Closes #3803. No Review.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/compiler/scala/tools/nsc/transform/SpecializeTypes.scala b/src/compiler/scala/tools/nsc/transform/SpecializeTypes.scala
index 0f6b3c26f5..9c7059bc76 100644
--- a/src/compiler/scala/tools/nsc/transform/SpecializeTypes.scala
+++ b/src/compiler/scala/tools/nsc/transform/SpecializeTypes.scala
@@ -1147,7 +1147,7 @@ abstract class SpecializeTypes extends InfoTransform with TypingTransformers {
           if (symbol.isConstructor) {
             val t = atOwner(symbol) {
               val superRef: Tree = Select(Super(nme.EMPTY.toTypeName, nme.EMPTY.toTypeName), nme.CONSTRUCTOR)
-              forwardCtorCall(tree.pos, superRef, vparamss)
+              forwardCtorCall(tree.pos, superRef, vparamss, symbol.owner)
             }
             if (symbol.isPrimaryConstructor) localTyper typed {
                 atPos(symbol.pos)(treeCopy.DefDef(tree, mods, name, tparams, vparamss, tpt, Block(List(t), Literal(()))))
@@ -1401,9 +1401,9 @@ abstract class SpecializeTypes extends InfoTransform with TypingTransformers {
     atPos(pos) { (receiver /: argss) (Apply) }
   }
 
-  private def forwardCtorCall(pos: util.Position, receiver: Tree, paramss: List[List[ValDef]]): Tree = {
+  private def forwardCtorCall(pos: util.Position, receiver: Tree, paramss: List[List[ValDef]], clazz: Symbol): Tree = {
     val argss = paramss map (_ map (x =>
-      if (x.name.endsWith("$sp"))
+      if (x.name.endsWith("$sp") && clazz.info.member(nme.originalName(x.name)).isPublic)
         gen.mkAsInstanceOf(Literal(Constant(null)), x.symbol.tpe)
       else
         Ident(x.symbol))