Message 302415 - Python tracker

Message302415

Author	vstinner
Recipients	eli.bendersky, jkloth, scoder, serhiy.storchaka, vstinner
Date	2017-09-18.07:32:39
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1505719959.78.0.466544307803.issue31499@psf.upfronthosting.co.za>
In-reply-to

Content
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.

Content

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.

History
Date	User	Action	Args
2017-09-18 07:32:39	vstinner	set	recipients: + vstinner, scoder, jkloth, eli.bendersky, serhiy.storchaka
2017-09-18 07:32:39	vstinner	set	messageid: <1505719959.78.0.466544307803.issue31499@psf.upfronthosting.co.za>
2017-09-18 07:32:39	vstinner	link	issue31499 messages
2017-09-18 07:32:39	vstinner	create