Merge 10.0 into 10.1

mysql-test/t/ps.test

@@ -3860,4 +3860,19 @@ deallocate prepare stmt;
 drop view v1,v2,v3;
 drop table t1,t2,t3;
 
+--echo #
+--echo # MDEV-10657: incorrect result returned with binary protocol
+--echo # (prepared statements)
+--echo #
+
+create table  t1 (code varchar(10) primary key);
+INSERT INTO t1(code) VALUES ('LINE1'), ('LINE2'), ('LINE3');
+SELECT X.*
+FROM
+ (SELECT CODE, RN
+   FROM
+     (SELECT A.CODE, @cnt := @cnt + 1 AS RN
+       FROM  t1 A, (SELECT @cnt := 0) C) T
+  ) X;
+drop table t1;
 --echo # End of 5.5 tests