[Issue 8663] AliasThis is not used in comparison

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=8663

--- Comment #4 from Walter Bright <bugzilla at digitalmars.com> ---
This is another facet of https://issues.dlang.org/show_bug.cgi?id=5380

I'm not sure we should be 'fixing' this.

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