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Disable distribution of intersection types over applied types #23441

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Disable distribution of intersection types over applied types #23441

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10 changes: 0 additions & 10 deletions compiler/src/dotty/tools/dotc/core/TypeComparer.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -2770,16 +2770,6 @@ class TypeComparer(@constructorOnly initctx: Context) extends ConstraintHandling
* @pre !(tp1 <: tp2) && !(tp2 <:< tp1) -- these cases were handled before
*/
private def distributeAnd(tp1: Type, tp2: Type): Type = tp1 match {
case tp1 @ AppliedType(tycon1, args1) =>
tp2 match {
case AppliedType(tycon2, args2)
if tycon1.typeSymbol == tycon2.typeSymbol && tycon1 =:= tycon2 =>
val jointArgs = glbArgs(args1, args2, tycon1.typeParams)
if (jointArgs.forall(_.exists)) (tycon1 & tycon2).appliedTo(jointArgs)
else NoType
case _ =>
NoType
}
case tp1: RefinedType =>
// opportunistically merge same-named refinements
// this does not change anything semantically (i.e. merging or not merging
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