Merge ahristov@bk-internal.mysql.com:/home/bk/mysql-5.0-maint

into  example.com:/work/bug24219/my50


sql/sql_table.cc:
  Auto merged

mysql-test/r/alter_table.result

@@ -556,6 +556,17 @@ ERROR 3D000: No database selected
 alter table test.t1 rename test.t1;
 use test;
 drop table t1;
+DROP TABLE IF EXISTS bug24219;
+DROP TABLE IF EXISTS bug24219_2;
+CREATE TABLE bug24219 (a INT, INDEX(a));
+SHOW INDEX FROM bug24219;
+Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment
+bug24219	1	a	1	a	A	NULL	NULL	NULL	YES	BTREE	
+ALTER TABLE bug24219 RENAME TO bug24219_2, DISABLE KEYS;
+SHOW INDEX FROM bug24219_2;
+Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment
+bug24219_2	1	a	1	a	A	NULL	NULL	NULL	YES	BTREE	disabled
+DROP TABLE bug24219_2;
 create table t1 (mycol int(10) not null);
 alter table t1 alter column mycol set default 0;
 desc t1;

mysql-test/t/alter_table.test

@@ -402,6 +402,24 @@ alter table test.t1 rename test.t1;
 use test;
 drop table t1;
 
+#
+# Bug#24219 - ALTER TABLE ... RENAME TO ... , DISABLE KEYS leads to crash
+#
+--disable_warnings
+DROP TABLE IF EXISTS bug24219;
+DROP TABLE IF EXISTS bug24219_2;
+--enable_warnings
+
+CREATE TABLE bug24219 (a INT, INDEX(a));
+
+SHOW INDEX FROM bug24219;
+
+ALTER TABLE bug24219 RENAME TO bug24219_2, DISABLE KEYS;
+
+SHOW INDEX FROM bug24219_2;
+
+DROP TABLE bug24219_2;
+
 # End of 4.1 tests
 
 #

sql/sql_table.cc

@@ -3098,13 +3098,35 @@ view_err:
   if (!(alter_info->flags & ~(ALTER_RENAME | ALTER_KEYS_ONOFF)) &&
       !table->s->tmp_table) // no need to touch frm
   {
-    error=0;
     VOID(pthread_mutex_lock(&LOCK_open));
-    if (new_name != table_name || new_db != db)
+
+    switch (alter_info->keys_onoff) {
+    case LEAVE_AS_IS:
+      error= 0;
+      break;
+    case ENABLE:
+      wait_while_table_is_used(thd, table, HA_EXTRA_FORCE_REOPEN);
+      error= table->file->enable_indexes(HA_KEY_SWITCH_NONUNIQ_SAVE);
+      /* COND_refresh will be signaled in close_thread_tables() */
+      break;
+    case DISABLE:
+      wait_while_table_is_used(thd, table, HA_EXTRA_FORCE_REOPEN);
+      error=table->file->disable_indexes(HA_KEY_SWITCH_NONUNIQ_SAVE);
+      /* COND_refresh will be signaled in close_thread_tables() */
+      break;
+    }
+    if (error == HA_ERR_WRONG_COMMAND)
+    {
+      push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_NOTE,
+			  ER_ILLEGAL_HA, ER(ER_ILLEGAL_HA),
+			  table->alias);
+      error= 0;
+    }
+
+    if (!error && (new_name != table_name || new_db != db))
     {
       thd->proc_info="rename";
       /* Then do a 'simple' rename of the table */
-      error=0;
       if (!access(new_name_buff,F_OK))
       {
 	my_error(ER_TABLE_EXISTS_ERROR, MYF(0), new_name);
@@ -3126,31 +3148,14 @@ view_err:
       }
     }
 
-    if (!error)
-    {
-      switch (alter_info->keys_onoff) {
-      case LEAVE_AS_IS:
-        break;
-      case ENABLE:
-        wait_while_table_is_used(thd, table, HA_EXTRA_FORCE_REOPEN);
-        error= table->file->enable_indexes(HA_KEY_SWITCH_NONUNIQ_SAVE);
-        /* COND_refresh will be signaled in close_thread_tables() */
-        break;
-      case DISABLE:
-        wait_while_table_is_used(thd, table, HA_EXTRA_FORCE_REOPEN);
-        error=table->file->disable_indexes(HA_KEY_SWITCH_NONUNIQ_SAVE);
-        /* COND_refresh will be signaled in close_thread_tables() */
-        break;
-      }
-    }
-
     if (error == HA_ERR_WRONG_COMMAND)
     {
       push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_NOTE,
 			  ER_ILLEGAL_HA, ER(ER_ILLEGAL_HA),
 			  table->alias);
-      error=0;
+      error= 0;
     }
+
     if (!error)
     {
       if (mysql_bin_log.is_open())
@@ -3168,7 +3173,7 @@ view_err:
       error= -1;
     }
     VOID(pthread_mutex_unlock(&LOCK_open));
-    table_list->table=0;				// For query cache
+    table_list->table= NULL;                    // For query cache
     query_cache_invalidate3(thd, table_list, 0);
     DBUG_RETURN(error);
   }