Enable exhaustivity and reachability checks for opaque types #23909
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nox213
commented
Sep 12, 2025
| classSym.is(Case) || | ||
| (tpw.isInstanceOf[TypeRef] && { | ||
| val tref = tpw.asInstanceOf[TypeRef] | ||
| tref.symbol.isOpaqueAlias && !tref.info.hiBound.isNothingType |
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Should I extract this logic into a separate function? If so, where would be a good place to put it?
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closes #23620
If opaques type have upper bounds, use it for exhaustivity and reachability checks