bzr commit into mysql-5.1 branch (ramil:2692) Bug#38269

[Ramil Kalimullin]

#At file:///home/ram/mysql/b38269.5.1/

 2692 Ramil Kalimullin	2008-10-07
      Fix for bug#38269: pushbuild gives valgrind error in 
      ha_statistic_increment for rpl_temporary
      
      Problem: in some cases master send a special event to reconnecting
      slave to keep slave's temporary tables (see #17284) and they still 
      have references to the "old" SQL slave thread and use them to access
      thread's data.
      
      Fix: set temporary tables thread references to the actual SQL slave
      thread in such cases.
modified:
  mysql-test/suite/rpl/t/disabled.def
  sql/log_event.cc

per-file messages:
  mysql-test/suite/rpl/t/disabled.def
    Fix for bug#38269: pushbuild gives valgrind error in 
    ha_statistic_increment for rpl_temporary
      - rpl_temporary test enabled.
  sql/log_event.cc
    Fix for bug#38269: pushbuild gives valgrind error in 
    ha_statistic_increment for rpl_temporary
      - if we keep slave's temporary tables after reconnect,
    set their thread pointers (->in_use) to the current SQL thread.
=== modified file 'mysql-test/suite/rpl/t/disabled.def'
--- a/mysql-test/suite/rpl/t/disabled.def	2008-07-23 14:34:02 +0000
+++ b/mysql-test/suite/rpl/t/disabled.def	2008-10-07 11:06:10 +0000
@@ -12,5 +12,4 @@
 
 rpl_redirect               : Failure is sporadic and and the test is superfluous (mats)
 rpl_innodb_bug28430        : Failure on Solaris Bug #36793
-rpl_temporary              : BUG#38269 2008-07-21 Sven valgrind error in pushbuild
 rpl_flushlog_loop          : BUG#37733 2008-07-23 Sven disabled in 5.1-bugteam. the bug
has been fixed in 5.1-rpl: please re-enable when that gets pushed to main

=== modified file 'sql/log_event.cc'
--- a/sql/log_event.cc	2008-10-03 07:36:22 +0000
+++ b/sql/log_event.cc	2008-10-07 11:06:10 +0000
@@ -3350,6 +3350,17 @@ int Start_log_event_v3::do_apply_event(R
       close_temporary_tables(thd);
       cleanup_load_tmpdir();
     }
+    else
+    {
+       /*
+         Set all temporary tables thread references to the current thread
+         as they may point to the "old" SQL slave thread in case of its
+         restart.
+       */
+       TABLE *table;
+       for (table= thd->temporary_tables; table; table= table->next)
+         table->in_use= thd;
+    }
     break;
 
     /*