From 40bfd20180a392f0c2e56cc99fff9ab3bf3ef87f Mon Sep 17 00:00:00 2001
From: Nirbhay Choubey <nirbhay@skysql.com>
Date: Wed, 9 Jul 2014 11:04:28 -0400
Subject: MDEV#6411 - Setting set @@global_wsrep_sst_auth=NULL causes crash

Fixed by properly handling the NULL values.
---
 mysql-test/suite/wsrep/t/variables.test | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'mysql-test/suite/wsrep/t/variables.test')

diff --git a/mysql-test/suite/wsrep/t/variables.test b/mysql-test/suite/wsrep/t/variables.test
index 59d2aeccafd..a79a99bfecc 100644
--- a/mysql-test/suite/wsrep/t/variables.test
+++ b/mysql-test/suite/wsrep/t/variables.test
@@ -19,6 +19,7 @@ SET GLOBAL wsrep_replicate_myisam= ON;
 
 # Reset it back.
 SET GLOBAL wsrep_replicate_myisam= OFF;
+SET GLOBAL wsrep_provider=none;
 
 --echo
 --echo #
@@ -26,6 +27,11 @@ SET GLOBAL wsrep_replicate_myisam= OFF;
 --echo #
 call mtr.add_suppression("safe_mutex: Found wrong usage of mutex 'LOCK_wsrep_slave_threads' and 'LOCK_global_system_variables'");
 call mtr.add_suppression("WSREP: Failed to get provider options");
+
+--disable_query_log
+eval SET GLOBAL wsrep_provider= '$WSREP_PROVIDER';
+--enable_query_log
+
 --replace_regex /.*libgalera_smm.*/libgalera_smm.so/
 SELECT @@global.wsrep_provider;
 SELECT @@global.wsrep_slave_threads;
@@ -71,5 +77,17 @@ SET GLOBAL wsrep_provider= none;
 SET GLOBAL wsrep_cluster_address= '';
 SET GLOBAL wsrep_provider_options= '';
 
+--echo #
+--echo # MDEV#6411: Setting set @@global.wsrep_sst_auth=NULL causes crash
+--echo #
+SET @wsrep_sst_auth_saved= @@global.wsrep_sst_auth;
+SET @@global.wsrep_sst_auth= 'user:pass';
+SELECT @@global.wsrep_sst_auth;
+SET @@global.wsrep_sst_auth= '';
+SELECT @@global.wsrep_sst_auth;
+SET @@global.wsrep_sst_auth= NULL;
+SELECT @@global.wsrep_sst_auth;
+SET @@global.wsrep_sst_auth= @wsrep_sst_auth_saved;
+
 --echo # End of test.
 
-- 
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