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From:ahristov Date:November 16 2006 1:02pm
Subject:bk commit into 5.0 tree (andrey:1.2336) BUG#24219
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Below is the list of changes that have just been committed into a local
5.0 repository of andrey. When andrey does a push these changes will
be propagated to the main repository and, within 24 hours after the
push, to the public repository.
For information on how to access the public repository
see http://dev.mysql.com/doc/mysql/en/installing-source-tree.html

ChangeSet@stripped, 2006-11-16 14:01:51+01:00, andrey@stripped +2 -0
  Fix for bug#24219 ALTER TABLE ... RENAME TO ... , DISABLE KEYS leads to crash
  (this is the 5.0 patch, because 4.1 differs)
    
  There was an improper order of doing chained operations.
    
  To the documentor: ENABLE|DISABLE KEYS combined with RENAME TO, and no other
  ALTER TABLE clause, leads to server crash independent of the presence of
  indices and data in the table.

  mysql-test/r/alter_table.result@stripped, 2006-11-16 14:01:46+01:00, andrey@stripped +21 -21
    post-merge fix
    my locale is utf8, and this breaks non-utf8 stuff when doing manual merge :(

  sql/sql_table.cc@stripped, 2006-11-16 14:01:46+01:00, andrey@stripped +28 -23
    If there is operation on the KEYS, first do it
    and then do a rename if there is such. Or, we will crash because
    the underlying table has changed.
    

# This is a BitKeeper patch.  What follows are the unified diffs for the
# set of deltas contained in the patch.  The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User:	andrey
# Host:	example.com
# Root:	/work/bug24219/my50

--- 1.325/sql/sql_table.cc	2006-11-16 14:02:02 +01:00
+++ 1.326/sql/sql_table.cc	2006-11-16 14:02:02 +01:00
@@ -3300,13 +3300,35 @@ 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);
@@ -3328,31 +3350,14 @@ 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())
@@ -3370,7 +3375,7 @@ 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);
   }

--- 1.57/mysql-test/r/alter_table.result	2006-11-16 14:02:02 +01:00
+++ 1.58/mysql-test/r/alter_table.result	2006-11-16 14:02:02 +01:00
@@ -428,42 +428,42 @@ t1	MyISAM	10	Fixed	1	37	X	X	X	X	X	X	X	X	
 drop table t1;
 set names koi8r;
 create table t1 (a char(10) character set koi8r);
-insert into t1 values ('ÔÅÓÔ');
 select a,hex(a) from t1;
 a	hex(a)
-ÔÅÓÔ	D4C5D3D4
 alter table t1 change a a char(10) character set cp1251;
 select a,hex(a) from t1;
 a	hex(a)
-ÔÅÓÔ	F2E5F1F2
 alter table t1 change a a binary(4);
 select a,hex(a) from t1;
 a	hex(a)
-òåñò	F2E5F1F2
 alter table t1 change a a char(10) character set cp1251;
 select a,hex(a) from t1;
 a	hex(a)
-ÔÅÓÔ	F2E5F1F2
 alter table t1 change a a char(10) character set koi8r;
 select a,hex(a) from t1;
 a	hex(a)
-ÔÅÓÔ	D4C5D3D4
 alter table t1 change a a varchar(10) character set cp1251;
 select a,hex(a) from t1;
 a	hex(a)
-ÔÅÓÔ	F2E5F1F2
 alter table t1 change a a char(10) character set koi8r;
 select a,hex(a) from t1;
 a	hex(a)
-ÔÅÓÔ	D4C5D3D4
 alter table t1 change a a text character set cp1251;
 select a,hex(a) from t1;
 a	hex(a)
-ÔÅÓÔ	F2E5F1F2
 alter table t1 change a a char(10) character set koi8r;
 select a,hex(a) from t1;
 a	hex(a)
-ÔÅÓÔ	D4C5D3D4
 delete from t1;
 show create table t1;
 Table	Create Table
@@ -528,7 +528,7 @@ ALTER TABLE T12207 DISCARD TABLESPACE;
 ERROR HY000: Table storage engine for 'T12207' doesn't have this option
 DROP TABLE T12207;
 create table t1 (a text) character set koi8r;
-insert into t1 values (_koi8r'ÔÅÓÔ');
 select hex(a) from t1;
 hex(a)
 D4C5D3D4
@@ -556,16 +556,6 @@ ERROR 3D000: No database selected
 alter table test.t1 rename test.t1;
 use test;
 drop table t1;
-create table t1 (mycol int(10) not null);
-alter table t1 alter column mycol set default 0;
-desc t1;
-Field	Type	Null	Key	Default	Extra
-mycol	int(10)	NO		0	
-drop table t1;
-create table t1 (t varchar(255) default null, key t (t(80)))
-engine=myisam default charset=latin1;
-alter table t1 change t t text;
-drop table t1;
 DROP TABLE IF EXISTS bug24219;
 DROP TABLE IF EXISTS bug24219_2;
 CREATE TABLE bug24219 (a INT, INDEX(a));
@@ -577,3 +567,13 @@ 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;
+Field	Type	Null	Key	Default	Extra
+mycol	int(10)	NO		0	
+drop table t1;
+create table t1 (t varchar(255) default null, key t (t(80)))
+engine=myisam default charset=latin1;
+alter table t1 change t t text;
+drop table t1;
Thread
bk commit into 5.0 tree (andrey:1.2336) BUG#24219ahristov16 Nov