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Bug#36443 Server crashes when executing insert when insert trigger on table

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The crash appeared to be a result of allocating an instance of Discrete_interval 
      automatically that that was referred in out-of-declaration scope.
                        
      Fixed with correcting backing up and restoring scheme of
      auto_inc_intervals_forced, introduced by bug#33029, by means of shallow copying;
      added simulation code that forces executing those fixes of the former bug that
      targeted at master-and-slave having incompatible bug#33029-prone versions.

mysql-test/suite/bugs/r/rpl_bug33029.result:
  new results file
mysql-test/suite/bugs/t/rpl_bug33029.test:
  test merely checks no crash happens on slave.
sql/slave.cc:
  forcing to execute special logics implemented for bug#33029 if
  simulate_bug33029 the debug option is set.
sql/sql_class.cc:
  swaps of backed and the actual auto_inc_intervals_forced basing on shallow coping.
sql/structs.h:
  Removing the deep _copy() and methods associated with it;
  adding methods to Discrete_intervals_list:
      
  private `=', copy constructor to prevent using;
  private set_members();
  public  copy_shallow(), swap(), get_{head, tail, current}();
          empty_no_free() through set_members().
This commit is contained in:
Andrei Elkin
2008-06-19 21:47:59 +03:00
parent 0a68dd1d3f
commit e66ba2a74b
5 changed files with 77 additions and 25 deletions
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15
mysql-test/suite/bugs/r/rpl_bug33029.result Normal file
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stop slave;
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
reset master;
reset slave;
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
start slave;
create table `t1` (`id` int not null auto_increment primary key);
create trigger `trg` before insert on `t1` for each row begin end;
set @@global.debug="+d,simulate_bug33029";
stop slave;
start slave;
insert into `t1` values ();
select * from t1;
id
1

25
mysql-test/suite/bugs/t/rpl_bug33029.test Normal file
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#
# Bug #36443 Server crashes when executing insert when insert trigger on table
#
# Emulating the former bug#33029 situation to see that there is no crash anymore.
#
source include/master-slave.inc;
create table `t1` (`id` int not null auto_increment primary key);
create trigger `trg` before insert on `t1` for each row begin end;
sync_slave_with_master;
set @@global.debug="+d,simulate_bug33029";
stop slave;
start slave;
connection master;
insert into `t1` values ();
sync_slave_with_master;
select * from t1;