Pablo Galindo Salgado <pablog...@gmail.com> added the comment:

> I don't see how this could be an uninitialized read, although I'm willing to 
> be wrong.

It can be uninitialized if the parenstack[nested_depth] value is itself 
initialized, which can happen if the memory block pointed by parenstack has not 
been initialized to some value after malloc'ed and parenstack[nested_depth] 
never got a value.

But yeah, a lot of hypotheticals here that I am sure are not possible in the 
actual code.

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue46280>
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