src/jdk.compiler/share/classes/com/sun/tools/javac/comp/TypeEnter.java

*** 998,1007 ****
--- 998,1008 ----
              JCTree defaultConstructor = null;
  
              // Add default constructor if needed.
              DefaultConstructorHelper helper = getDefaultConstructorHelper(env);
              if (helper != null) {
+                 chk.checkDefaultConstructor(sym, tree.pos());
                  defaultConstructor = defaultConstructor(make.at(tree.pos), helper);
                  tree.defs = tree.defs.prepend(defaultConstructor);
              }
              if (!sym.isRecord()) {
                  enterThisAndSuper(sym, env);