--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/MemberEnter.java	Mon Sep 17 14:16:31 2018 +0530
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/MemberEnter.java	Mon Sep 17 11:49:20 2018 +0200
@@ -183,7 +183,7 @@
 
         //if this is a default method, add the DEFAULT flag to the enclosing interface
         if ((tree.mods.flags & DEFAULT) != 0) {
-            m.enclClass().flags_field |= DEFAULT;
+            m.owner.flags_field |= DEFAULT;
         }
 
         Env<AttrContext> localEnv = methodEnv(tree, env);