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MDEV-23094: Multiple calls to a Stored Procedure from another Stored Procedure crashes server

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Added system-SELECT to IF/WHILE/REPET/FOR for correct subqueries connecting.

Added control of system/usual selects for correct error detection.
This commit is contained in:
Oleksandr Byelkin
2020-08-11 16:37:48 +02:00
parent 571764c04f
commit 0f080dd60a
11 changed files with 601 additions and 30 deletions
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97
mysql-test/main/parser.test
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@ -1696,4 +1696,101 @@ KILL ( SELECT 1 ) + LASTVAL(s);
--error ER_SUBQUERIES_NOT_SUPPORTED
KILL LASTVAL(s);
--echo #
--echo # MDEV-23094: Multiple calls to a Stored Procedure from another
--echo # Stored Procedure crashes server
--echo #
create table t1 (id1 int primary key, data1 int);
create table t2 (id2 int primary key, data2 int);
delimiter //;
create procedure p1(IN id int, IN dt int)
begin
if (exists(select * from t1 where id1 = id and data1 = dt) or
not exists (select * from t2 where id2 = id and data2 = dt))
then
select 1;
end if;
end //
delimiter ;//
call p1(1,2);
call p1(1,2);
drop procedure p1;
delimiter //;
create procedure p1(IN id int, IN dt int)
begin
case (exists(select * from t1 where id1 = id and data1 = dt) or
not exists (select * from t2 where id2 = id and data2 = dt))
when 1 then
select 1;
else
select 0;
end case;
end //
delimiter ;//
call p1(1,2);
call p1(1,2);
drop procedure p1;
delimiter //;
create procedure p1(IN id int, IN dt int)
begin
declare wcont int default 1;
while (exists(select * from t1 where id1 = id and data1 = dt) or
not exists (select * from t2 where id2 = id and data2 = dt)) and wcont
do
select 1;
set wcont=0;
end while;
end //
delimiter ;//
call p1(1,2);
call p1(1,2);
drop procedure p1;
delimiter //;
create procedure p1(IN id int, IN dt int)
begin
declare count int default 1;
repeat
select 1;
set count=count+1;
until (exists(select * from t1 where id1 = id and data1 = dt) or
not exists (select * from t2 where id2 = id and data2 = dt)) and
count < 3
end repeat;
end //
delimiter ;//
call p1(1,2);
call p1(1,2);
drop procedure p1;
delimiter //;
create procedure p1(IN id int, IN dt int)
begin
for i in 1..(exists(select * from t1 where id1 = id and data1 = dt) or
not exists (select * from t2 where id2 = id and data2 = dt))
do
select 1;
end for;
end //
delimiter ;//
call p1(1,2);
call p1(1,2);
drop procedure p1;
drop table t1,t2;
--echo # End of 10.4 tests