src/share/classes/com/sun/tools/javac/comp/Attr.java

*** 4007,4018 ****
                      log.error(env.tree.pos(), "enum.no.subclassing");
  
                  // Enums may not be extended by source-level classes
                  if (st.tsym != null &&
                      ((st.tsym.flags_field & Flags.ENUM) != 0) &&
!                     ((c.flags_field & (Flags.ENUM | Flags.COMPOUND)) == 0) &&
!                     !target.compilerBootstrap(c)) {
                      log.error(env.tree.pos(), "enum.types.not.extensible");
                  }
                  attribClassBody(env, c);
  
                  chk.checkDeprecatedAnnotation(env.tree.pos(), c);
--- 4007,4017 ----
                      log.error(env.tree.pos(), "enum.no.subclassing");
  
                  // Enums may not be extended by source-level classes
                  if (st.tsym != null &&
                      ((st.tsym.flags_field & Flags.ENUM) != 0) &&
!                     ((c.flags_field & (Flags.ENUM | Flags.COMPOUND)) == 0)) {
                      log.error(env.tree.pos(), "enum.types.not.extensible");
                  }
                  attribClassBody(env, c);
  
                  chk.checkDeprecatedAnnotation(env.tree.pos(), c);