[New-bugs-announce] [issue9751] _PyInstance_Lookup() defeats its purpose

[Armin Rigo]

New submission from Armin Rigo <arigo at users.sourceforge.net>:

_PyInstance_Lookup() is documented as follows:

    The point of this routine is that it never calls arbitrary Python
    code, so is always "safe":  all it does is dict lookups.

But of course dict lookups can call arbitrary Python code.  This function has no purpose, because it's not possible to be "safe".  I checked in a crasher:

http://svn.python.org/projects/python/branches/release27-maint/Lib/test/crashers/gc_has_finalizer.py

----------
components: Interpreter Core
messages: 115426
nosy: arigo
priority: low
severity: normal
stage: needs patch
status: open
title: _PyInstance_Lookup() defeats its purpose
type: crash
versions: Python 2.7

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<http://bugs.python.org/issue9751>
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