Merge bk-internal.mysql.com:/home/bk/mysql-5.0

into  mysql.com:/home/dlenev/src/mysql-5.0-bg16829


mysql-test/r/trigger.result:
  Auto merged
mysql-test/t/trigger.test:
  Auto merged

mysql-test/r/trigger.result

@@ -785,3 +785,8 @@ create trigger test.t1_bi before insert on t1 for each row set @a:=0;
 ERROR 3D000: No database selected
 drop trigger t1_bi;
 ERROR 3D000: No database selected
+create table t1 (i int);
+create trigger t1_bi before insert on t1 for each row return 0;
+ERROR 42000: RETURN is only allowed in a FUNCTION
+insert into t1 values (1);
+drop table t1;

mysql-test/t/trigger.test

@@ -958,3 +958,12 @@ create trigger test.t1_bi before insert on t1 for each row set @a:=0;
 --error ER_NO_DB_ERROR
 drop trigger t1_bi;
 connection default;
+
+# Test for bug #16829 "Firing trigger with RETURN crashes the server"
+# RETURN is not supposed to be used anywhere except functions, so error
+# should be returned when one attempts to create trigger with RETURN.
+create table t1 (i int);
+--error ER_SP_BADRETURN
+create trigger t1_bi before insert on t1 for each row return 0;
+insert into t1 values (1);
+drop table t1;

sql/sql_yacc.yy

@@ -1981,7 +1981,7 @@ sp_proc_stmt:
 	    LEX *lex= Lex;
 	    sp_head *sp= lex->sphead;
 
-	    if (sp->m_type == TYPE_ENUM_PROCEDURE)
+	    if (sp->m_type != TYPE_ENUM_FUNCTION)
 	    {
 	      my_message(ER_SP_BADRETURN, ER(ER_SP_BADRETURN), MYF(0));
 	      YYABORT;