diff --git a/Makefile.am b/Makefile.am
index ffa27220611..96f3561e31c 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -23,7 +23,7 @@ EXTRA_DIST =		INSTALL-SOURCE README COPYING EXCEPTIONS-CLIENT
 SUBDIRS =		. include @docs_dirs@ @zlib_dir@ \
 			@readline_topdir@ sql-common \
 			@thread_dirs@ pstack \
-			@sql_union_dirs@ scripts man tests \
+			@sql_union_dirs@ scripts @man_dirs@ tests \
 			netware @libmysqld_dirs@ \
 			@bench_dirs@ support-files @fs_dirs@ @tools_dirs@
 
diff --git a/VC++Files/sql/mysqld.dsp b/VC++Files/sql/mysqld.dsp
index 3508e6b31d0..034c8350c67 100644
--- a/VC++Files/sql/mysqld.dsp
+++ b/VC++Files/sql/mysqld.dsp
@@ -272,7 +272,7 @@ LINK32=xilink6.exe
 # PROP Target_Dir ""
 # ADD BASE CPP /nologo /G6 /MT /W3 /O2 /I "../include" /I "../regex" /I "../zlib" /D "DBUG_OFF" /D "MYSQL_SERVER" /D "_WINDOWS" /D "_CONSOLE" /D "_MBCS" /D "USE_SYMDIR" /D "HAVE_DLOPEN" /D "NDEBUG" /FD /c
 # SUBTRACT BASE CPP /YX
-# ADD CPP /nologo /G6 /MT /W3 /O2 /I "../include" /I "../regex" /I "../zlib" /D "__NT__" /D "DBUG_OFF" /D "HAVE_INNOBASE_DB" /D LICENSE=Commercial /D "NDEBUG" /D "MYSQL_SERVER" /D "_WINDOWS" /D "_CONSOLE" /D "_MBCS" /D "HAVE_DLOPEN" /D MYSQL_SERVER_SUFFIX=-pro-nt" /FD
+# ADD CPP /nologo /G6 /MT /W3 /O2 /I "../include" /I "../regex" /I "../zlib" /D "__NT__" /D "DBUG_OFF" /D "HAVE_INNOBASE_DB" /D LICENSE=Commercial /D "NDEBUG" /D "MYSQL_SERVER" /D "_WINDOWS" /D "_CONSOLE" /D "_MBCS" /D "HAVE_DLOPEN" /D MYSQL_SERVER_SUFFIX=-pro-nt /FD
 # ADD BASE RSC /l 0x409 /d "NDEBUG"
 # ADD RSC /l 0x409 /d "NDEBUG"
 BSC32=bscmake.exe
diff --git a/client/mysqltest.c b/client/mysqltest.c
index 87c34591b89..b7f4ceb9c20 100644
--- a/client/mysqltest.c
+++ b/client/mysqltest.c
@@ -60,7 +60,12 @@
 #include <sys/stat.h>
 #include <violite.h>
 #include <regex.h>                        /* Our own version of lib */
+#ifdef HAVE_SYS_WAIT_H
 #include <sys/wait.h>
+#endif
+#ifndef WEXITSTATUS
+# define WEXITSTATUS(stat_val) ((unsigned)(stat_val) >> 8)
+#endif
 #define MAX_QUERY     131072
 #define MAX_VAR_NAME	256
 #define MAX_COLUMNS	256
diff --git a/configure.in b/configure.in
index d454d23b38c..0889e9a3257 100644
--- a/configure.in
+++ b/configure.in
@@ -419,9 +419,14 @@ then
 
   if echo $CXX | grep gcc > /dev/null 2>&1
   then
-    if $CXX -v 2>&1 | grep 'version 3' > /dev/null 2>&1
+    AC_MSG_CHECKING([if CXX is gcc 3 or 4])
+    if $CXX -v 2>&1 | grep 'version [[34]]' > /dev/null 2>&1
     then
+      AC_MSG_RESULT([yes])
+      AC_MSG_NOTICE([using MySQL tricks to avoid linking C++ code with C++ libraries])
       CXXFLAGS="$CXXFLAGS -DUSE_MYSYS_NEW -DDEFINE_CXA_PURE_VIRTUAL"
+    else
+      AC_MSG_RESULT([no])
     fi
   fi
 fi
diff --git a/innobase/fil/fil0fil.c b/innobase/fil/fil0fil.c
index 9d5def718a6..e83d2fcde32 100644
--- a/innobase/fil/fil0fil.c
+++ b/innobase/fil/fil0fil.c
@@ -3400,9 +3400,9 @@ fil_extend_space_to_desired_size(
 	fil_space_t*	space;
 	byte*		buf2;
 	byte*		buf;
+	ulint		buf_size;
 	ulint		start_page_no;
 	ulint		file_start_page_no;
-	ulint		n_pages;
 	ulint		offset_high;
 	ulint		offset_low;
 	ibool		success		= TRUE;
@@ -3427,22 +3427,20 @@ fil_extend_space_to_desired_size(
 
 	fil_node_prepare_for_io(node, system, space);
 
-	/* Extend 1 MB at a time */
-
-	buf2 = mem_alloc(1024 * 1024 + UNIV_PAGE_SIZE);
-	buf = ut_align(buf2, UNIV_PAGE_SIZE);
-
-	memset(buf, '\0', 1024 * 1024);
-
 	start_page_no = space->size;
 	file_start_page_no = space->size - node->size;
 
-	while (start_page_no < size_after_extend) {	
-		n_pages = size_after_extend - start_page_no;
+	/* Extend at most 64 pages at a time */
+	buf_size = ut_min(64, size_after_extend - start_page_no)
+				* UNIV_PAGE_SIZE;
+	buf2 = mem_alloc(buf_size + UNIV_PAGE_SIZE);
+	buf = ut_align(buf2, UNIV_PAGE_SIZE);
 
-		if (n_pages > (1024 * 1024) / UNIV_PAGE_SIZE) {
-			n_pages = (1024 * 1024) / UNIV_PAGE_SIZE;
-		}
+	memset(buf, 0, buf_size);
+
+	while (start_page_no < size_after_extend) {
+		ulint	n_pages = ut_min(buf_size / UNIV_PAGE_SIZE,
+				size_after_extend - start_page_no);
 
 		offset_high = (start_page_no - file_start_page_no)
 				/ (4096 * ((1024 * 1024) / UNIV_PAGE_SIZE));
diff --git a/innobase/include/os0file.h b/innobase/include/os0file.h
index ebc014df9fd..63cd41a6d28 100644
--- a/innobase/include/os0file.h
+++ b/innobase/include/os0file.h
@@ -368,7 +368,7 @@ os_file_get_size_as_iblonglong(
 				/* out: size in bytes, -1 if error */
 	os_file_t	file);	/* in: handle to a file */
 /***************************************************************************
-Sets a file size. This function can be used to extend or truncate a file. */
+Write the specified number of zeros to a newly created file. */
 
 ibool
 os_file_set_size(
diff --git a/innobase/os/os0file.c b/innobase/os/os0file.c
index 15f5bf40e51..4313b7f7019 100644
--- a/innobase/os/os0file.c
+++ b/innobase/os/os0file.c
@@ -1642,7 +1642,7 @@ os_file_get_size_as_iblonglong(
 }
 
 /***************************************************************************
-Sets a file size. This function can be used to extend or truncate a file. */
+Write the specified number of zeros to a newly created file. */
 
 ibool
 os_file_set_size(
@@ -1655,47 +1655,46 @@ os_file_set_size(
 				size */
 	ulint		size_high)/* in: most significant 32 bits of size */
 {
-	ib_longlong	offset;
-	ib_longlong	low;
-	ulint   	n_bytes;
+	ib_longlong	current_size;
+	ib_longlong	desired_size;
 	ibool		ret;
 	byte*   	buf;
 	byte*   	buf2;
-	ulint   	i;
+	ulint		buf_size;
 
 	ut_a(size == (size & 0xFFFFFFFF));
 
-	/* We use a very big 8 MB buffer in writing because Linux may be
-	extremely slow in fsync on 1 MB writes */
+	current_size = 0;
+	desired_size = (ib_longlong)size + (((ib_longlong)size_high) << 32);
 
-	buf2 = ut_malloc(UNIV_PAGE_SIZE * 513);
+	/* Write up to 1 megabyte at a time. */
+	buf_size = ut_min(64, (ulint) (desired_size / UNIV_PAGE_SIZE))
+							* UNIV_PAGE_SIZE;
+	buf2 = ut_malloc(buf_size + UNIV_PAGE_SIZE);
 
 	/* Align the buffer for possible raw i/o */
 	buf = ut_align(buf2, UNIV_PAGE_SIZE);
 
 	/* Write buffer full of zeros */
-	for (i = 0; i < UNIV_PAGE_SIZE * 512; i++) {
-	        buf[i] = '\0';
-	}
+	memset(buf, 0, buf_size);
 
-	offset = 0;
-	low = (ib_longlong)size + (((ib_longlong)size_high) << 32);
-
-	if (low >= (ib_longlong)(100 * 1024 * 1024)) {
+	if (desired_size >= (ib_longlong)(100 * 1024 * 1024)) {
 				
 		fprintf(stderr, "InnoDB: Progress in MB:");
 	}
 
-	while (offset < low) {
-	        if (low - offset < UNIV_PAGE_SIZE * 512) {
-	        	n_bytes = (ulint)(low - offset);
-	        } else {
-	        	n_bytes = UNIV_PAGE_SIZE * 512;
-	        }
-	  
+	while (current_size < desired_size) {
+		ulint	n_bytes;
+
+		if (desired_size - current_size < (ib_longlong) buf_size) {
+			n_bytes = (ulint) (desired_size - current_size);
+		} else {
+			n_bytes = buf_size;
+		}
+
 	        ret = os_file_write(name, file, buf,
-				(ulint)(offset & 0xFFFFFFFF),
-				    (ulint)(offset >> 32),
+				(ulint)(current_size & 0xFFFFFFFF),
+				    (ulint)(current_size >> 32),
 				n_bytes);
 	        if (!ret) {
 			ut_free(buf2);
@@ -1703,18 +1702,18 @@ os_file_set_size(
 	        }
 				
 		/* Print about progress for each 100 MB written */
-		if ((offset + n_bytes) / (ib_longlong)(100 * 1024 * 1024)
-		    != offset / (ib_longlong)(100 * 1024 * 1024)) {
+		if ((current_size + n_bytes) / (ib_longlong)(100 * 1024 * 1024)
+		    != current_size / (ib_longlong)(100 * 1024 * 1024)) {
 
 		        fprintf(stderr, " %lu00",
-				(ulong) ((offset + n_bytes)
+				(ulong) ((current_size + n_bytes)
 					/ (ib_longlong)(100 * 1024 * 1024)));
 		}
 		
-	        offset += n_bytes;
+	        current_size += n_bytes;
 	}
 
-	if (low >= (ib_longlong)(100 * 1024 * 1024)) {
+	if (desired_size >= (ib_longlong)(100 * 1024 * 1024)) {
 				
 		fprintf(stderr, "\n");
 	}
diff --git a/myisam/mi_create.c b/myisam/mi_create.c
index d363f3d5b67..890ee61fd7f 100644
--- a/myisam/mi_create.c
+++ b/myisam/mi_create.c
@@ -194,11 +194,10 @@ int mi_create(const char *name,uint keys,MI_KEYDEF *keydefs,
       test(test_all_bits(options, HA_OPTION_CHECKSUM | HA_PACK_RECORD));
   min_pack_length+=packed;
 
-  if (!ci->data_file_length)
+  if (!ci->data_file_length && ci->max_rows)
   {
-    if (ci->max_rows == 0 || pack_reclength == INT_MAX32)
-      ci->data_file_length= INT_MAX32-1;		/* Should be enough */
-    else if ((~(ulonglong) 0)/ci->max_rows < (ulonglong) pack_reclength)
+    if (pack_reclength == INT_MAX32 ||
+             (~(ulonglong) 0)/ci->max_rows < (ulonglong) pack_reclength)
       ci->data_file_length= ~(ulonglong) 0;
     else
       ci->data_file_length=(ulonglong) ci->max_rows*pack_reclength;
@@ -724,10 +723,13 @@ err:
 
 uint mi_get_pointer_length(ulonglong file_length, uint def)
 {
+  DBUG_ASSERT(def >= 2 && def <= 7);
   if (file_length)				/* If not default */
   {
+#ifdef NOT_YET_READY_FOR_8_BYTE_POINTERS
     if (file_length >= (longlong) 1 << 56)
       def=8;
+#endif
     if (file_length >= (longlong) 1 << 48)
       def=7;
     if (file_length >= (longlong) 1 << 40)
diff --git a/mysql-test/r/ctype_ucs.result b/mysql-test/r/ctype_ucs.result
index 5902dd247ce..6d00f13737d 100644
--- a/mysql-test/r/ctype_ucs.result
+++ b/mysql-test/r/ctype_ucs.result
@@ -630,3 +630,14 @@ Warnings:
 Warning	1265	Data truncated for column 'Field1' at row 1
 DROP TABLE t1;
 SET NAMES latin1;
+CREATE TABLE t1 (
+a varchar(255) NOT NULL default '',
+KEY a (a)
+) ENGINE=MyISAM DEFAULT CHARSET=ucs2 COLLATE ucs2_general_ci;
+insert into t1 values (0x803d);
+insert into t1 values (0x005b);
+select hex(a) from t1;
+hex(a)
+005B
+803D
+drop table t1;
diff --git a/mysql-test/r/ctype_utf8.result b/mysql-test/r/ctype_utf8.result
index 12ef8dfb8e8..3a8265b01f7 100644
--- a/mysql-test/r/ctype_utf8.result
+++ b/mysql-test/r/ctype_utf8.result
@@ -939,3 +939,14 @@ content	msisdn
 ERR Имри.Афимим.Аеимимримдмримрмрирор имримримримр имридм ирбднримрфмририримрфмфмим.Ад.Д имдимримрад.Адимримримрмдиримримримр м.Дадимфшьмримд им.Адимимрн имадми	1234567890
 11 g	1234567890
 DROP TABLE t1,t2;
+CREATE TABLE t1 (
+a varchar(255) NOT NULL default '',
+KEY a (a)
+) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE utf8_general_ci;
+insert into t1 values (_utf8 0xe880bd);
+insert into t1 values (_utf8 0x5b);
+select hex(a) from t1;
+hex(a)
+5B
+E880BD
+drop table t1;
diff --git a/mysql-test/r/func_str.result b/mysql-test/r/func_str.result
index ea1efbc7c0a..cbedf4370ff 100644
--- a/mysql-test/r/func_str.result
+++ b/mysql-test/r/func_str.result
@@ -789,3 +789,64 @@ field(0,NULL,1,0)	field("",NULL,"bar","")	field(0.0,NULL,1.0,0.0)
 select field(NULL,1,2,NULL), field(NULL,1,2,0);
 field(NULL,1,2,NULL)	field(NULL,1,2,0)
 0	0
+CREATE TABLE t1 (str varchar(20) PRIMARY KEY);
+CREATE TABLE t2 (num int primary key);
+INSERT INTO t1 VALUES ('notnumber');
+INSERT INTO t2 VALUES (0), (1);
+SELECT * FROM t1, t2 WHERE num=str;
+str	num
+notnumber	0
+SELECT * FROM t1, t2 WHERE num=substring(str from 1 for 6);
+str	num
+notnumber	0
+DROP TABLE t1,t2;
+CREATE TABLE t1(
+id int(11) NOT NULL auto_increment,
+pc int(11) NOT NULL default '0',
+title varchar(20) default NULL,
+PRIMARY KEY (id)
+);
+INSERT INTO t1 VALUES
+(1, 0, 'Main'),
+(2, 1, 'Toys'),
+(3, 1, 'Games');
+SELECT t1.id, CONCAT_WS('->', t3.title, t2.title, t1.title) as col1
+FROM t1 LEFT JOIN t1 AS t2 ON t1.pc=t2.id
+LEFT JOIN t1 AS t3 ON t2.pc=t3.id;
+id	col1
+1	Main
+2	Main->Toys
+3	Main->Games
+SELECT t1.id, CONCAT_WS('->', t3.title, t2.title, t1.title) as col1
+FROM t1 LEFT JOIN t1 AS t2 ON t1.pc=t2.id
+LEFT JOIN t1 AS t3 ON t2.pc=t3.id
+WHERE CONCAT_WS('->', t3.title, t2.title, t1.title) LIKE '%Toys%';
+id	col1
+2	Main->Toys
+DROP TABLE t1;
+CREATE TABLE t1(
+trackid     int(10) unsigned NOT NULL auto_increment,
+trackname   varchar(100) NOT NULL default '',
+PRIMARY KEY (trackid)
+);
+CREATE TABLE t2(
+artistid    int(10) unsigned NOT NULL auto_increment,
+artistname  varchar(100) NOT NULL default '',
+PRIMARY KEY (artistid)
+);
+CREATE TABLE t3(
+trackid     int(10) unsigned NOT NULL,
+artistid    int(10) unsigned NOT NULL,
+PRIMARY KEY (trackid,artistid)
+);
+INSERT INTO t1 VALUES (1, 'April In Paris'), (2, 'Autumn In New York');
+INSERT INTO t2 VALUES (1, 'Vernon Duke');
+INSERT INTO t3 VALUES (1,1);
+SELECT CONCAT_WS(' ', trackname, artistname) trackname, artistname
+FROM t1 LEFT JOIN t3 ON t1.trackid=t3.trackid
+LEFT JOIN t2 ON t2.artistid=t3.artistid
+WHERE CONCAT_WS(' ', trackname, artistname) LIKE '%In%';
+trackname	artistname
+April In Paris Vernon Duke	Vernon Duke
+Autumn In New York	NULL
+DROP TABLE t1,t2,t3;
diff --git a/mysql-test/r/group_by.result b/mysql-test/r/group_by.result
index 7f78b8bda9b..295663fe1d3 100644
--- a/mysql-test/r/group_by.result
+++ b/mysql-test/r/group_by.result
@@ -751,3 +751,9 @@ COUNT(DISTINCT(t1.id))	err_comment
 1	NULL
 1	a problem
 DROP TABLE t1, t2;
+CREATE TABLE t1 (n int);
+INSERT INTO t1 VALUES (1);
+SELECT n+1 AS n FROM t1 GROUP BY n;
+n
+2
+DROP TABLE t1;
diff --git a/mysql-test/r/select.result b/mysql-test/r/select.result
index f828759672a..abf5c8c87ad 100644
--- a/mysql-test/r/select.result
+++ b/mysql-test/r/select.result
@@ -2515,3 +2515,12 @@ SELECT b FROM t1 WHERE b=0x8000000000000000;
 b
 9223372036854775808
 DROP TABLE t1;
+CREATE TABLE `t1` ( `gid` int(11) default NULL, `uid` int(11) default NULL);
+CREATE TABLE `t2` ( `ident` int(11) default NULL, `level` char(16) default NULL);
+INSERT INTO `t2` VALUES (0,'READ');
+CREATE TABLE `t3` ( `id` int(11) default NULL, `name` char(16) default NULL);
+INSERT INTO `t3` VALUES (1,'fs');
+select * from t3 left join t1 on t3.id = t1.uid, t2 where t2.ident in (0, t1.gid, t3.id, 0);
+id	name	gid	uid	ident	level
+1	fs	NULL	NULL	0	READ
+drop table t1,t2,t3;
diff --git a/mysql-test/r/variables.result b/mysql-test/r/variables.result
index 602750d5033..e370202cc9f 100644
--- a/mysql-test/r/variables.result
+++ b/mysql-test/r/variables.result
@@ -482,10 +482,10 @@ t1	CREATE TABLE `t1` (
   `c3` longtext
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 drop table t1;
-SET GLOBAL MYISAM_DATA_POINTER_SIZE= 8;
+SET GLOBAL MYISAM_DATA_POINTER_SIZE= 7;
 SHOW VARIABLES LIKE 'MYISAM_DATA_POINTER_SIZE';
 Variable_name	Value
-myisam_data_pointer_size	8
+myisam_data_pointer_size	7
 SET GLOBAL table_cache=-1;
 SHOW VARIABLES LIKE 'table_cache';
 Variable_name	Value
diff --git a/mysql-test/t/ctype_ucs.test b/mysql-test/t/ctype_ucs.test
index 6c72c409463..8dd8d02d018 100644
--- a/mysql-test/t/ctype_ucs.test
+++ b/mysql-test/t/ctype_ucs.test
@@ -404,3 +404,15 @@ CREATE TABLE t1 (Field1 int(10) unsigned default '0');
 INSERT INTO t1 VALUES ('-1');
 DROP TABLE t1;
 SET NAMES latin1;
+
+#
+# Bug#9557 MyISAM utf8 table crash
+#
+CREATE TABLE t1 (
+  a varchar(255) NOT NULL default '',
+  KEY a (a)
+) ENGINE=MyISAM DEFAULT CHARSET=ucs2 COLLATE ucs2_general_ci;
+insert into t1 values (0x803d);
+insert into t1 values (0x005b);
+select hex(a) from t1;
+drop table t1;
diff --git a/mysql-test/t/ctype_utf8.test b/mysql-test/t/ctype_utf8.test
index 343b7c867e7..0a847057258 100644
--- a/mysql-test/t/ctype_utf8.test
+++ b/mysql-test/t/ctype_utf8.test
@@ -788,3 +788,15 @@ INSERT INTO t2 VALUES ('1234567890',2,'2005-05-24 13:53:25');
 SELECT content, t2.msisdn FROM t1, t2 WHERE t1.msisdn = '1234567890';
 
 DROP TABLE t1,t2;
+
+#
+# Bug#9557 MyISAM utf8 table crash
+#
+CREATE TABLE t1 (
+  a varchar(255) NOT NULL default '',
+  KEY a (a)
+) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE utf8_general_ci;
+insert into t1 values (_utf8 0xe880bd);
+insert into t1 values (_utf8 0x5b);
+select hex(a) from t1;
+drop table t1;
diff --git a/mysql-test/t/func_str.test b/mysql-test/t/func_str.test
index a5536f7a0be..f5f9ddac3b5 100644
--- a/mysql-test/t/func_str.test
+++ b/mysql-test/t/func_str.test
@@ -527,3 +527,73 @@ DROP TABLE t1, t2;
 #
 select field(0,NULL,1,0), field("",NULL,"bar",""), field(0.0,NULL,1.0,0.0);
 select field(NULL,1,2,NULL), field(NULL,1,2,0);
+
+#
+# Bug #10124: access by integer index with a string key that is not a number  
+#
+
+CREATE TABLE t1 (str varchar(20) PRIMARY KEY);
+CREATE TABLE t2 (num int primary key);
+INSERT INTO t1 VALUES ('notnumber');
+INSERT INTO t2 VALUES (0), (1); 
+
+SELECT * FROM t1, t2 WHERE num=str;
+SELECT * FROM t1, t2 WHERE num=substring(str from 1 for 6);
+
+DROP TABLE t1,t2;
+
+#
+# Bug #11469: NOT NULL optimization wrongly used for arguments of CONCAT_WS  
+#
+
+CREATE TABLE t1(
+  id int(11) NOT NULL auto_increment,
+  pc int(11) NOT NULL default '0',
+  title varchar(20) default NULL,
+  PRIMARY KEY (id)
+);
+
+INSERT INTO t1 VALUES
+  (1, 0, 'Main'),
+  (2, 1, 'Toys'),
+  (3, 1, 'Games');
+
+SELECT t1.id, CONCAT_WS('->', t3.title, t2.title, t1.title) as col1
+  FROM t1 LEFT JOIN t1 AS t2 ON t1.pc=t2.id
+          LEFT JOIN t1 AS t3 ON t2.pc=t3.id;
+SELECT t1.id, CONCAT_WS('->', t3.title, t2.title, t1.title) as col1
+  FROM t1 LEFT JOIN t1 AS t2 ON t1.pc=t2.id
+          LEFT JOIN t1 AS t3 ON t2.pc=t3.id
+    WHERE CONCAT_WS('->', t3.title, t2.title, t1.title) LIKE '%Toys%';
+
+DROP TABLE t1;
+
+
+CREATE TABLE t1(
+  trackid     int(10) unsigned NOT NULL auto_increment,
+  trackname   varchar(100) NOT NULL default '',
+  PRIMARY KEY (trackid)
+);
+
+CREATE TABLE t2(
+  artistid    int(10) unsigned NOT NULL auto_increment,
+  artistname  varchar(100) NOT NULL default '',
+  PRIMARY KEY (artistid)
+);
+
+CREATE TABLE t3(
+  trackid     int(10) unsigned NOT NULL,
+  artistid    int(10) unsigned NOT NULL,
+  PRIMARY KEY (trackid,artistid)
+);
+
+INSERT INTO t1 VALUES (1, 'April In Paris'), (2, 'Autumn In New York');
+INSERT INTO t2 VALUES (1, 'Vernon Duke');
+INSERT INTO t3 VALUES (1,1);
+
+SELECT CONCAT_WS(' ', trackname, artistname) trackname, artistname
+  FROM t1 LEFT JOIN t3 ON t1.trackid=t3.trackid
+          LEFT JOIN t2 ON t2.artistid=t3.artistid
+    WHERE CONCAT_WS(' ', trackname, artistname) LIKE '%In%';
+
+DROP TABLE t1,t2,t3;
diff --git a/mysql-test/t/group_by.test b/mysql-test/t/group_by.test
index 694aa8d7411..23d51b0f297 100644
--- a/mysql-test/t/group_by.test
+++ b/mysql-test/t/group_by.test
@@ -580,3 +580,15 @@ SELECT COUNT(DISTINCT(t1.id)), LEFT(err_comment, 256) AS err_comment
   FROM t1 LEFT JOIN t2 ON t1.id=t2.id GROUP BY err_comment;
 
 DROP TABLE t1, t2;
+
+#
+# Test for bug #11414: crash on Windows for a simple GROUP BY query 
+#  
+                    
+CREATE TABLE t1 (n int);
+INSERT INTO t1 VALUES (1);
+
+SELECT n+1 AS n FROM t1 GROUP BY n;
+
+DROP TABLE t1;
+
diff --git a/mysql-test/t/ndb_alter_table.test b/mysql-test/t/ndb_alter_table.test
index 9cc1426554f..d6a1ef5e25f 100644
--- a/mysql-test/t/ndb_alter_table.test
+++ b/mysql-test/t/ndb_alter_table.test
@@ -7,6 +7,13 @@ DROP TABLE IF EXISTS t1;
 drop database if exists mysqltest;
 --enable_warnings
 
+connect (con1,localhost,root,,test);
+connect (con2,localhost,root,,test);
+
+connection con2;
+-- sleep 2
+connection con1;
+
 #
 # Basic test to show that the ALTER TABLE
 #  is working
@@ -88,10 +95,6 @@ CREATE TABLE t1 (
 
 INSERT INTO t1 VALUES (9410,9412);
 
-connect (con1,localhost,,,test);
-connect (con2,localhost,,,test);
-
-connection con1;
 ALTER TABLE t1 ADD COLUMN c int not null;
 select * from t1 order by a;
 
diff --git a/mysql-test/t/select.test b/mysql-test/t/select.test
index 3877e67de41..baaab6e4189 100644
--- a/mysql-test/t/select.test
+++ b/mysql-test/t/select.test
@@ -2060,3 +2060,18 @@ CREATE TABLE t1 (b BIGINT(20) UNSIGNED NOT NULL, PRIMARY KEY (b));
 INSERT INTO t1 VALUES (0x8000000000000000);
 SELECT b FROM t1 WHERE b=0x8000000000000000;
 DROP TABLE t1;
+
+#
+# IN with outer join condition (BUG#9393)
+#
+CREATE TABLE `t1` ( `gid` int(11) default NULL, `uid` int(11) default NULL);
+
+CREATE TABLE `t2` ( `ident` int(11) default NULL, `level` char(16) default NULL);
+INSERT INTO `t2` VALUES (0,'READ');
+
+CREATE TABLE `t3` ( `id` int(11) default NULL, `name` char(16) default NULL);
+INSERT INTO `t3` VALUES (1,'fs');
+
+select * from t3 left join t1 on t3.id = t1.uid, t2 where t2.ident in (0, t1.gid, t3.id, 0);
+
+drop table t1,t2,t3;
diff --git a/mysql-test/t/variables.test b/mysql-test/t/variables.test
index e45218a9ed7..b8a12323cf9 100644
--- a/mysql-test/t/variables.test
+++ b/mysql-test/t/variables.test
@@ -363,9 +363,13 @@ drop table t1;
 
 #
 # Bug #6993: myisam_data_pointer_size
+# Wrong bug report, data pointer size must be restricted to 7,
+# setting to 8 will not work on all computers, myisamchk and
+# the server may see a wrong value, such as 0 or negative number
+# if 8 bytes is set.
 #
 
-SET GLOBAL MYISAM_DATA_POINTER_SIZE= 8;
+SET GLOBAL MYISAM_DATA_POINTER_SIZE= 7;
 SHOW VARIABLES LIKE 'MYISAM_DATA_POINTER_SIZE';
 
 #
diff --git a/mysys/thr_alarm.c b/mysys/thr_alarm.c
index 19611a6027a..05d14073953 100644
--- a/mysys/thr_alarm.c
+++ b/mysys/thr_alarm.c
@@ -86,6 +86,7 @@ void init_thr_alarm(uint max_alarms)
   {
     struct sigaction sact;
     sact.sa_flags = 0;
+    bzero((char*) &sact, sizeof(sact));
     sact.sa_handler = thread_alarm;
     sigaction(THR_CLIENT_ALARM, &sact, (struct sigaction*) 0);
   }
diff --git a/scripts/make_win_src_distribution.sh b/scripts/make_win_src_distribution.sh
index b8dd907920c..71d61b7a02d 100644
--- a/scripts/make_win_src_distribution.sh
+++ b/scripts/make_win_src_distribution.sh
@@ -357,6 +357,9 @@ if [ -d $BASE/SSL/SCCS ]
 then
   find $BASE/ -type d -name SCCS -printf " \"%p\"" | xargs rm -r -f
 fi
+find $BASE/ -type d -name .deps -printf " \"%p\"" | xargs rm -r -f
+find $BASE/ -type d -name .libs -printf " \"%p\"" | xargs rm -r -f
+rm -r -f "$BASE/mysql-test/var"
 
 #
 # Initialize the initial data directory
diff --git a/sql/field.cc b/sql/field.cc
index 88816151c10..64d5babd159 100644
--- a/sql/field.cc
+++ b/sql/field.cc
@@ -2480,7 +2480,10 @@ int Field_long::store(const char *from,uint len,CHARSET_INFO *cs)
   if (error ||
       (from+len != end && table->in_use->count_cuted_fields &&
        !test_if_int(from,len,end,cs)))
-    error= 1;
+  {
+    if (error != 1)
+      error= 2;
+  }
 #if SIZEOF_LONG > 4
   if (unsigned_flag)
   {
@@ -2508,10 +2511,7 @@ int Field_long::store(const char *from,uint len,CHARSET_INFO *cs)
   }
 #endif
   if (error)
-  {
     set_warning(MYSQL_ERROR::WARN_LEVEL_WARN, ER_WARN_DATA_TRUNCATED, 1);
-    error= 1;
-  }
 #ifdef WORDS_BIGENDIAN
   if (table->db_low_byte_first)
   {
@@ -2777,8 +2777,11 @@ int Field_longlong::store(const char *from,uint len,CHARSET_INFO *cs)
       (from+len != end && table->in_use->count_cuted_fields &&
        !test_if_int(from,len,end,cs)))
   {
-    set_warning(MYSQL_ERROR::WARN_LEVEL_WARN, ER_WARN_DATA_TRUNCATED, 1);
-    error= 1;
+    if (error != 1)
+    {
+      set_warning(MYSQL_ERROR::WARN_LEVEL_WARN, ER_WARN_DATA_TRUNCATED, 1);
+      error= 2;
+    }
   }
 #ifdef WORDS_BIGENDIAN
   if (table->db_low_byte_first)
@@ -2998,7 +3001,7 @@ int Field_float::store(const char *from,uint len,CHARSET_INFO *cs)
   double nr= my_strntod(cs,(char*) from,len,&end,&error);
   if (error || ((uint) (end-from) != len && table->in_use->count_cuted_fields))
   {
-    error= 1;
+    error= 2;
     set_warning(MYSQL_ERROR::WARN_LEVEL_WARN, ER_WARN_DATA_TRUNCATED, 1);
   }
   Field_float::store(nr);
@@ -3284,7 +3287,7 @@ int Field_double::store(const char *from,uint len,CHARSET_INFO *cs)
   double nr= my_strntod(cs,(char*) from, len, &end, &error);
   if (error || ((uint) (end-from) != len && table->in_use->count_cuted_fields))
   {
-    error= 1;
+    error= 2;
     set_warning(MYSQL_ERROR::WARN_LEVEL_WARN, ER_WARN_DATA_TRUNCATED, 1);
   }
   Field_double::store(nr);
@@ -3666,6 +3669,8 @@ int Field_timestamp::store(const char *from,uint len,CHARSET_INFO *cs)
       error= 1;
     }
   }
+  if (error > 1)
+    error= 2;
 
 #ifdef WORDS_BIGENDIAN
   if (table->db_low_byte_first)
@@ -3954,7 +3959,7 @@ int Field_time::store(const char *from,uint len,CHARSET_INFO *cs)
   if (str_to_time(from, len, &ltime, &error))
   {
     tmp=0L;
-    error= 1;
+    error= 2;
     set_datetime_warning(MYSQL_ERROR::WARN_LEVEL_WARN, ER_WARN_DATA_TRUNCATED,
                          from, len, MYSQL_TIMESTAMP_TIME, 1);
   }
@@ -3976,6 +3981,8 @@ int Field_time::store(const char *from,uint len,CHARSET_INFO *cs)
                            from, len, MYSQL_TIMESTAMP_TIME, !error);
       error= 1;
     }
+    if (error > 1)
+      error= 2;
   }
   
   if (ltime.neg)
@@ -4305,7 +4312,7 @@ int Field_date::store(const char *from, uint len,CHARSET_INFO *cs)
   if (str_to_datetime(from, len, &l_time, 1, &error) <= MYSQL_TIMESTAMP_ERROR)
   {
     tmp=0;
-    error= 1;
+    error= 2;
   }
   else
     tmp=(uint32) l_time.year*10000L + (uint32) (l_time.month*100+l_time.day);
@@ -4496,7 +4503,7 @@ int Field_newdate::store(const char *from,uint len,CHARSET_INFO *cs)
   if (str_to_datetime(from, len, &l_time, 1, &error) <= MYSQL_TIMESTAMP_ERROR)
   {
     tmp=0L;
-    error= 1;
+    error= 2;
   }
   else
     tmp= l_time.day + l_time.month*32 + l_time.year*16*32;
@@ -4938,7 +4945,7 @@ int Field_string::store(const char *from,uint length,CHARSET_INFO *cs)
     from= tmpstr.ptr();
     length=  tmpstr.length();
     if (conv_errors)
-      error= 1;
+      error= 2;
   }
 
   /* 
@@ -4962,7 +4969,7 @@ int Field_string::store(const char *from,uint length,CHARSET_INFO *cs)
     from+= field_charset->cset->scan(field_charset, from, end,
 				     MY_SEQ_SPACES);
     if (from != end)
-      error= 1;
+      error= 2;
   }
   if (error)
     set_warning(MYSQL_ERROR::WARN_LEVEL_WARN, ER_WARN_DATA_TRUNCATED, 1);
@@ -5217,12 +5224,12 @@ int Field_varstring::store(const char *from,uint length,CHARSET_INFO *cs)
     from= tmpstr.ptr();
     length=  tmpstr.length();
     if (conv_errors)
-      error= 1;
+      error= 2;
   }
   if (length > field_length)
   {
     length=field_length;
-    error= 1;
+    error= 2;
   }
   if (error)
     set_warning(MYSQL_ERROR::WARN_LEVEL_WARN, ER_WARN_DATA_TRUNCATED, 1);
@@ -5575,7 +5582,7 @@ int Field_blob::store(const char *from,uint length,CHARSET_INFO *cs)
       from= tmpstr.ptr();
       length=  tmpstr.length();
       if (conv_errors)
-        error= 1;
+        error= 2;
     }
     
     copy_length= max_data_length();
@@ -5590,7 +5597,7 @@ int Field_blob::store(const char *from,uint length,CHARSET_INFO *cs)
                                                       copy_length,
                                                       &well_formed_error);
     if (copy_length < length)
-      error= 1;
+      error= 2;
     Field_blob::store_length(copy_length);
     if (was_conversion || table->copy_blobs || copy_length <= MAX_FIELD_WIDTH)
     {						// Must make a copy
diff --git a/sql/item_cmpfunc.h b/sql/item_cmpfunc.h
index bea8250de9d..525f269e528 100644
--- a/sql/item_cmpfunc.h
+++ b/sql/item_cmpfunc.h
@@ -769,6 +769,12 @@ class Item_func_in :public Item_int_func
   bool nulls_in_row();
   bool is_bool_func() { return 1; }
   CHARSET_INFO *compare_collation() { return cmp_collation.collation; }
+  /*
+    IN() protect from NULL only first argument, if construction like
+    "expression IN ()" will be allowed, we will need to check number of
+    argument here, because "NOT(NULL IN ())" is TRUE.
+  */
+  table_map not_null_tables() const { return args[0]->not_null_tables(); }
 };
 
 /* Functions used by where clause */
diff --git a/sql/item_strfunc.h b/sql/item_strfunc.h
index 6f6af415086..b01d75b8e02 100644
--- a/sql/item_strfunc.h
+++ b/sql/item_strfunc.h
@@ -95,6 +95,7 @@ public:
   String *val_str(String *);
   void fix_length_and_dec();
   const char *func_name() const { return "concat_ws"; }
+  table_map not_null_tables() const { return 0; }
 };
 
 class Item_func_reverse :public Item_str_func
diff --git a/sql/item_subselect.cc b/sql/item_subselect.cc
index ebc08545566..82954a664c0 100644
--- a/sql/item_subselect.cc
+++ b/sql/item_subselect.cc
@@ -1361,7 +1361,7 @@ int subselect_uniquesubquery_engine::exec()
   TABLE *table= tab->table;
   for (store_key **copy=tab->ref.key_copy ; *copy ; copy++)
   {
-    if (tab->ref.key_err= (*copy)->copy())
+    if ((tab->ref.key_err= (*copy)->copy()) & 1)
     {
       table->status= STATUS_NOT_FOUND;
       DBUG_RETURN(1);
@@ -1414,7 +1414,7 @@ int subselect_indexsubquery_engine::exec()
 
   for (store_key **copy=tab->ref.key_copy ; *copy ; copy++)
   {
-    if (tab->ref.key_err= (*copy)->copy())
+    if ((tab->ref.key_err= (*copy)->copy()) & 1)
     {
       table->status= STATUS_NOT_FOUND;
       DBUG_RETURN(1);
diff --git a/sql/mysqld.cc b/sql/mysqld.cc
index 99c96a69ceb..a757c47366d 100644
--- a/sql/mysqld.cc
+++ b/sql/mysqld.cc
@@ -5153,7 +5153,7 @@ The minimum value for this variable is 4096.",
    "Default pointer size to be used for MyISAM tables.",
    (gptr*) &myisam_data_pointer_size,
    (gptr*) &myisam_data_pointer_size, 0, GET_ULONG, REQUIRED_ARG,
-   4, 2, 8, 0, 1, 0},
+   4, 2, 7, 0, 1, 0},
   {"myisam_max_extra_sort_file_size", OPT_MYISAM_MAX_EXTRA_SORT_FILE_SIZE,
    "Used to help MySQL to decide when to use the slow but safe key cache index create method.",
    (gptr*) &global_system_variables.myisam_max_extra_sort_file_size,
diff --git a/sql/opt_range.cc b/sql/opt_range.cc
index 75cf9e6b3f0..2dd097cbaab 100644
--- a/sql/opt_range.cc
+++ b/sql/opt_range.cc
@@ -981,8 +981,7 @@ get_mm_parts(PARAM *param, COND *cond_func, Field *field,
     SEL_TREE *tree2= get_mm_parts(param, cond_func,
 				  field, Item_func::GT_FUNC,
                                   value, cmp_type);
-    if (!tree2)
-      DBUG_RETURN(0)
+    /* tree_or() will return 0 if tree2 is 0 */
     tree= tree_or(param,tree,tree2);
   }
   DBUG_RETURN(tree);
diff --git a/sql/sql_base.cc b/sql/sql_base.cc
index c9861790b06..7a36d33a42c 100644
--- a/sql/sql_base.cc
+++ b/sql/sql_base.cc
@@ -979,6 +979,7 @@ TABLE *open_table(THD *thd,const char *db,const char *table_name,
   if (table->timestamp_field)
     table->timestamp_field_type= table->timestamp_field->get_auto_set_type();
   DBUG_ASSERT(table->key_read == 0);
+  DBUG_ASSERT(table->insert_values == 0);
   DBUG_RETURN(table);
 }
 
diff --git a/sql/sql_insert.cc b/sql/sql_insert.cc
index deccc1d4dca..7d613ad6fbf 100644
--- a/sql/sql_insert.cc
+++ b/sql/sql_insert.cc
@@ -516,6 +516,10 @@ abort:
     ON DUPLICATE KEY ...
     we should be able to refer to sum1 in the ON DUPLICATE KEY part
 
+  WARNING
+    You MUST set table->insert_values to 0 after calling this function
+    before releasing the table object.
+
   RETURN VALUE
     0   OK
     -1  error (message is not sent to user)
diff --git a/sql/sql_parse.cc b/sql/sql_parse.cc
index c0283f81315..d7fd3239df5 100644
--- a/sql/sql_parse.cc
+++ b/sql/sql_parse.cc
@@ -2891,12 +2891,12 @@ unsent_create_error:
       /* revert changes for SP */
       lex->select_lex.resolve_mode= SELECT_LEX::INSERT_MODE;
       delete result;
-      insert_table->insert_values= 0;
       if (thd->net.report_error)
         res= -1;
     }
     else
       res= -1;
+    insert_table->insert_values= 0;        // Set by mysql_prepare_insert()
     first_local_table->next= tables;
     lex->select_lex.table_list.first= (byte*) first_local_table;
     break;
diff --git a/sql/sql_select.cc b/sql/sql_select.cc
index 1031773eeed..972fb4e0368 100644
--- a/sql/sql_select.cc
+++ b/sql/sql_select.cc
@@ -134,8 +134,8 @@ static void read_cached_record(JOIN_TAB *tab);
 static bool cmp_buffer_with_ref(JOIN_TAB *tab);
 static bool setup_new_fields(THD *thd,TABLE_LIST *tables,List<Item> &fields,
 			     List<Item> &all_fields,ORDER *new_order);
-static ORDER *create_distinct_group(THD *thd, ORDER *order,
-				    List<Item> &fields,
+static ORDER *create_distinct_group(THD *thd, Item **ref_pointer_array,
+                                    ORDER *order, List<Item> &fields,
 				    bool *all_order_by_fields_used);
 static bool test_if_subpart(ORDER *a,ORDER *b);
 static TABLE *get_sort_by_table(ORDER *a,ORDER *b,TABLE_LIST *tables);
@@ -642,7 +642,8 @@ JOIN::optimize()
     bool all_order_fields_used;
     if (order)
       skip_sort_order= test_if_skip_sort_order(tab, order, select_limit, 1);
-    if ((group_list=create_distinct_group(thd, order, fields_list,
+    if ((group_list=create_distinct_group(thd, select_lex->ref_pointer_array,
+                                          order, fields_list,
 				          &all_order_fields_used)))
     {
       bool skip_group= (skip_sort_order &&
@@ -8221,11 +8222,13 @@ cp_buffer_from_ref(THD *thd, TABLE_REF *ref)
   enum enum_check_fields save_count_cuted_fields= thd->count_cuted_fields;
   thd->count_cuted_fields= CHECK_FIELD_IGNORE;
   for (store_key **copy=ref->key_copy ; *copy ; copy++)
-    if ((*copy)->copy())
+  {
+    if ((*copy)->copy() & 1)
     {
       thd->count_cuted_fields= save_count_cuted_fields;
-      return 1;					// Something went wrong
+      return 1;                                 // Something went wrong
     }
+  }
   thd->count_cuted_fields= save_count_cuted_fields;
   return 0;
 }
@@ -8436,12 +8439,14 @@ setup_new_fields(THD *thd,TABLE_LIST *tables,List<Item> &fields,
 */
 
 static ORDER *
-create_distinct_group(THD *thd, ORDER *order_list, List<Item> &fields, 
+create_distinct_group(THD *thd, Item **ref_pointer_array,
+                      ORDER *order_list, List<Item> &fields, 
 		      bool *all_order_by_fields_used)
 {
   List_iterator<Item> li(fields);
   Item *item;
   ORDER *order,*group,**prev;
+  uint index= 0;
 
   *all_order_by_fields_used= 1;
   while ((item=li++))
@@ -8473,11 +8478,17 @@ create_distinct_group(THD *thd, ORDER *order_list, List<Item> &fields,
       ORDER *ord=(ORDER*) thd->calloc(sizeof(ORDER));
       if (!ord)
 	return 0;
-      ord->item=li.ref();
+      /*
+        We have here only field_list (not all_field_list), so we can use
+        simple indexing of ref_pointer_array (order in the array and in the
+        list are same)
+      */
+      ord->item= ref_pointer_array + index;
       ord->asc=1;
       *prev=ord;
       prev= &ord->next;
     }
+    index++;
   }
   *prev=0;
   return group;
@@ -8721,7 +8732,7 @@ setup_copy_fields(THD *thd, TMP_TABLE_PARAM *param,
 {
   Item *pos;
   List_iterator_fast<Item> li(all_fields);
-  Copy_field *copy;
+  Copy_field *copy= NULL;
   res_selected_fields.empty();
   res_all_fields.empty();
   List_iterator_fast<Item> itr(res_all_fields);
@@ -8729,7 +8740,8 @@ setup_copy_fields(THD *thd, TMP_TABLE_PARAM *param,
   uint i, border= all_fields.elements - elements;
   DBUG_ENTER("setup_copy_fields");
 
-  if (!(copy=param->copy_field= new Copy_field[param->field_count]))
+  if (param->field_count && 
+      !(copy=param->copy_field= new Copy_field[param->field_count]))
     goto err2;
 
   param->copy_funcs.empty();
@@ -8813,7 +8825,8 @@ setup_copy_fields(THD *thd, TMP_TABLE_PARAM *param,
   DBUG_RETURN(0);
 
  err:
-  delete [] param->copy_field;			// This is never 0
+  if (copy)
+    delete [] param->copy_field;
   param->copy_field=0;
 err2:
   DBUG_RETURN(TRUE);
diff --git a/sql/sql_select.h b/sql/sql_select.h
index 7e69eca4683..c7440fe4c3a 100644
--- a/sql/sql_select.h
+++ b/sql/sql_select.h
@@ -356,6 +356,7 @@ class store_key :public Sql_alloc
   char *null_ptr;
   char err;
  public:
+  enum store_key_result { STORE_KEY_OK, STORE_KEY_FATAL, STORE_KEY_CONV };
   store_key(THD *thd, Field *field_arg, char *ptr, char *null, uint length)
     :null_ptr(null),err(0)
   {
@@ -371,7 +372,7 @@ class store_key :public Sql_alloc
     }
   }
   virtual ~store_key() {}			/* Not actually needed */
-  virtual bool copy()=0;
+  virtual enum store_key_result copy()=0;
   virtual const char *name() const=0;
 };
 
@@ -392,10 +393,10 @@ class store_key_field: public store_key
       copy_field.set(to_field,from_field,0);
     }
   }
-  bool copy()
+  enum store_key_result copy()
   {
     copy_field.do_copy(&copy_field);
-    return err != 0;
+    return err != 0 ? STORE_KEY_FATAL : STORE_KEY_OK;
   }
   const char *name() const { return field_name; }
 };
@@ -412,9 +413,11 @@ public:
 	       null_ptr_arg ? null_ptr_arg : item_arg->maybe_null ?
 	       &err : NullS, length), item(item_arg)
   {}
-  bool copy()
+  enum store_key_result copy()
   {
-    return item->save_in_field(to_field, 1) || err != 0;
+    int res= item->save_in_field(to_field, 1);
+    return (err != 0 || res > 2 ? STORE_KEY_FATAL : (store_key_result) res); 
+	                 
   }
   const char *name() const { return "func"; }
 };
@@ -432,15 +435,19 @@ public:
 		    &err : NullS, length, item_arg), inited(0)
   {
   }
-  bool copy()
+  enum store_key_result copy()
   {
+    int res;
     if (!inited)
     {
       inited=1;
-      if (item->save_in_field(to_field, 1))
-	err= 1;
+      if ((res= item->save_in_field(to_field, 1)))
+      {       
+        if (!err)
+          err= res;
+      }
     }
-    return err != 0;
+    return (err > 2 ?  STORE_KEY_FATAL : (store_key_result) err);
   }
   const char *name() const { return "const"; }
 };
diff --git a/strings/ctype-ucs2.c b/strings/ctype-ucs2.c
index 12c1ae905cf..c3caaeadfb3 100644
--- a/strings/ctype-ucs2.c
+++ b/strings/ctype-ucs2.c
@@ -209,7 +209,7 @@ static int my_strnncoll_ucs2(CHARSET_INFO *cs,
     t_wc = uni_plane[plane] ? uni_plane[plane][t_wc & 0xFF].sort : t_wc;
     if ( s_wc != t_wc )
     {
-      return  ((int) s_wc) - ((int) t_wc);
+      return  s_wc > t_wc ? 1 : -1;
     }
     
     s+=s_res;
@@ -267,7 +267,7 @@ static int my_strnncollsp_ucs2(CHARSET_INFO *cs __attribute__((unused)),
     int t_wc = uni_plane[t[0]] ? (int) uni_plane[t[0]][t[1]].sort : 
                                  (((int) t[0]) << 8) + (int) t[1];
     if ( s_wc != t_wc )
-      return  s_wc - t_wc;
+      return  s_wc > t_wc ? 1 : -1;
 
     s+= 2;
     t+= 2;
@@ -1343,7 +1343,7 @@ int my_strnncoll_ucs2_bin(CHARSET_INFO *cs,
     }
     if ( s_wc != t_wc )
     {
-      return  ((int) s_wc) - ((int) t_wc);
+      return  s_wc > t_wc ? 1 : -1;
     }
     
     s+=s_res;
diff --git a/strings/ctype-utf8.c b/strings/ctype-utf8.c
index 230b44796e8..f5192b26ce2 100644
--- a/strings/ctype-utf8.c
+++ b/strings/ctype-utf8.c
@@ -2000,7 +2000,7 @@ static int my_strnncoll_utf8(CHARSET_INFO *cs,
     t_wc = uni_plane[plane] ? uni_plane[plane][t_wc & 0xFF].sort : t_wc;
     if ( s_wc != t_wc )
     {
-      return  ((int) s_wc) - ((int) t_wc);
+      return  s_wc > t_wc ? 1 : -1;
     }
 
     s+=s_res;
@@ -2065,7 +2065,7 @@ static int my_strnncollsp_utf8(CHARSET_INFO *cs,
     t_wc = uni_plane[plane] ? uni_plane[plane][t_wc & 0xFF].sort : t_wc;
     if ( s_wc != t_wc )
     {
-      return  ((int) s_wc) - ((int) t_wc);
+      return  s_wc > t_wc ? 1 : -1;
     }
 
     s+=s_res;