create table options bug:

parse_engine_table_options() was only called when there was at least option with a
non-default value. otherwise it was not called and option structure was not
allocated at all. NULL pointer dereference in ::open().

sql/table.cc

@@ -1633,10 +1633,11 @@ static int open_binary_frm(THD *thd, TABLE_SHARE *share, uchar *head,
   if (share->db_create_options & HA_OPTION_TEXT_CREATE_OPTIONS)
   {
     DBUG_ASSERT(options_len);
-    if (engine_table_options_frm_read(options, options_len, share) ||
-        parse_engine_table_options(thd, handler_file->ht, share))
+    if (engine_table_options_frm_read(options, options_len, share))
       goto free_and_err;
   }
+  if (parse_engine_table_options(thd, handler_file->ht, share))
+    goto free_and_err;
   my_free(buff, MYF(MY_ALLOW_ZERO_PTR));
 
   if (share->found_next_number_field)

storage/example/ha_example.cc

@@ -367,6 +367,15 @@ int ha_example::open(const char *name, int mode, uint test_if_locked)
     DBUG_RETURN(1);
   thr_lock_data_init(&share->lock,&lock,NULL);
 
+  example_table_options_struct *options=
+    (example_table_options_struct *)table->s->option_struct;
+
+  DBUG_ASSERT(options);
+  DBUG_PRINT("info", ("strparam: '%-.64s'  ullparam: %llu  enumparam: %u  "\
+                      "boolparam: %u",
+                      (options->strparam ? options->strparam : "<NULL>"),
+                      options->ullparam, options->enumparam, options->boolparam));
+
   DBUG_RETURN(0);
 }