src/jdk.compiler/share/classes/com/sun/tools/javac/code/Symbol.java

@@ -28,11 +28,10 @@
  import java.lang.annotation.Annotation;
  import java.lang.annotation.Inherited;
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.EnumSet;
- import java.util.HashMap;
  import java.util.Map;
  import java.util.Set;
  import java.util.concurrent.Callable;
  import java.util.function.Supplier;
  import java.util.function.Predicate;

@@ -403,21 +402,29 @@
              (owner.flags() & INTERFACE) != 0 && kind != MTH &&
               name != name.table.names._this;
      }
  
      public boolean isInterface() {
-         return (flags() & INTERFACE) != 0;
+         return (flags_field & INTERFACE) != 0;
      }
  
      public boolean isAbstract() {
          return (flags_field & ABSTRACT) != 0;
      }
  
      public boolean isPrivate() {
          return (flags_field & Flags.AccessFlags) == PRIVATE;
      }
  
+     public boolean isValueClass() {
+         return (flags_field & VALUE_CLASS) != 0;
+     }
+ 
+     public boolean isIdentityClass() {
+         return !isInterface() && (flags_field & IDENTITY_TYPE) != 0;
+     }
+ 
      public boolean isPublic() {
          return (flags_field & Flags.AccessFlags) == PUBLIC;
      }
  
      public boolean isEnum() {

@@ -1339,11 +1346,11 @@
  
          public ClassSymbol(long flags, Name name, Symbol owner) {
              this(
                  flags,
                  name,
-                 new ClassType(Type.noType, null, null),
+                 new ClassType(Type.noType, null, null, List.nil()),
                  owner);
              this.type.tsym = this;
          }
  
          public void addPermittedSubclass(ClassSymbol csym, int pos) {