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Bug#21136 CREATE TABLE SELECT within CREATE TABLE SELECT causes server crash

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When CREATE TEMPORARY TABLE .. SELECT is invoked from a stored function
which in turn is called from CREATE TABLE SELECT causes a memory leak
because the inner create temporary table overrides the outter extra_lock
reference when locking the table.

The solution is to simply not overrride the extra_lock by only using the
extra_lock for a non-temporary table lock.
This commit is contained in:
davi@moksha.local
2007-09-28 18:25:47 -03:00
parent 2a70d6fa97
commit ae079ec427
3 changed files with 59 additions and 7 deletions
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14
mysql-test/r/create.result
View File

@ -1691,4 +1691,18 @@ ERROR 42000: Identifier name 'очень_очень_очень_очень_оче
drop view имя_вью_кодировке_утф8_длиной_больше_чем_42;
drop table имя_таблицы_в_кодировке_утф8_длиной_больше_чем_48;
set names default;
drop table if exists t1,t2,t3;
drop function if exists f1;
create function f1() returns int
begin
declare res int;
create temporary table t3 select 1 i;
set res:= (select count(*) from t1);
drop temporary table t3;
return res;
end|
create table t1 as select 1;
create table t2 as select f1() from t1;
drop table t1,t2;
drop function f1;
End of 5.1 tests

25
mysql-test/t/create.test
View File

@ -1303,4 +1303,29 @@ return 0;
drop view имя_вью_кодировке_утф8_длиной_больше_чем_42;
drop table имя_таблицы_в_кодировке_утф8_длиной_больше_чем_48;
set names default;
#
# Bug#21136 CREATE TABLE SELECT within CREATE TABLE SELECT causes server crash
#
--disable_warnings
drop table if exists t1,t2,t3;
drop function if exists f1;
--enable_warnings
--delimiter |
create function f1() returns int
begin
declare res int;
create temporary table t3 select 1 i;
set res:= (select count(*) from t1);
drop temporary table t3;
return res;
end|
--delimiter ;
create table t1 as select 1;
create table t2 as select f1() from t1;
drop table t1,t2;
drop function f1;
--echo End of 5.1 tests