diff --git a/mysql-test/include/not_binlog_format_row.inc b/mysql-test/include/not_binlog_format_row.inc
new file mode 100644
index 00000000000..f9354e7cd33
--- /dev/null
+++ b/mysql-test/include/not_binlog_format_row.inc
@@ -0,0 +1,4 @@
+if (`SELECT @@binlog_format = 'ROW'`)
+{
+     skip Test cannot run with binlog_format row;
+}
diff --git a/mysql-test/lib/My/ConfigFactory.pm b/mysql-test/lib/My/ConfigFactory.pm
index c4d68e7127c..41b595c80e8 100644
--- a/mysql-test/lib/My/ConfigFactory.pm
+++ b/mysql-test/lib/My/ConfigFactory.pm
@@ -357,11 +357,14 @@ sub post_check_client_group {
   
   if (IS_WINDOWS)
   {
-    # Shared memory base may or may not be defined (e.g not defined in embedded)
-    my $shm = $group_to_copy_from->option("shared-memory-base-name");
-    if (defined $shm)
+    if (! $self->{ARGS}->{embedded})
     {
-      $config->insert($client_group_name,"shared-memory-base-name", $shm->value());
+      # Shared memory base may or may not be defined (e.g not defined in embedded)
+      my $shm = $group_to_copy_from->option("shared-memory-base-name");
+      if (defined $shm)
+      {
+        $config->insert($client_group_name,"shared-memory-base-name", $shm->value());
+      }
     }
   }
 }
diff --git a/mysql-test/r/bug39022.result b/mysql-test/r/bug39022.result
index 1c02d7873e4..5963709aa2a 100644
--- a/mysql-test/r/bug39022.result
+++ b/mysql-test/r/bug39022.result
@@ -28,5 +28,5 @@ SELECT d FROM t2,t1 WHERE d=(SELECT MAX(a) FROM t1 WHERE t1.a > t2.d);
 ERROR 40001: Deadlock found when trying to get lock; try restarting transaction
 # in thread2
 d
-# in default
+# in thread1;
 DROP TABLE t1,t2;
diff --git a/mysql-test/r/func_gconcat.result b/mysql-test/r/func_gconcat.result
index 3b78851a1b9..8d1fcade88d 100644
--- a/mysql-test/r/func_gconcat.result
+++ b/mysql-test/r/func_gconcat.result
@@ -978,4 +978,21 @@ GROUP BY t1.a
 1
 1
 DROP TABLE t1, t2;
+CREATE TABLE t1 (f1 INT);
+INSERT INTO t1 VALUES (),();
+EXPLAIN EXTENDED SELECT 1 FROM
+(SELECT DISTINCT GROUP_CONCAT(td.f1) FROM t1,t1 AS td GROUP BY td.f1) AS d,t1;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	<derived2>	system	NULL	NULL	NULL	NULL	1	100.00	
+1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	100.00	
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	2	100.00	Using temporary; Using filesort; Distinct
+2	DERIVED	td	ALL	NULL	NULL	NULL	NULL	2	100.00	Distinct; Using join buffer
+Warnings:
+Note	1003	select 1 AS `1` from (select distinct group_concat(`test`.`td`.`f1` separator ',') AS `GROUP_CONCAT(td.f1)` from `test`.`t1` join `test`.`t1` `td` group by `test`.`td`.`f1`) `d` join `test`.`t1`
+SELECT 1 FROM
+(SELECT DISTINCT GROUP_CONCAT(td.f1) FROM t1,t1 AS td GROUP BY td.f1) AS d,t1;
+1
+1
+1
+DROP TABLE t1;
 End of 5.0 tests
diff --git a/mysql-test/t/bug39022.test b/mysql-test/t/bug39022.test
index 1a1d10f5592..268b207e0e5 100644
--- a/mysql-test/t/bug39022.test
+++ b/mysql-test/t/bug39022.test
@@ -1,5 +1,6 @@
 -- source include/have_log_bin.inc
 -- source include/have_innodb.inc
+-- source include/not_binlog_format_row.inc
 
 --echo #
 --echo # Bug #39022: Mysql randomly crashing in lock_sec_rec_cons_read_sees
@@ -49,10 +50,14 @@ connection thread2;
 --echo # in thread2
 REAP;
 
-connection default;
---echo # in default
-
-disconnect thread1;
 disconnect thread2;
+--source include/wait_until_disconnected.inc
+
+connection thread1;
+--echo # in thread1;
+disconnect thread1;
+--source include/wait_until_disconnected.inc
+
+connection default;
 
 DROP TABLE t1,t2;
diff --git a/mysql-test/t/func_gconcat.test b/mysql-test/t/func_gconcat.test
index e92f3e96303..cfb4cdc9ecd 100644
--- a/mysql-test/t/func_gconcat.test
+++ b/mysql-test/t/func_gconcat.test
@@ -693,4 +693,19 @@ SELECT 1 FROM t1 WHERE t1.a NOT IN
 
 DROP TABLE t1, t2;
 
+#
+# Bug #49487: crash with explain extended and group_concat in a derived table
+#
+
+CREATE TABLE t1 (f1 INT);
+INSERT INTO t1 VALUES (),();
+
+EXPLAIN EXTENDED SELECT 1 FROM
+ (SELECT DISTINCT GROUP_CONCAT(td.f1) FROM t1,t1 AS td GROUP BY td.f1) AS d,t1;
+
+SELECT 1 FROM
+ (SELECT DISTINCT GROUP_CONCAT(td.f1) FROM t1,t1 AS td GROUP BY td.f1) AS d,t1;
+
+DROP TABLE t1;
+
 --echo End of 5.0 tests
diff --git a/sql/item_sum.cc b/sql/item_sum.cc
index 4ab8e75ddf5..142e90639e8 100644
--- a/sql/item_sum.cc
+++ b/sql/item_sum.cc
@@ -3402,6 +3402,8 @@ String* Item_func_group_concat::val_str(String* str)
 
 void Item_func_group_concat::print(String *str, enum_query_type query_type)
 {
+  /* orig_args is not filled with valid values until fix_fields() */
+  Item **pargs= fixed ? orig_args : args;
   str->append(STRING_WITH_LEN("group_concat("));
   if (distinct)
     str->append(STRING_WITH_LEN("distinct "));
@@ -3409,7 +3411,7 @@ void Item_func_group_concat::print(String *str, enum_query_type query_type)
   {
     if (i)
       str->append(',');
-    args[i]->print(str, query_type);
+    pargs[i]->print(str, query_type);
   }
   if (arg_count_order)
   {