lex crashes python when given a bad regex

[arielb1]

To Reproduce:
$ cat > crash.py << EOF
import lex

tokens = ('STAR',)
t_STAR = '*'

lex.lex(optimize=1)
EOF
$ python3 --version; uname -a
Python 3.2.3rc2
Linux ariel-linux2 3.2.0-2-686-pae #1 SMP Mon May 21 18:24:12 UTC 2012 i686 GNU/Linux
$ python3 crash.py
Fatal Python error: Cannot recover from stack overflow.
Aborted
Expected Result:
A clean exception.
Actual Result:
Python segfaults. Note that no exception is raised - Python segfaults, giving no stack trace.

[dabeaz]

This looks like a Python bug, not a PLY bug. Suggest reporting to the python bug tracker.