Merge mysql.com:/home/ram/work/b28652/b28652.5.0

into  mysql.com:/home/ram/work/b28652/b28652.5.1

mysql-test/include/mix1.inc

@@ -633,6 +633,14 @@ EXPLAIN SELECT COUNT(*) FROM t2 WHERE stat_id IN (1,3) AND acct_id=785;
 
 DROP TABLE t1,t2; 
 
+#
+# Bug #28652: assert when alter innodb table operation
+#
+create table t1(a int) engine=innodb;
+alter table t1 comment '123';
+show create table t1;
+drop table t1;
+
 --echo End of 5.0 tests
 
 #

mysql-test/r/innodb_mysql.result

@@ -621,6 +621,14 @@ EXPLAIN SELECT COUNT(*) FROM t2 WHERE stat_id IN (1,3) AND acct_id=785;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	range	idx1,idx2	idx1	9	NULL	2	Using where; Using index
 DROP TABLE t1,t2;
+create table t1(a int) engine=innodb;
+alter table t1 comment '123';
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` int(11) default NULL
+) ENGINE=InnoDB DEFAULT CHARSET=latin1 COMMENT='123'
+drop table t1;
 End of 5.0 tests
 CREATE TABLE t1 (a int, b int);
 insert into t1 values (1,1),(1,2);

sql/sql_table.cc

@@ -6385,6 +6385,9 @@ view_err:
                             alter_info->keys_onoff);
     table->file->ha_external_lock(thd, F_UNLCK);
     VOID(pthread_mutex_unlock(&LOCK_open));
+    error= ha_commit_stmt(thd);
+    if (ha_commit(thd))
+      error= 1;
   }
   thd->count_cuted_fields= CHECK_FIELD_IGNORE;
 
@@ -6787,20 +6790,6 @@ view_err:
   }
   VOID(pthread_mutex_unlock(&LOCK_open));
   broadcast_refresh();
-  /*
-    The ALTER TABLE is always in its own transaction.
-    Commit must not be called while LOCK_open is locked. It could call
-    wait_if_global_read_lock(), which could create a deadlock if called
-    with LOCK_open.
-  */
-  if (!committed)
-  {
-    error = ha_commit_stmt(thd);
-    if (ha_commit(thd))
-      error=1;
-    if (error)
-      goto err;
-  }
   thd->proc_info="end";
 
   ha_binlog_log_query(thd, create_info->db_type, LOGCOM_ALTER_TABLE,
@@ -7045,8 +7034,12 @@ copy_data_between_tables(TABLE *from,TABLE *to,
   }
   to->file->extra(HA_EXTRA_NO_IGNORE_DUP_KEY);
 
-  ha_enable_transaction(thd,TRUE);
-
+  if (ha_enable_transaction(thd, TRUE))
+  {
+    error= 1;
+    goto err;
+  }
+  
   /*
     Ensure that the new table is saved properly to disk so that we
     can do a rename