[issue24098] Multiple use after frees in obj2ast_* methods

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Bad things happen not only when a list shrinks, but also when it grows during iteration.

The one solution is to check if the size is changed on every iteration. The other solution is to convert a list to a tuple for iterating.

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versions: +Python 2.7 -Python 3.4
Added file: http://bugs.python.org/file44838/issue24098-check-size.patch

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