[Issue 22310] Template instantiation failures can be *very* costly

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=22310

--- Comment #2 from kinke <kinke at gmx.net> ---
(In reply to kinke from comment #1)
> only AliasThisTypeOf!T isn't,
> possibly because of the speculative instantiation inside `static if
> (is(...))`.

... and scratch that too - that's most likely just another manifestation of the
same issue, as all AliasThisTypeOf instantiations fail for the testcase.

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