Comment 4 for bug 1287299

Easy to reproduce on recent 5.6.16 non-debug build:

main.percona_log_slow_query_plan w6 [ fail ]
        Test ended at 2014-03-04 10:26:59

CURRENT_TEST: main.percona_log_slow_query_plan
--- /home/openxs/bzr2/percona-5.6/mysql-test/r/percona_log_slow_query_plan.result 2014-01-28 14:08:51.545140000 +0300
+++ /home/openxs/bzr2/percona-5.6/mysql-test/var/6/log/percona_log_slow_query_plan.reject 2014-03-04 11:26:58.937385033 +0300
@@ -83,10 +83,10 @@
 SELECT * FROM t2 ORDER BY a;
 [log_stop.inc] percona_slow_query_log.query_plan_3
 [log_grep.inc] file: percona_slow_query_log.query_plan_3 pattern: ^# Filesort: Yes Filesort_on_disk: Yes Merge_passes: 6$
-[log_grep.inc] lines: 1
+[log_grep.inc] lines: 0
 SHOW SESSION STATUS LIKE 'Sort_merge_passes';
 Variable_name Value
-Sort_merge_passes 8
+Sort_merge_passes 6
 SET SESSION sort_buffer_size=default;
 SHOW SESSION STATUS LIKE 'Select_scan';
 Variable_name Value

mysqltest: Result content mismatch

 - saving '/home/openxs/bzr2/percona-5.6/mysql-test/var/6/log/main.percona_log_slow_query_plan/' to '/home/openxs/bzr2/percona-5.6/mysql-test/var/log/main.percona_log_slow_query_plan/'

Only 19 of 45 completed.
mysql-test-run: *** ERROR: Not all tests completed