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-rw-r--r--src/dotty/tools/dotc/core/Types.scala6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/dotty/tools/dotc/core/Types.scala b/src/dotty/tools/dotc/core/Types.scala
index 080596321..0363a8c70 100644
--- a/src/dotty/tools/dotc/core/Types.scala
+++ b/src/dotty/tools/dotc/core/Types.scala
@@ -2173,6 +2173,12 @@ object Types {
override def toString = s"PolyParam(${binder.paramNames(paramNum)})"
override def computeHash = doHash(paramNum, binder)
+ override def equals(that: Any) = that match {
+ case that: PolyParam =>
+ (this.binder eq that.binder) && this.paramNum == that.paramNum
+ case _ =>
+ false
+ }
}
/** A skolem type reference with underlying type `binder`. */