PATCH: PR middle-end/20303: Can't push more than 16 nested visibility

[Nathan Sidwell]

H. J. Lu wrote:

> 
> I will try. Also I am not sure I can use heap since I don't know where
> and when I can call VEC_free.

It should be safe to never call it.  There is only one of these objects
in existance, right?

nathan

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