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A fix and a test case for Bug#15392 "Server crashes during

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prepared statement execute
This commit is contained in:
konstantin@mysql.com 2005-12-07 00:57:15 +03:00
parent adc8051c71
commit 712385568f
3 changed files with 96 additions and 10 deletions
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39
mysql-test/r/sp.result
View file

@ -4153,4 +4153,43 @@ A local variable in a nested compound statement takes precedence over table colu
a - local variable in a nested compound statement
A local variable in a nested compound statement takes precedence over table column in cursors
a - local variable in a nested compound statement
drop schema if exists mysqltest1|
Warnings:
Note 1008 Can't drop database 'mysqltest1'; database doesn't exist
drop schema if exists mysqltest2|
Warnings:
Note 1008 Can't drop database 'mysqltest2'; database doesn't exist
drop schema if exists mysqltest3|
Warnings:
Note 1008 Can't drop database 'mysqltest3'; database doesn't exist
create schema mysqltest1|
create schema mysqltest2|
create schema mysqltest3|
use mysqltest3|
create procedure mysqltest1.p1 (out prequestid varchar(100))
begin
call mysqltest2.p2('call mysqltest3.p3(1, 2)');
end|
create procedure mysqltest2.p2(in psql text)
begin
declare lsql text;
set @lsql= psql;
prepare lstatement from @lsql;
execute lstatement;
deallocate prepare lstatement;
end|
create procedure mysqltest3.p3(in p1 int)
begin
select p1;
end|
call mysqltest1.p1(@rs)|
ERROR 42000: Incorrect number of arguments for PROCEDURE mysqltest3.p3; expected 1, got 2
call mysqltest1.p1(@rs)|
ERROR 42000: Incorrect number of arguments for PROCEDURE mysqltest3.p3; expected 1, got 2
call mysqltest1.p1(@rs)|
ERROR 42000: Incorrect number of arguments for PROCEDURE mysqltest3.p3; expected 1, got 2
drop schema if exists mysqltest1|
drop schema if exists mysqltest2|
drop schema if exists mysqltest3|
use test|
drop table t1,t2;

46
mysql-test/t/sp.test
View file

@ -4947,6 +4947,52 @@ begin
end|
call p1("a - stored procedure parameter")|
#
# A test case for Bug#15392 "Server crashes during prepared statement
# execute": make sure that stored procedure check for error conditions
# properly and do not continue execution if an error has been set.
#
# It's necessary to use several DBs because in the original code
# the successful return of mysql_change_db overrode the error from
# execution.
drop schema if exists mysqltest1|
drop schema if exists mysqltest2|
drop schema if exists mysqltest3|
create schema mysqltest1|
create schema mysqltest2|
create schema mysqltest3|
use mysqltest3|
create procedure mysqltest1.p1 (out prequestid varchar(100))
begin
call mysqltest2.p2('call mysqltest3.p3(1, 2)');
end|
create procedure mysqltest2.p2(in psql text)
begin
declare lsql text;
set @lsql= psql;
prepare lstatement from @lsql;
execute lstatement;
deallocate prepare lstatement;
end|
create procedure mysqltest3.p3(in p1 int)
begin
select p1;
end|
--error ER_SP_WRONG_NO_OF_ARGS
call mysqltest1.p1(@rs)|
--error ER_SP_WRONG_NO_OF_ARGS
call mysqltest1.p1(@rs)|
--error ER_SP_WRONG_NO_OF_ARGS
call mysqltest1.p1(@rs)|
drop schema if exists mysqltest1|
drop schema if exists mysqltest2|
drop schema if exists mysqltest3|
use test|
#
# BUG#NNNN: New bug synopsis
#

21
sql/sp_head.cc
View file

@ -1137,10 +1137,12 @@ int sp_head::execute(THD *thd)
original thd->db will then have been freed */
if (dbchanged)
{
/* No access check when changing back to where we came from.
(It would generate an error from mysql_change_db() when olddb=="") */
/*
No access check when changing back to where we came from.
(It would generate an error from mysql_change_db() when olddb=="")
*/
if (! thd->killed)
ret= mysql_change_db(thd, olddb, 1);
ret|= (int) mysql_change_db(thd, olddb, 1);
}
m_flags&= ~IS_INVOKED;
DBUG_PRINT("info", ("first free for 0x%lx --: 0x%lx->0x%lx, level: %lu, flags %x",
@ -1519,13 +1521,12 @@ int sp_head::execute_procedure(THD *thd, List<Item> *args)
suv= new Item_func_set_user_var(guv->get_name(), item);
/*
we do not check suv->fixed, because it can't be fixed after
creation
Item_func_set_user_var is not fixed after construction,
call fix_fields().
*/
suv->fix_fields(thd, &item);
suv->fix_length_and_dec();
suv->check();
suv->update();
if ((ret= test(!suv || suv->fix_fields(thd, &item) ||
suv->check() || suv->update())))
break;
}
}
}
@ -2097,7 +2098,7 @@ sp_lex_keeper::reset_lex_and_exec_core(THD *thd, uint *nextp,
cleanup_items() is called in sp_head::execute()
*/
return res;
return res || thd->net.report_error;
}