6):
        plt.figure()
        plt.title(x)
        plt.plot([1,1],[1,1],'r.')
    plt.show()

if __name__ == "__main__":
    sys.exit(main())

I found some instructions on how to get debug info when you install a
package in gentoo.  If anyone else can recreate this or need some more info
from me - please let me know.  I will do what I can.

Thanks!