--- old/src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/ClassWriter.java	2018-03-21 12:03:19.190141908 +0900
+++ new/src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/ClassWriter.java	2018-03-21 12:03:18.970135175 +0900
@@ -1040,7 +1040,14 @@
      */
     void enterInner(ClassSymbol c) {
         if (c.type.isCompound()) {
-            throw new AssertionError("Unexpected intersection type: " + c.type);
+            if (c.type.isIntersection()) {
+                types.directSupertypes(c.type).stream()
+                    .map(t -> (ClassSymbol) t.tsym)
+                    .forEach(this::enterInner);
+                return;
+            } else {
+                throw new AssertionError("Unexpected compound type: " + c.type);
+            }
         }
         try {
             c.complete();