Fix class extends value (#2662)

This patch fixes #2658 and ensures that when a class extends value is null and the class has no explicit constructor
the proper error is raised during constructing a class instance.

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu

jerry-core/ecma/operations/ecma-function-object.c

@@ -1048,6 +1048,16 @@ ecma_op_function_construct (ecma_object_t *func_obj_p, /**< Function object */
                                               arguments_list_len);
       break;
     }
+    case ECMA_OBJECT_TYPE_GENERAL:
+    {
+      /* Catch the special case when a the class extends value in null
+         and the class has no explicit constructor to raise TypeError.*/
+      JERRY_ASSERT (!ecma_op_function_has_construct_flag (arguments_list_p));
+      JERRY_ASSERT (ecma_get_object_prototype (func_obj_p) == NULL);
+
+      ret_value = ecma_raise_type_error (ECMA_ERR_MSG ("Super constructor null is not a constructor."));
+      break;
+    }
 #endif /* !CONFIG_DISABLE_ES2015_CLASS */
     default:
     {