select.test, select.result:

  Added a test case for bug #10084.
sql_yacc.yy:
  Fixed bug #10084: STRAIGHT_JOIN for expressions with ON was
  added.

mysql-test/r/select.result

@@ -2682,3 +2682,20 @@ AND FK_firma_id = 2;
 COUNT(*)
 0
 drop table t1;
+CREATE TABLE t1 (a int);
+CREATE TABLE t2 (a int);
+INSERT INTO t1 VALUES (1), (2), (3), (4), (5);
+INSERT INTO t2 VALUES (2), (4), (6);
+SELECT t1.a FROM t1 STRAIGHT_JOIN t2 ON t1.a=t2.a;
+a
+2
+4
+EXPLAIN SELECT t1.a FROM t1 STRAIGHT_JOIN t2 ON t1.a=t2.a;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	5	
+1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	3	Using where
+EXPLAIN SELECT t1.a FROM t1 INNER JOIN t2 ON t1.a=t2.a;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	3	
+1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	5	Using where
+DROP TABLE t1,t2;

mysql-test/t/select.test

@@ -2255,3 +2255,19 @@ AND FK_firma_id = 2;
 
 drop table t1;
 
+#
+# Test for bug #10084: STRAIGHT_JOIN with ON expression 
+#
+
+CREATE TABLE t1 (a int);
+CREATE TABLE t2 (a int);
+INSERT INTO t1 VALUES (1), (2), (3), (4), (5);
+INSERT INTO t2 VALUES (2), (4), (6);
+
+SELECT t1.a FROM t1 STRAIGHT_JOIN t2 ON t1.a=t2.a;
+
+EXPLAIN SELECT t1.a FROM t1 STRAIGHT_JOIN t2 ON t1.a=t2.a;
+EXPLAIN SELECT t1.a FROM t1 INNER JOIN t2 ON t1.a=t2.a;
+
+DROP TABLE t1,t2;
+

sql/sql_yacc.yy

@@ -5108,10 +5108,12 @@ derived_table_list:
 
 join_table:
         table_ref normal_join table_ref { TEST_ASSERT($1 && ($$=$3)); }
-	| table_ref STRAIGHT_JOIN table_factor
+	| table_ref STRAIGHT_JOIN table_ref
 	  { TEST_ASSERT($1 && ($$=$3)); $3->straight=1; }
 	| table_ref normal_join table_ref ON expr
 	  { TEST_ASSERT($1 && ($$=$3)); add_join_on($3,$5); }
+        | table_ref STRAIGHT_JOIN table_ref ON expr
+          { TEST_ASSERT($1 && ($$=$3)); $3->straight=1; add_join_on($3,$5); }
 	| table_ref normal_join table_ref
 	  USING
 	  {