[issue31499] ElementTree crash while cleaning up ParseError

[STINNER Victor]

STINNER Victor added the comment:

Python 2.7 is not affected because it doesn't implement tp_clear (it doesn't have xmlparser_gc_clear()), only xmlparser_dealloc() calls EXPAT(ParserFree)(self->parser).

I'm unable to reproduce the bug in Python 3.5 nor 3.6.

bug2.py creates a reference cycle the "except etree.ParseError as exc: e = exc  # must keep local reference!" which requires to trigger a garbage collection to clear the "parser" variable.

----------

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue31499>
_______________________________________