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PR44684: Look through parens and similar constructs when determining whether a…

Authored by rsmith on Jan 27 2020, 6:08 PM.

Description

PR44684: Look through parens and similar constructs when determining whether a call is to a builtin.

We already had a general mechanism to do this but for some reason
weren't using it. In passing, check for the other unary operators that
can intervene in a reasonably-direct function call (we already handled
'&' but missed '*' and '+').