MDEV-5337: Wrong result in mariadb 5.5.32 with ORDER BY + LIMIT when index_condition_pushdown=on

- in test_if_skip_sort_order(), correct the condition under which
  we have the code that restores the previously pushed index condition.

mysql-test/r/innodb_icp.result

@@ -907,5 +907,30 @@ OR a = c
 ORDER BY e;
 a	b	c	d	e
 DROP TABLE t1,t2,t3;
+#
+# MDEV-5337: Wrong result in mariadb 5.5.32 with ORDER BY + LIMIT when index_condition_pushdown=on
+# MDEV-5512: Wrong result (WHERE clause ignored) with multiple clauses using Percona-XtraDB engine
+#
+create table t1(a int);
+insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+create table t2 (pk int primary key, 
+key1 char(32),
+key2 char(32),
+key(key1),
+key(key2)
+) engine=innodb;
+insert into t2 select 
+A.a+10*B.a+100*C.a,
+concat('rare-', A.a+10*B.a),
+concat('rare-', A.a+10*B.a)
+from
+t1 A, t1 B, t1 C;
+update t2 set key1='frequent-val' where pk between 100 and 350;
+select * from t2 ignore key(PRIMARY) 
+where key1='frequent-val' and key2 between 'rare-400' and 'rare-450' order by pk limit 2;
+pk	key1	key2
+141	frequent-val	rare-41
+142	frequent-val	rare-42
+drop table t1, t2;
 set optimizer_switch=@innodb_icp_tmp;
 set storage_engine= @save_storage_engine;

mysql-test/t/innodb_icp.test

@@ -45,6 +45,34 @@ ORDER BY e;
 
 DROP TABLE t1,t2,t3;
 
+--echo #
+--echo # MDEV-5337: Wrong result in mariadb 5.5.32 with ORDER BY + LIMIT when index_condition_pushdown=on
+--echo # MDEV-5512: Wrong result (WHERE clause ignored) with multiple clauses using Percona-XtraDB engine
+--echo #
+
+create table t1(a int);
+insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
+
+create table t2 (pk int primary key, 
+  key1 char(32),
+  key2 char(32),
+  key(key1),
+  key(key2)
+) engine=innodb;
+
+insert into t2 select 
+  A.a+10*B.a+100*C.a,
+  concat('rare-', A.a+10*B.a),
+  concat('rare-', A.a+10*B.a)
+from
+  t1 A, t1 B, t1 C;
+update t2 set key1='frequent-val' where pk between 100 and 350;
+select * from t2 ignore key(PRIMARY) 
+where key1='frequent-val' and key2 between 'rare-400' and 'rare-450' order by pk limit 2;
+
+drop table t1, t2;
+
+
 set optimizer_switch=@innodb_icp_tmp;
 set storage_engine= @save_storage_engine;
 

sql/sql_select.cc

@@ -19477,7 +19477,7 @@ test_if_skip_sort_order(JOIN_TAB *tab,ORDER *order,ha_rows select_limit,
           table->disable_keyread();
         }
       }
-      else if (tab->type != JT_ALL)
+      else if (tab->type != JT_ALL || tab->select->quick)
       {
         /*
           We're about to use a quick access to the table.