Fix of #503

src/dotty/tools/dotc/transform/Constructors.scala

@@ -37,7 +37,7 @@ class Constructors extends MiniPhaseTransform with SymTransformer { thisTransfor
    */
   override def transformSym(sym: SymDenotation)(implicit ctx: Context): SymDenotation = {
     def ownerBecomesConstructor(owner: Symbol): Boolean =
-      (owner.isLocalDummy || owner.isTerm && !owner.is(Method | Lazy)) &&
+      (owner.isLocalDummy || owner.isTerm && !owner.is(MethodOrLazy)) &&
       owner.owner.isClass
     if (ownerBecomesConstructor(sym.owner))
       sym.copySymDenotation(owner = sym.owner.enclosingClass.primaryConstructor)
@@ -54,9 +54,8 @@ class Constructors extends MiniPhaseTransform with SymTransformer { thisTransfor
    *  constructor.
    */
   private def mightBeDropped(sym: Symbol)(implicit ctx: Context) =
-    sym.is(Private, butNot = KeeperFlags) && !sym.is(MutableParamAccessor)
+    sym.is(Private, butNot = MethodOrLazy) && !sym.is(MutableParamAccessor)
 
-  private final val KeeperFlags = Method | Lazy
   private final val MutableParamAccessor = allOf(Mutable, ParamAccessor)
 
   override def transformTemplate(tree: Template)(implicit ctx: Context, info: TransformerInfo): Tree = {

src/dotty/tools/dotc/transform/ExplicitOuter.scala

@@ -213,7 +213,7 @@ object ExplicitOuter {
       case id: Ident =>
         id.tpe match {
           case ref @ TermRef(NoPrefix, _) =>
-            ref.symbol.is(Method) && isOuter(id.symbol.owner.enclosingClass)
+            ref.symbol.is(Hoistable) && isOuter(id.symbol.owner.enclosingClass)
             // methods will be placed in enclosing class scope by LambdaLift, so they will get
             // an outer path then.
           case _ => false
@@ -225,6 +225,8 @@ object ExplicitOuter {
     }
   }
 
+  private final val Hoistable = Method | Lazy | Module
+
   /** The outer prefix implied by type `tpe` */
   private def outerPrefix(tpe: Type)(implicit ctx: Context): Type = tpe match {
     case tpe: TypeRef =>

tests/pos/i503.scala

@@ -0,0 +1,13 @@
+class HelloWorld {
+  def main(args: Array[String]): Unit = {
+    object TypeBool;
+
+    class Fct {
+      def g(x : Int) = TypeBool
+    }
+
+    trait Fct2 {
+      def g(x : Int) = TypeBool
+    }
+  }
+}

tests/pos/superacc.scala

@@ -0,0 +1,17 @@
+// scenario one: supercalls in traits
+abstract class C {
+  def foo: Int = 2
+  def baz: Int = 2
+}
+
+trait T extends C {
+  override def foo = super.foo + 1
+}
+
+
+// scenario 2: supercalls in nested classes
+class D extends C with T {
+  class I {
+    val x= D.super.baz
+  }
+}