Any does not qualify for parent class

Author: liufengyun

compiler/src/dotty/tools/dotc/typer/Typer.scala

@@ -515,7 +515,7 @@ class Typer extends Namer
       case templ: untpd.Template =>
         import untpd._
         var templ1 = templ
-        def isEligible(tp: Type) = tp.exists && !tp.typeSymbol.is(Final)
+        def isEligible(tp: Type) = tp.exists && !tp.typeSymbol.is(Final) && tp.classSymbol != defn.AnyClass
         if (templ1.parents.isEmpty &&
             isFullyDefined(pt, ForceDegree.noBottom) &&
             isEligible(pt.underlyingClassRef(refinementOK = false)))