2 files changed, 10 insertions, 0 deletions
diff --git a/src/reflect/scala/reflect/internal/TreeInfo.scala b/src/reflect/scala/reflect/internal/TreeInfo.scala
index 7423a2ff57..8908036442 100644
--- a/src/reflect/scala/reflect/internal/TreeInfo.scala
+++ b/src/reflect/scala/reflect/internal/TreeInfo.scala
@@ -330,6 +330,9 @@ abstract class TreeInfo {
   def preSuperFields(stats: List[Tree]): List[ValDef] =
     stats collect { case vd: ValDef if isEarlyValDef(vd) => vd }
 
+  def hasUntypedPreSuperFields(stats: List[Tree]): Boolean =
+    preSuperFields(stats) exists (_.tpt.isEmpty)
+
   def isEarlyDef(tree: Tree) = tree match {
     case TypeDef(mods, _, _, _) => mods hasFlag PRESUPER
     case ValDef(mods, _, _, _) => mods hasFlag PRESUPER
@@ -494,6 +497,10 @@ abstract class TreeInfo {
   def isSynthCaseSymbol(sym: Symbol) = sym hasAllFlags SYNTH_CASE_FLAGS
   def hasSynthCaseSymbol(t: Tree)    = t.symbol != null && isSynthCaseSymbol(t.symbol)
 
+  def isTraitRef(tree: Tree): Boolean = {
+    val sym = if (tree.tpe != null) tree.tpe.typeSymbol else null
+    ((sym ne null) && sym.initialize.isTrait)
+  }
 
   /** Applications in Scala can have one of the following shapes:
    *
diff --git a/src/reflect/scala/reflect/internal/Trees.scala b/src/reflect/scala/reflect/internal/Trees.scala
index 6df4b75a88..0087bb93e7 100644
--- a/src/reflect/scala/reflect/internal/Trees.scala
+++ b/src/reflect/scala/reflect/internal/Trees.scala
@@ -1034,6 +1034,9 @@ trait Trees extends api.Trees { self: SymbolTable =>
   def New(tpe: Type, args: Tree*): Tree =
     ApplyConstructor(TypeTree(tpe), args.toList)
 
+  def New(tpe: Type, argss: List[List[Tree]]): Tree =
+    New(TypeTree(tpe), argss)
+
   def New(sym: Symbol, args: Tree*): Tree =
     New(sym.tpe, args: _*)