BUG#21339: Crash at EXPLAIN PARTITIONS

Caused by missing check for end of partitions in prune range check


mysql-test/r/partition.result:
  Added test case for duplicate bug#21388
mysql-test/r/partition_range.result:
  Added new test case for bug#21339
mysql-test/t/partition.test:
  Added test case for duplicate bug#21388
mysql-test/t/partition_range.test:
  Added new test case for bug#21339
sql/sql_partition.cc:
  Check so that we don't set outer range to be larger than max_partition

mysql-test/r/partition.result

@@ -1117,4 +1117,32 @@ hello/master-data/tmpinx/t1#P#p1#SP#subpart11.MYI
 hello/master-data/tmpinx/t1#P#p2#SP#subpart20.MYI
 hello/master-data/tmpinx/t1#P#p2#SP#subpart21.MYI
 drop table t1;
+create table t1 (a bigint unsigned not null, primary key(a))
+engine = myisam
+partition by key (a)
+partitions 10;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` bigint(20) unsigned NOT NULL,
+  PRIMARY KEY (`a`)
+) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY KEY (a) PARTITIONS 10  */
+insert into t1 values (18446744073709551615), (0xFFFFFFFFFFFFFFFE),
+(18446744073709551613), (18446744073709551612);
+select * from t1;
+a
+18446744073709551612
+18446744073709551613
+18446744073709551614
+18446744073709551615
+select * from t1 where a = 18446744073709551615;
+a
+18446744073709551615
+delete from t1 where a = 18446744073709551615;
+select * from t1;
+a
+18446744073709551612
+18446744073709551613
+18446744073709551614
+drop table t1;
 End of 5.1 tests

mysql-test/r/partition_range.result

 drop table if exists t1;
+create table t1 (a date)
+engine = innodb
+partition by range (year(a))
+(partition p0 values less than (2006),
+partition p1 values less than (2007));
+explain partitions select * from t1
+where a between '2006-01-01' and '2007-06-01';
+id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	p1	ALL	NULL	NULL	NULL	NULL	2	Using where
+drop table t1;
 create table t1 (a int unsigned)
 partition by range (a)
 (partition pnull values less than (0),

mysql-test/t/partition.test

@@ -1300,4 +1300,22 @@ eval ALTER TABLE t1 REORGANIZE PARTITION p0 INTO
 drop table t1;
 --exec rmdir $MYSQLTEST_VARDIR/master-data/tmpdata || true
 --exec rmdir $MYSQLTEST_VARDIR/master-data/tmpinx || true
+
+#
+# Bug 21388: Bigint fails to find record
+#
+create table t1 (a bigint unsigned not null, primary key(a))
+engine = myisam
+partition by key (a)
+partitions 10;
+
+show create table t1;
+insert into t1 values (18446744073709551615), (0xFFFFFFFFFFFFFFFE),
+(18446744073709551613), (18446744073709551612);
+select * from t1;
+select * from t1 where a = 18446744073709551615;
+delete from t1 where a = 18446744073709551615;
+select * from t1;
+drop table t1;
+
 --echo End of 5.1 tests

mysql-test/t/partition_range.test

@@ -9,6 +9,18 @@
 drop table if exists t1;
 --enable_warnings
 
+#
+# Bug 21339: Crash in Explain Partitions
+#
+create table t1 (a date)
+engine = innodb
+partition by range (year(a))
+(partition p0 values less than (2006),
+ partition p1 values less than (2007));
+explain partitions select * from t1
+where a between '2006-01-01' and '2007-06-01';
+drop table t1;
+
 #
 # More checks for partition pruning
 #
@@ -686,3 +698,4 @@ EXPLAIN PARTITIONS SELECT * from t1
 WHERE (a >= '2004-07-01' AND a <= '2004-09-30') OR
       (a >= '2005-07-01' AND a <= '2005-09-30');
 DROP TABLE t1;
+

sql/sql_partition.cc

@@ -2573,10 +2573,13 @@ uint32 get_partition_id_range_for_endpoint(partition_info *part_info,
   }
   else 
   {
-    if (part_func_value == range_array[loc_part_id])
-      loc_part_id += test(include_endpoint);
-    else if (part_func_value > range_array[loc_part_id])
-      loc_part_id++;
+    if (loc_part_id < max_partition)
+    {
+      if (part_func_value == range_array[loc_part_id])
+        loc_part_id += test(include_endpoint);
+      else if (part_func_value > range_array[loc_part_id])
+        loc_part_id++;
+    }
     loc_part_id++;
   }
   DBUG_RETURN(loc_part_id);