[Issue 19270] is expression fails with function types

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19270

RazvanN <razvan.nitu1305 at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |razvan.nitu1305 at gmail.com

--- Comment #2 from RazvanN <razvan.nitu1305 at gmail.com> ---
I don't know if this is intentional or not, but it seems that this form of is
expressions only work for the first of AST nesting.

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