Post-merge fixes.

mysql-test/r/subselect.result

@@ -3718,6 +3718,48 @@ SELECT * FROM t1 WHERE _utf8'a' = ANY (SELECT s1 FROM t1);
 s1
 a
 DROP TABLE t1;
+CREATE TABLE t1(f1 int);
+CREATE TABLE t2(f2 int, f21 int, f3 timestamp);
+INSERT INTO t1 VALUES (1),(1),(2),(2);
+INSERT INTO t2 VALUES (1,1,"2004-02-29 11:11:11"), (2,2,"2004-02-29 11:11:11");
+SELECT ((SELECT f2 FROM t2 WHERE f21=f1 LIMIT 1) * COUNT(f1)) AS sq FROM t1 GROUP BY f1;
+sq
+2
+4
+SELECT (SELECT SUM(1) FROM t2 ttt GROUP BY t2.f3 LIMIT 1) AS tt FROM t2;
+tt
+2
+2
+PREPARE stmt1 FROM 'SELECT ((SELECT f2 FROM t2 WHERE f21=f1 LIMIT 1) * COUNT(f1)) AS sq FROM t1 GROUP BY f1';
+EXECUTE stmt1;
+sq
+2
+4
+EXECUTE stmt1;
+sq
+2
+4
+DEALLOCATE PREPARE stmt1;
+SELECT f2, AVG(f21), 
+(SELECT t.f3 FROM t2 AS t WHERE t2.f2=t.f2 AND t.f3=MAX(t2.f3)) AS test
+FROM t2 GROUP BY f2;
+f2	AVG(f21)	test
+1	1.0000	2004-02-29 11:11:11
+2	2.0000	2004-02-29 11:11:11
+DROP TABLE t1,t2;
+CREATE TABLE t1 (a int, b INT, c CHAR(10) NOT NULL);
+INSERT INTO t1 VALUES                                                         
+(1,1,'a'), (1,2,'b'), (1,3,'c'), (1,4,'d'), (1,5,'e'),                      
+(2,1,'f'), (2,2,'g'), (2,3,'h'), (3,4,'i'), (3,3,'j'),                      
+(3,2,'k'), (3,1,'l'), (1,9,'m');
+SELECT a, MAX(b),                                                             
+(SELECT t.c FROM t1 AS t WHERE t1.a=t.a AND t.b=MAX(t1.b)) AS test      
+FROM t1 GROUP BY a;
+a	MAX(b)	test
+1	9	m
+2	3	h
+3	4	i
+DROP TABLE t1;
 DROP TABLE IF EXISTS t1;
 DROP TABLE IF EXISTS t2;
 DROP TABLE IF EXISTS t1xt2;

sql/sql_yacc.yy

@@ -422,10 +422,10 @@ bool my_yyoverflow(short **a, YYSTYPE **b, ulong *yystacksize);
 
 %pure_parser					/* We have threads */
 /*
-  Currently there is 251 shift/reduce conflict. We should not introduce
+  Currently there is 287 shift/reduce conflict. We should not introduce
   new conflicts any more.
 */
-%expect 251
+%expect 287
 
 /*
    Comments for TOKENS.