New submission from random832:

I was writing something that iterates over all objects in gc.get_objects(). I 
don't know precisely where the offending tuple is coming from, but nearby 
objects in gc.get_objects() appear to be related to frozen_importlib.

A tuple exists somewhere with a null pointer in it. Attempting to iterate over 
it or access its item results in a segmentation fault.

I confirmed this on both Linux and OSX.

Python 3.6.0a0 (default:778ccbe3cf74, Apr 20 2016, 20:17:38)

----------
components: Interpreter Core
files: fnt.py
messages: 263866
nosy: random832
priority: normal
severity: normal
status: open
title: segfault due to null pointer in tuple
versions: Python 3.6
Added file: http://bugs.python.org/file42545/fnt.py

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<http://bugs.python.org/issue26811>
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