Merge bk-internal:/home/bk/mysql-4.1/

into serg.mylan:/usr/home/serg/Abk/mysql-4.1

libmysqld/lib_sql.cc

@@ -435,11 +435,6 @@ void STDCALL mysql_server_end()
   my_free((char*) copy_arguments_ptr, MYF(MY_ALLOW_ZERO_PTR));
   copy_arguments_ptr=0;
   clean_up(0);
-#ifdef THREAD
-  /* Don't call my_thread_end() if the application is using MY_INIT() */
-  if (!org_my_init_done)
-    my_thread_end();
-#endif
   /* If library called my_init(), free memory allocated by it */
   if (!org_my_init_done)
     my_end(0);

mysql-test/r/subselect.result

@@ -1439,3 +1439,28 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	t3	ALL	NULL	NULL	NULL	NULL	3	Using where
 2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	4	Using temporary; Using filesort
 drop table t2, t3;
+CREATE TABLE `t1` ( `id` mediumint(9) NOT NULL auto_increment, `taskid` bigint(20) NOT NULL default '0', `dbid` int(11) NOT NULL default '0', `create_date` datetime NOT NULL default '0000-00-00 00:00:00', `last_update` datetime NOT NULL default '0000-00-00 00:00:00', PRIMARY KEY  (`id`)) TYPE=MyISAM CHARSET=latin1 AUTO_INCREMENT=3 ;
+INSERT INTO `t1` (`id`, `taskid`, `dbid`, `create_date`,`last_update`) VALUES (1, 1, 15, '2003-09-29 10:31:36', '2003-09-29 10:31:36'), (2, 1, 21, now(), now());
+CREATE TABLE `t2` (`db_id` int(11) NOT NULL auto_increment,`name` varchar(200) NOT NULL default '',`primary_uid` smallint(6) NOT NULL default '0',`secondary_uid` smallint(6) NOT NULL default '0',PRIMARY KEY  (`db_id`),UNIQUE KEY `name_2` (`name`),FULLTEXT KEY `name` (`name`)) TYPE=MyISAM CHARSET=latin1 AUTO_INCREMENT=2147483647;
+INSERT INTO `t2` (`db_id`, `name`, `primary_uid`, `secondary_uid`) VALUES (18, 'Not Set 1', 0, 0),(19, 'Valid', 1, 2),(20, 'Valid 2', 1, 2),(21, 'Should Not Return', 1, 2),(26, 'Not Set 2', 0, 0),(-1, 'ALL DB\'S', 0, 0);
+CREATE TABLE `t3` (`taskgenid` mediumint(9) NOT NULL auto_increment,`dbid` int(11) NOT NULL default '0',`taskid` int(11) NOT NULL default '0',`mon` tinyint(4) NOT NULL default '1',`tues` tinyint(4) NOT NULL default '1',`wed` tinyint(4) NOT NULL default '1',`thur` tinyint(4) NOT NULL default '1',`fri` tinyint(4) NOT NULL default '1',`sat` tinyint(4) NOT NULL default '0',`sun` tinyint(4) NOT NULL default '0',`how_often` smallint(6) NOT NULL default '1',`userid` smallint(6) NOT NULL default '0',`active` tinyint(4) NOT NULL default '1',PRIMARY KEY  (`taskgenid`)) TYPE=MyISAM CHARSET=latin1 AUTO_INCREMENT=2 ;
+INSERT INTO `t3` (`taskgenid`, `dbid`, `taskid`, `mon`, `tues`,`wed`, `thur`, `fri`, `sat`, `sun`, `how_often`, `userid`, `active`) VALUES (1,-1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 0, 1);
+CREATE TABLE `t4` (`task_id` smallint(6) NOT NULL default '0',`description` varchar(200) NOT NULL default '') TYPE=MyISAM CHARSET=latin1;
+INSERT INTO `t4` (`task_id`, `description`) VALUES (1, 'Daily Check List'),(2, 'Weekly Status');
+select  dbid, name, (date_format(now() , '%Y-%m-%d') - INTERVAL how_often DAY) >= ifnull((SELECT date_format(max(create_date),'%Y-%m-%d') FROM t1 WHERE dbid = b.db_id AND taskid = a.taskgenid), '1950-01-01') from t3 a, t2 b, t4  WHERE dbid = - 1 AND primary_uid = '1' AND t4.task_id = taskid;
+dbid	name	(date_format(now() , '%Y-%m-%d') - INTERVAL how_often DAY) >= ifnull((SELECT date_format(max(create_date),'%Y-%m-%d') FROM t1 WHERE dbid = b.db_id AND taskid = a.taskgenid), '1950-01-01')
+-1	Valid	1
+-1	Valid 2	1
+-1	Should Not Return	0
+SELECT dbid, name FROM t3 a, t2 b, t4 WHERE dbid = - 1 AND primary_uid = '1' AND ((date_format(now() , '%Y-%m-%d') - INTERVAL how_often DAY) >= ifnull((SELECT date_format(max(create_date),'%Y-%m-%d') FROM t1 WHERE dbid = b.db_id AND taskid = a.taskgenid), '1950-01-01')) AND t4.task_id = taskid;
+dbid	name
+-1	Valid
+-1	Valid 2
+drop table t1,t2,t3,t4;
+CREATE TABLE t1 (id int(11) default NULL) TYPE=MyISAM CHARSET=latin1;
+INSERT INTO t1 VALUES (1),(5);
+CREATE TABLE t2 (id int(11) default NULL) TYPE=MyISAM CHARSET=latin1;
+INSERT INTO t2 VALUES (2),(6);
+select * from t1 where (1,2,6) in (select * from t2);
+ERROR 21000: Operand should contain 3 column(s)
+DROP TABLE t1,t2;

mysql-test/t/subselect.test

@@ -965,3 +965,30 @@ insert into t2 values (2,2), (2,1), (3,3), (3,1);
 select * from t3 where a > all (select max(b) from t2 group by a);
 explain select * from t3 where a > all (select max(b) from t2 group by a);
 drop table t2, t3;
+
+#
+# correct used_tables()
+#
+
+CREATE TABLE `t1` ( `id` mediumint(9) NOT NULL auto_increment, `taskid` bigint(20) NOT NULL default '0', `dbid` int(11) NOT NULL default '0', `create_date` datetime NOT NULL default '0000-00-00 00:00:00', `last_update` datetime NOT NULL default '0000-00-00 00:00:00', PRIMARY KEY  (`id`)) TYPE=MyISAM CHARSET=latin1 AUTO_INCREMENT=3 ;
+INSERT INTO `t1` (`id`, `taskid`, `dbid`, `create_date`,`last_update`) VALUES (1, 1, 15, '2003-09-29 10:31:36', '2003-09-29 10:31:36'), (2, 1, 21, now(), now());
+CREATE TABLE `t2` (`db_id` int(11) NOT NULL auto_increment,`name` varchar(200) NOT NULL default '',`primary_uid` smallint(6) NOT NULL default '0',`secondary_uid` smallint(6) NOT NULL default '0',PRIMARY KEY  (`db_id`),UNIQUE KEY `name_2` (`name`),FULLTEXT KEY `name` (`name`)) TYPE=MyISAM CHARSET=latin1 AUTO_INCREMENT=2147483647;
+INSERT INTO `t2` (`db_id`, `name`, `primary_uid`, `secondary_uid`) VALUES (18, 'Not Set 1', 0, 0),(19, 'Valid', 1, 2),(20, 'Valid 2', 1, 2),(21, 'Should Not Return', 1, 2),(26, 'Not Set 2', 0, 0),(-1, 'ALL DB\'S', 0, 0);
+CREATE TABLE `t3` (`taskgenid` mediumint(9) NOT NULL auto_increment,`dbid` int(11) NOT NULL default '0',`taskid` int(11) NOT NULL default '0',`mon` tinyint(4) NOT NULL default '1',`tues` tinyint(4) NOT NULL default '1',`wed` tinyint(4) NOT NULL default '1',`thur` tinyint(4) NOT NULL default '1',`fri` tinyint(4) NOT NULL default '1',`sat` tinyint(4) NOT NULL default '0',`sun` tinyint(4) NOT NULL default '0',`how_often` smallint(6) NOT NULL default '1',`userid` smallint(6) NOT NULL default '0',`active` tinyint(4) NOT NULL default '1',PRIMARY KEY  (`taskgenid`)) TYPE=MyISAM CHARSET=latin1 AUTO_INCREMENT=2 ;
+INSERT INTO `t3` (`taskgenid`, `dbid`, `taskid`, `mon`, `tues`,`wed`, `thur`, `fri`, `sat`, `sun`, `how_often`, `userid`, `active`) VALUES (1,-1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 0, 1);
+CREATE TABLE `t4` (`task_id` smallint(6) NOT NULL default '0',`description` varchar(200) NOT NULL default '') TYPE=MyISAM CHARSET=latin1;
+INSERT INTO `t4` (`task_id`, `description`) VALUES (1, 'Daily Check List'),(2, 'Weekly Status');
+select  dbid, name, (date_format(now() , '%Y-%m-%d') - INTERVAL how_often DAY) >= ifnull((SELECT date_format(max(create_date),'%Y-%m-%d') FROM t1 WHERE dbid = b.db_id AND taskid = a.taskgenid), '1950-01-01') from t3 a, t2 b, t4  WHERE dbid = - 1 AND primary_uid = '1' AND t4.task_id = taskid;
+SELECT dbid, name FROM t3 a, t2 b, t4 WHERE dbid = - 1 AND primary_uid = '1' AND ((date_format(now() , '%Y-%m-%d') - INTERVAL how_often DAY) >= ifnull((SELECT date_format(max(create_date),'%Y-%m-%d') FROM t1 WHERE dbid = b.db_id AND taskid = a.taskgenid), '1950-01-01')) AND t4.task_id = taskid;
+drop table t1,t2,t3,t4;
+
+#
+# cardinality check
+#
+CREATE TABLE t1 (id int(11) default NULL) TYPE=MyISAM CHARSET=latin1;
+INSERT INTO t1 VALUES (1),(5);
+CREATE TABLE t2 (id int(11) default NULL) TYPE=MyISAM CHARSET=latin1;
+INSERT INTO t2 VALUES (2),(6);
+-- error 1240
+select * from t1 where (1,2,6) in (select * from t2);
+DROP TABLE t1,t2;

sql/derror.cc

@@ -20,27 +20,28 @@
 #include "mysql_priv.h"
 #include "mysys_err.h"
 
-static void read_texts(const char *file_name,const char ***point,
+static bool read_texts(const char *file_name,const char ***point,
 		       uint error_messages);
 static void init_myfunc_errs(void);
 
 	/* Read messages from errorfile */
 
-void init_errmessage(void)
+bool init_errmessage(void)
 {
   DBUG_ENTER("init_errmessage");
 
-  read_texts(ERRMSG_FILE,&my_errmsg[ERRMAPP],ER_ERROR_MESSAGES);
+  if (read_texts(ERRMSG_FILE,&my_errmsg[ERRMAPP],ER_ERROR_MESSAGES))
+    DBUG_RETURN(TRUE);
   errmesg=my_errmsg[ERRMAPP];		/* Init global variabel */
   init_myfunc_errs();			/* Init myfunc messages */
-  DBUG_VOID_RETURN;
+  DBUG_RETURN(FALSE);
 }
 
 
 	/* Read text from packed textfile in language-directory */
 	/* If we can't read messagefile then it's panic- we can't continue */
 
-static void read_texts(const char *file_name,const char ***point,
+static bool read_texts(const char *file_name,const char ***point,
 		       uint error_messages)
 {
   register uint i;
@@ -116,7 +117,7 @@ Check that the above file is the right version for this program!",
     point[i]= *point +uint2korr(head+10+i+i);
   }
   VOID(my_close(file,MYF(0)));
-  DBUG_VOID_RETURN;
+  DBUG_RETURN(FALSE);
 
 err:
   switch (funktpos) {

sql/init.cc

@@ -37,7 +37,9 @@ void unireg_init(ulong options)
 #ifdef USE_MY_ATOF
   init_my_atof();			/* use our atof */
 #endif
+#ifndef EMBEDDED_LIBRARY
   my_abort_hook=unireg_abort;		/* Abort with close of databases */
+#endif
 
   VOID(strmov(reg_ext,".frm"));
   for (i=0 ; i < 6 ; i++)		// YYMMDDHHMMSS

sql/item.cc

@@ -819,9 +819,11 @@ bool Item_field::fix_fields(THD *thd, TABLE_LIST *tables, Item **ref)
       // Prevent using outer fields in subselects, that is not supported now
       SELECT_LEX *cursel=(SELECT_LEX *) thd->lex.current_select;
       if (cursel->master_unit()->first_select()->linkage != DERIVED_TABLE_TYPE)
-	for (SELECT_LEX *sl= cursel->outer_select();
+      {
+	SELECT_LEX_UNIT *prev_unit= cursel->master_unit();
+	for (SELECT_LEX *sl= prev_unit->outer_select();
 	     sl;
-	     sl= sl->outer_select())
+	     sl= (prev_unit= sl->master_unit())->outer_select())
 	{
 	  table_list= (last= sl)->get_table_list();
 	  if (sl->resolve_mode == SELECT_LEX::INSERT_MODE && table_list)
@@ -829,19 +831,38 @@ bool Item_field::fix_fields(THD *thd, TABLE_LIST *tables, Item **ref)
 	    // it is primary INSERT st_select_lex => skip first table resolving
 	    table_list= table_list->next;
 	  }
+
+	  Item_subselect *prev_subselect_item= prev_unit->item;
 	  if ((tmp= find_field_in_tables(thd, this,
 					 table_list, &where,
 					 0)) != not_found_field)
+	  {
+	    prev_subselect_item->used_tables_cache|= tmp->table->map;
+	    prev_subselect_item->const_item_cache= 0;
 	    break;
+	  }
 	  if (sl->resolve_mode == SELECT_LEX::SELECT_MODE &&
 	      (refer= find_item_in_list(this, sl->item_list, &counter,
 					 REPORT_EXCEPT_NOT_FOUND)) !=
 	       (Item **) not_found_item)
+	  {
+	    if (*refer && (*refer)->fixed) // Avoid crash in case of error
+	    {
+	      prev_subselect_item->used_tables_cache|= (*refer)->used_tables();
+	      prev_subselect_item->const_item_cache&= (*refer)->const_item();
+	    }
 	    break;
+	  }
+
+	  // Reference is not found => depend from outer (or just error)
+	  prev_subselect_item->used_tables_cache|= OUTER_REF_TABLE_BIT;
+	  prev_subselect_item->const_item_cache= 0;
+
 	  if (sl->master_unit()->first_select()->linkage ==
 	      DERIVED_TABLE_TYPE)
 	    break; // do not look over derived table
 	}
+      }
       if (!tmp)
 	return -1;
       else if (!refer)
@@ -1360,7 +1381,8 @@ bool Item_ref::fix_fields(THD *thd,TABLE_LIST *tables, Item **reference)
   if (!ref)
   {
     TABLE_LIST *where= 0, *table_list;
-    SELECT_LEX *sl= thd->lex.current_select->outer_select();
+    SELECT_LEX_UNIT *prev_unit= thd->lex.current_select->master_unit();
+    SELECT_LEX *sl= prev_unit->outer_select();
     /*
       Finding only in current select will be performed for selects that have 
       not outer one and for derived tables (which not support using outer 
@@ -1388,15 +1410,23 @@ bool Item_ref::fix_fields(THD *thd,TABLE_LIST *tables, Item **reference)
 	cause error ER_NON_UNIQ_ERROR in find_item_in_list.
       */
       SELECT_LEX *last=0;
-      for ( ; sl ; sl= sl->outer_select())
+      for ( ; sl ; sl= (prev_unit= sl->master_unit())->outer_select())
       {
 	last= sl;
+	Item_subselect *prev_subselect_item= prev_unit->item;
 	if (sl->resolve_mode == SELECT_LEX::SELECT_MODE &&
 	    (ref= find_item_in_list(this, sl->item_list,
 				    &counter,
 				    REPORT_EXCEPT_NOT_FOUND)) !=
 	   (Item **)not_found_item)
+	{
+	  if (*ref && (*ref)->fixed) // Avoid crash in case of error
+	  {
+	    prev_subselect_item->used_tables_cache|= (*ref)->used_tables();
+	    prev_subselect_item->const_item_cache&= (*ref)->const_item();
+	  }
 	  break;
+	}
 	table_list= sl->get_table_list();
 	if (sl->resolve_mode == SELECT_LEX::INSERT_MODE && table_list)
 	{
@@ -1406,7 +1436,16 @@ bool Item_ref::fix_fields(THD *thd,TABLE_LIST *tables, Item **reference)
 	if ((tmp= find_field_in_tables(thd, this,
 				       table_list, &where,
 				       0)) != not_found_field)
+	{
+	  prev_subselect_item->used_tables_cache|= tmp->table->map;
+	  prev_subselect_item->const_item_cache= 0;
 	  break;
+	}
+
+	// Reference is not found => depend from outer (or just error)
+	prev_subselect_item->used_tables_cache|= OUTER_REF_TABLE_BIT;
+	prev_subselect_item->const_item_cache= 0;
+
 	if (sl->master_unit()->first_select()->linkage ==
 	    DERIVED_TABLE_TYPE)
 	  break; // do not look over derived table

sql/item_subselect.cc

@@ -36,7 +36,8 @@ inline Item * and_items(Item* cond, Item *item)
 
 Item_subselect::Item_subselect():
   Item_result_field(), engine_owner(1), value_assigned(0), substitution(0),
-  engine(0), have_to_be_excluded(0), engine_changed(0)
+  engine(0), used_tables_cache(0), have_to_be_excluded(0),
+  const_item_cache(1), engine_changed(0)
 {
   reset();
   /*
@@ -111,6 +112,11 @@ bool Item_subselect::fix_fields(THD *thd_param, TABLE_LIST *tables, Item **ref)
     }
     fix_length_and_dec();
   }
+  if (engine->uncacheable())
+  {
+    const_item_cache= 0;
+    used_tables_cache|= RAND_TABLE_BIT;
+  }
   fixed= 1;
   thd->where= save_where;
   return res;
@@ -146,10 +152,24 @@ void Item_subselect::fix_length_and_dec()
   engine->fix_length_and_dec(0);
 }
 
-inline table_map Item_subselect::used_tables() const
+table_map Item_subselect::used_tables() const
+{
+  return (table_map) (engine->dependent() ? used_tables_cache : 0L);
+}
+
+bool Item_subselect::const_item() const
 {
-  return (table_map) (engine->dependent() ? 1L :
-		      (engine->uncacheable() ? RAND_TABLE_BIT : 0L));
+  return const_item_cache;
+}
+
+void Item_subselect::update_used_tables()
+{
+  if (!engine->uncacheable())
+  {
+    // did all used tables become ststic?
+    if ((used_tables_cache & ~engine->upper_select_const_tables()))
+      const_item_cache= 1;
+  }
 }
 
 Item_singlerow_subselect::Item_singlerow_subselect(st_select_lex *select_lex)
@@ -494,6 +514,12 @@ Item_in_subselect::single_value_transformer(JOIN *join,
   THD *thd= join->thd;
   thd->where= "scalar IN/ALL/ANY subquery";
 
+  if (select_lex->item_list.elements > 1)
+  {
+    my_error(ER_OPERAND_COLUMNS, MYF(0), 1);
+    DBUG_RETURN(RES_ERROR);
+  }
+
   if ((abort_on_null || (upper_not && upper_not->top_level())) &&
       !select_lex->master_unit()->dependent &&
       (func == &Item_bool_func2::gt_creator ||
@@ -586,11 +612,6 @@ Item_in_subselect::single_value_transformer(JOIN *join,
 
   select_lex->dependent= 1;
   Item *item;
-  if (select_lex->item_list.elements > 1)
-  {
-    my_error(ER_OPERAND_COLUMNS, MYF(0), 1);
-    DBUG_RETURN(RES_ERROR);
-  }
 
   item= (Item*) select_lex->item_list.head();
 
@@ -690,6 +711,12 @@ Item_in_subselect::row_value_transformer(JOIN *join,
 
   SELECT_LEX *select_lex= join->select_lex;
 
+  if (select_lex->item_list.elements != left_expr->cols())
+  {
+    my_error(ER_OPERAND_COLUMNS, MYF(0), left_expr->cols());
+    DBUG_RETURN(RES_ERROR);
+  }
+
   if (!substitution)
   {
     //first call for this unit
@@ -1138,3 +1165,29 @@ void subselect_uniquesubquery_engine::exclude()
   //this never should be called
   DBUG_ASSERT(0);
 }
+
+
+table_map subselect_engine::calc_const_tables(TABLE_LIST *table)
+{
+  table_map map= 0;
+  for(; table; table= table->next)
+  {
+    TABLE *tbl= table->table;
+    if (tbl && tbl->const_table)
+      map|= tbl->map;
+  }
+  return map;
+}
+
+
+table_map subselect_single_select_engine::upper_select_const_tables()
+{
+  return calc_const_tables((TABLE_LIST *) select_lex->outer_select()->
+			   table_list.first);
+}
+
+table_map subselect_union_engine::upper_select_const_tables()
+{
+  return calc_const_tables((TABLE_LIST *) unit->outer_select()->
+			   table_list.first);
+}

sql/item_subselect.h

@@ -41,11 +41,15 @@ class Item_subselect :public Item_result_field
   /* substitution instead of subselect in case of optimization */
   Item *substitution;
   /* engine that perform execution of subselect (single select or union) */
-  subselect_engine *engine; 
+  subselect_engine *engine;
+  /* cache of used external tables */
+  table_map used_tables_cache; 
   /* allowed number of columns (1 for single value subqueries) */
   uint max_columns;
   /* work with 'substitution' */
   bool have_to_be_excluded;
+  /* cache of constante state */
+  bool const_item_cache;
 
 public:
   /* changed engine indicator */
@@ -85,6 +89,8 @@ class Item_subselect :public Item_result_field
   bool exec();
   virtual void fix_length_and_dec();
   table_map used_tables() const;
+  bool const_item() const;
+  void update_used_tables();
   void print(String *str)
   {
     if (name)
@@ -101,6 +107,8 @@ class Item_subselect :public Item_result_field
 
   friend class select_subselect;
   friend class Item_in_optimizer;
+  friend bool Item_field::fix_fields(THD *, TABLE_LIST *, Item **);
+  friend bool Item_ref::fix_fields(THD *, TABLE_LIST *, Item **);
 };
 
 /* single value subselect */
@@ -264,6 +272,8 @@ class subselect_engine: public Sql_alloc
   enum Item_result type() { return res_type; }
   virtual void exclude()= 0;
   bool may_be_null() { return maybe_null; };
+  virtual table_map upper_select_const_tables()= 0;
+  static table_map calc_const_tables(TABLE_LIST *);
 };
 
 
@@ -285,6 +295,7 @@ class subselect_single_select_engine: public subselect_engine
   bool dependent();
   bool uncacheable();
   void exclude();
+  table_map upper_select_const_tables();
 };
 
 
@@ -302,6 +313,7 @@ class subselect_union_engine: public subselect_engine
   bool dependent();
   bool uncacheable();
   void exclude();
+  table_map upper_select_const_tables();
 };
 
 
@@ -328,6 +340,7 @@ class subselect_uniquesubquery_engine: public subselect_engine
   bool dependent() { return 1; }
   bool uncacheable() { return 1; }
   void exclude();
+  table_map upper_select_const_tables() { return 0; }
 };
 
 

sql/mysql_priv.h

@@ -830,7 +830,7 @@ void key_restore(TABLE *form,byte *key,uint index,uint key_length);
 int key_cmp(TABLE *form,const byte *key,uint index,uint key_length);
 void key_unpack(String *to,TABLE *form,uint index);
 bool check_if_key_used(TABLE *table, uint idx, List<Item> &fields);
-void init_errmessage(void);
+bool init_errmessage(void);
 
 void sql_perror(const char *message);
 void sql_print_error(const char *format,...)
@@ -1042,7 +1042,11 @@ extern String *make_datetime(String *str, TIME *l_time,
 
 int test_if_number(char *str,int *res,bool allow_wildcards);
 void change_byte(byte *,uint,char,char);
+#ifndef EMBEDDED_LIBRARY
 extern "C" void unireg_abort(int exit_code);
+#else
+#define unireg_abort(exit_code) DBUG_RETURN(exit_code)
+#endif
 void init_read_record(READ_RECORD *info, THD *thd, TABLE *reg_form,
 		      SQL_SELECT *select,
 		      int use_record_cache, bool print_errors);

sql/mysqld.cc

@@ -851,6 +851,7 @@ extern "C" sig_handler print_signal_warning(int sig)
     (Mac OS X) we have to call exit() instead if pthread_exit().
 */
 
+#ifndef EMBEDDED_LIBRARY
 void unireg_end(void)
 {
   clean_up(1);
@@ -862,7 +863,6 @@ void unireg_end(void)
 #endif
 }
 
-
 extern "C" void unireg_abort(int exit_code)
 {
   DBUG_ENTER("unireg_abort");
@@ -874,7 +874,7 @@ extern "C" void unireg_abort(int exit_code)
   my_end(opt_endinfo ? MY_CHECK_ERROR | MY_GIVE_INFO : 0);
   exit(exit_code); /* purecov: inspected */
 }
-
+#endif
 
 void clean_up(bool print_message)
 {
@@ -1024,6 +1024,7 @@ static void set_ports()
   }
 }
 
+#ifndef EMBEDDED_LIBRARY
 /* Change to run as another user if started with --user */
 
 static void set_user(const char *user)
@@ -1106,7 +1107,6 @@ static void set_root(const char *path)
 #endif
 }
 
-
 static void server_init(void)
 {
   struct sockaddr_in	IPaddr;
@@ -1257,6 +1257,7 @@ static void server_init(void)
   DBUG_VOID_RETURN;
 }
 
+#endif /*!EMBEDDED_LIBRARY*/
 
 void yyerror(const char *s)
 {
@@ -2120,7 +2121,8 @@ static int init_common_variables(const char *conf_file_name, int argc,
   open_files_limit= 0;		/* Can't set or detect limit */
 #endif
   unireg_init(opt_specialflag); /* Set up extern variabels */
-  init_errmessage();		/* Read error messages from file */
+  if (init_errmessage())	/* Read error messages from file */
+    return 1;
   init_client_errs();
   lex_init();
   item_init();
@@ -2233,6 +2235,7 @@ static void init_ssl()
 
 static int init_server_components()
 {
+  DBUG_ENTER("init_server_components");
   table_cache_init();
   hostname_cache_init();
   query_cache_result_size_limit(query_cache_limit);
@@ -2324,7 +2327,7 @@ Now disabling --log-slave-updates.");
 
   init_max_user_conn();
   init_update_queries();
-  return 0;
+  DBUG_RETURN(0);
 }
 
 
@@ -5604,8 +5607,10 @@ static void get_options(int argc,char **argv)
   /* Set global MyISAM variables from delay_key_write_options */
   fix_delay_key_write((THD*) 0, OPT_GLOBAL);
 
+#ifndef EMBEDDED_LIBRARY
   if (mysqld_chroot)
     set_root(mysqld_chroot);
+#endif
   fix_paths();
 
   /*