[Issue 11499] is-expression misbehaving with 'alias this'

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=11499

--- Comment #2 from RazvanN <razvan.nitu1305 at gmail.com> ---
PR : https://github.com/dlang/dmd/pull/8839

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