=== modified file 'mysql-test/suite/backup/t/backup_myisam.test'
--- mysql-test/suite/backup/t/backup_myisam.test	2008-12-30 12:13:31 +0000
+++ mysql-test/suite/backup/t/backup_myisam.test	2009-02-06 08:57:18 +0000
@@ -2,8 +2,14 @@
 # Tests with MyISAM native driver.
 #
 
+--source include/have_debug_sync.inc
 --source include/not_embedded.inc
 
+connect(con1, localhost, root,,);
+connect(con2, localhost, root,,);
+
+connection default;
+
 #
 # Precautionary cleanup
 #
@@ -36,9 +42,24 @@
 --replace_column 1 #
 BACKUP DATABASE mysql_db1 to 'bup_myisam.bak';
 --replace_column 1 #
-RESTORE FROM 'bup_myisam.bak' OVERWRITE;
+
+SET DEBUG_SYNC= 'after_restore_locks_tables SIGNAL wait_for_restore WAIT_FOR finish';
+send RESTORE FROM 'bup_myisam.bak' OVERWRITE;
+
+connection con1;
+SET DEBUG_SYNC= 'now WAIT_FOR wait_for_restore';
+send SELECT COUNT(*) FROM mysql_db1.t1 WHERE c2 < 5;
+
+connection con2;
+SET DEBUG_SYNC= 'now SIGNAL finish';
+
+connection default;
+reap;
+
+connection con1;
+reap;
+
 #
-SELECT COUNT(*) FROM mysql_db1.t1 WHERE c2 < 5;
 #
 # Cleanup
 #

=== modified file 'sql/backup/kernel.cc'
--- sql/backup/kernel.cc	2009-02-03 07:48:09 +0000
+++ sql/backup/kernel.cc	2009-02-06 09:13:32 +0000
@@ -1324,10 +1324,14 @@
   close_thread_tables(m_thd);                   // Never errors
   m_thd->stmt_da->reset_diagnostics_area();     // Never errors
 
+  DEBUG_SYNC(m_thd, "before_restore_locks_tables");
+
   err= lock_tables_for_restore();               // logs errors
   if (err)
     DBUG_RETURN(fatal_error(err));
 
+  DEBUG_SYNC(m_thd, "after_restore_locks_tables");
+
   /* 
    Here restore drivers are created to restore table data. Data is being
    (potentially) changed so we set m_data_changed flag.