New submission from Stefan Behnel <sco...@users.sourceforge.net>:
PySequence_GetSlice() in Objects/abstract.c contains the following code:
mp = s->ob_type->tp_as_mapping;
if (mp->mp_subscript) {
This crashes when the type's "tp_as_mapping" is NULL. The obvious fix is to
simply write
if (mp && mp->mp_subscript)
as basically everywhere else around that function. The problem seems to have
occurred during a rewrite for Python 3, it's ok in the 2.x series.
----------
components: Interpreter Core
messages: 116092
nosy: scoder
priority: normal
severity: normal
status: open
title: PySequence_GetSlice() lacks a NULL check
type: crash
versions: Python 3.1, Python 3.2
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue9834>
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