Here is a testcase :
This test have been done with last matplotlib version (0.85) and TkAgg
backend + python2.3.
I haven't had time to look at the code for now but it sounds like a
"divide by zero + malloc" in the code computing the symbol possition on
Ok, this is a wired corner case but I have a real testcase (too long to
be posted here) where this crash occurs.
I also have tested without symbols :
and the result looks good and no crash occurs.
Thanks for your job on matplotlib