[pypy-issue] Issue #2205: Segfault on pyexpat.XMLParserType (pypy/pypy)
Silvio Ricardo Cordeiro
issues-reply at bitbucket.org
Fri Dec 11 08:39:50 EST 2015
New issue 2205: Segfault on pyexpat.XMLParserType
Silvio Ricardo Cordeiro:
The attached code segfaults on PyPy 4.1.0 for any sufficiently large input XML I have tried. The problem seems to be the following expression:
The exact iteration where the segfault happens is unpredictable (but it always happens after processing around 5MB of XML). I have 30GB free memory, so it should not be an OOM problem.
I understand the access through _start_list and _parse is not documented, but the crash seems to happen only when reading CurrentColumnNumber, which is a supported attribute for xmlparser objects. The segfault also happens with CurrentLineNumber.
Any ideas on what's going on? Should I provide a sample XML displaying the bug?
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