Fix #8313: special case typeparamCorrespondsToField #8369
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odersky
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Mar 6, 2020
| @@ -2193,13 +2193,15 @@ class TypeComparer(initctx: Context) extends ConstraintHandling[AbsentContext] w | |||
| /** Returns last check's debug mode, if explicitly enabled. */ | |||
| def lastTrace(): String = "" | |||
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| /** Does `tycon` has a field with type `tparam`? Special cased for `scala.*:` | |||
OlivierBlanvillain
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Special case
typeparamCorrespondsToFieldtoscala.*:. Since*:is artificially added to tuples, we also need to special case that logic to conclude that*:[A, _]and*:[B, _]are disjoint when knowing thatAandBare disjoint.