Don't search for implicit conversions to NoType #19563
Merged
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There's a good chance this will fix #19320. My problem is that without a lot of added boilerplate I cannot test it, since it's hard to have at the same time external dependencies and ad-hoc instrumentation in the compiler. But what I could observe from the minimized example, it searches for a conversion of
Concurrent[F[_]]
toNoType
and that must have caused the blowup.In any case, the change makes obvious sense, so let's add that and see whether it improves things.