Merge stella.local:/home2/mydev/mysql-5.0-bug32705

into  stella.local:/home2/mydev/mysql-5.0-axmrg

myisam/mi_open.c

@@ -791,8 +791,17 @@ static void setup_key_functions(register MI_KEYDEF *keyinfo)
     keyinfo->get_key= _mi_get_pack_key;
     if (keyinfo->seg[0].flag & HA_PACK_KEY)
     {						/* Prefix compression */
+      /*
+        _mi_prefix_search() compares end-space against ASCII blank (' ').
+        It cannot be used for character sets, that do not encode the
+        blank character like ASCII does. UCS2 is an example. All
+        character sets with a fixed width > 1 or a mimimum width > 1
+        cannot represent blank like ASCII does. In these cases we have
+        to use _mi_seq_search() for the search.
+      */
       if (!keyinfo->seg->charset || use_strnxfrm(keyinfo->seg->charset) ||
-          (keyinfo->seg->flag & HA_NULL_PART))
+          (keyinfo->seg->flag & HA_NULL_PART) ||
+          (keyinfo->seg->charset->mbminlen > 1))
         keyinfo->bin_search=_mi_seq_search;
       else
         keyinfo->bin_search=_mi_prefix_search;

mysql-test/r/myisam.result

@@ -1839,6 +1839,16 @@ CHECK TABLE t1 EXTENDED;
 Table	Op	Msg_type	Msg_text
 test.t1	check	status	OK
 DROP TABLE t1;
+CREATE TABLE t1 (
+c1 CHAR(255) CHARACTER SET UCS2 COLLATE UCS2_BIN NOT NULL,
+KEY(c1)
+) ENGINE=MyISAM;
+INSERT INTO t1 VALUES ('marshall\'s');
+INSERT INTO t1 VALUES ('marsh');
+CHECK TABLE t1 EXTENDED;
+Table	Op	Msg_type	Msg_text
+test.t1	check	status	OK
+DROP TABLE t1;
 CREATE TABLE t1 (id int NOT NULL, ref int NOT NULL, INDEX (id)) ENGINE=MyISAM;
 CREATE TABLE t2 LIKE t1;
 INSERT INTO t2 (id, ref) VALUES (1,3), (2,1), (3,2), (4,5), (4,4);

mysql-test/t/myisam.test

@@ -1193,6 +1193,19 @@ SET @@myisam_repair_threads=1;
 CHECK TABLE t1 EXTENDED;
 DROP TABLE t1;
 
+#
+# Bug#32705 - myisam corruption: Key in wrong position
+#             at page 1024 with ucs2_bin
+#
+CREATE TABLE t1 (
+  c1 CHAR(255) CHARACTER SET UCS2 COLLATE UCS2_BIN NOT NULL,
+  KEY(c1)
+  ) ENGINE=MyISAM;
+INSERT INTO t1 VALUES ('marshall\'s');
+INSERT INTO t1 VALUES ('marsh');
+CHECK TABLE t1 EXTENDED;
+DROP TABLE t1;
+
 #
 # Bug#28837: MyISAM storage engine error (134) doing delete with self-join
 #