Fix buildbot failure in rpl_stop_slave.test.

Problem was setting DEBUG_SYNC twice in a row too fast in the test case; this
could cause the second setting to override the first before the code had time
to react to the first, causing the signal to get lost.

Fixed by waiting for the code to receive the first signal before overwriting
it in the test case.

1 files changed, 5 insertions, 0 deletions

diff --git a/sql/sql_repl.cc b/sql/sql_repl.cc
index 418c2985f85..5038d02abca 100644
--- a/sql/sql_repl.cc
+++ b/sql/sql_repl.cc
@@ -571,6 +571,11 @@ impossible position";
                           DBUG_ASSERT(opt_debug_sync_timeout > 0);
                           DBUG_ASSERT(!debug_sync_set_action(current_thd,
                                                              STRING_WITH_LEN(act)));
+                          const char act2[]=
+                            "now "
+                            "signal signal.continued";
+                          DBUG_ASSERT(!debug_sync_set_action(current_thd,
+                                                             STRING_WITH_LEN(act2)));
                         }
                       });