Merge 5.1.26-rc to 5.1-build for further pushing it to the main tree.

mysql-test/extra/rpl_tests/rpl_row_basic.test

@@ -259,7 +259,7 @@ DELETE FROM t1;
 query_vertical SELECT COUNT(*) FROM t1 ORDER BY c1,c2;
 sync_slave_with_master;
 set @@global.slave_exec_mode= default;
-let $last_error = query_get_value("SHOW SLAVE STATUS", Last_SQL_Errno, 1);
+let $last_error = query_get_value("SHOW SLAVE STATUS", Last_SQL_Error, 1);
 disable_query_log;
 eval SELECT "$last_error" AS Last_SQL_Error;
 enable_query_log;
@@ -288,3 +288,150 @@ SELECT * FROM t1;
 connection master;
 DROP TABLE IF EXISTS t1,t2,t3,t4,t5,t6,t7,t8;
 sync_slave_with_master;
+
+#
+# BUG#37426: RBR breaks for CHAR() UTF8 fields > 85 chars
+#
+
+# We have 4 combinations to test with respect to the field length
+# (i.e., the number of bytes) of the CHAR fields:
+#
+# 1. Replicating from CHAR<256 to CHAR<256 
+# 2. Replicating from CHAR<256 to CHAR>255
+# 3. Replicating from CHAR>255 to CHAR<256
+# 4. Replicating from CHAR>255 to CHAR>255
+
+# We also make a special case of using the max size of a field on the
+# master, i.e. CHAR(255) in UTF-8, giving another three cases.
+#
+# 5. Replicating UTF-8 CHAR(255) to CHAR(<256)
+# 6. Replicating UTF-8 CHAR(255) to CHAR(>255)
+# 7. Replicating UTF-8 CHAR(255) to CHAR(255) UTF-8
+
+connection master;
+CREATE TABLE t1 (i INT NOT NULL,
+                 c CHAR(16) CHARACTER SET utf8 NOT NULL,
+                 j INT NOT NULL);
+
+CREATE TABLE t2 (i INT NOT NULL,
+                 c CHAR(16) CHARACTER SET utf8 NOT NULL,
+                 j INT NOT NULL);
+
+sync_slave_with_master;
+ALTER TABLE t2 MODIFY c CHAR(128) CHARACTER SET utf8 NOT NULL;
+
+connection master;
+CREATE TABLE t3 (i INT NOT NULL,
+                 c CHAR(128) CHARACTER SET utf8 NOT NULL,
+                 j INT NOT NULL);
+sync_slave_with_master;
+ALTER TABLE t3 MODIFY c CHAR(16) CHARACTER SET utf8 NOT NULL;
+
+connection master;
+CREATE TABLE t4 (i INT NOT NULL,
+                 c CHAR(128) CHARACTER SET utf8 NOT NULL,
+                 j INT NOT NULL);
+
+CREATE TABLE t5 (i INT NOT NULL,
+                 c CHAR(255) CHARACTER SET utf8 NOT NULL,
+                 j INT NOT NULL);
+sync_slave_with_master;
+ALTER TABLE t5 MODIFY c CHAR(16) CHARACTER SET utf8 NOT NULL;
+
+connection master;
+CREATE TABLE t6 (i INT NOT NULL,
+                 c CHAR(255) CHARACTER SET utf8 NOT NULL,
+                 j INT NOT NULL);
+sync_slave_with_master;
+ALTER TABLE t6 MODIFY c CHAR(128) CHARACTER SET utf8 NOT NULL;
+
+connection master;
+CREATE TABLE t7 (i INT NOT NULL,
+                 c CHAR(255) CHARACTER SET utf8 NOT NULL,
+                 j INT NOT NULL);
+
+--echo [expecting slave to replicate correctly]
+connection master;
+INSERT INTO t1 VALUES (1, "", 1);
+INSERT INTO t1 VALUES (2, repeat(_utf8'a', 16), 2);
+
+let $diff_table_1=master:test.t1;
+let $diff_table_2=slave:test.t1;
+source include/diff_tables.inc;
+
+--echo [expecting slave to replicate correctly]
+connection master;
+INSERT INTO t2 VALUES (1, "", 1);
+INSERT INTO t2 VALUES (2, repeat(_utf8'a', 16), 2);
+
+let $diff_table_1=master:test.t2;
+let $diff_table_2=slave:test.t2;
+source include/diff_tables.inc;
+
+--echo [expecting slave to stop]
+connection master;
+INSERT INTO t3 VALUES (1, "", 1);
+INSERT INTO t3 VALUES (2, repeat(_utf8'a', 128), 2);
+
+connection slave;
+source include/wait_for_slave_sql_to_stop.inc;
+let $last_error = query_get_value("SHOW SLAVE STATUS", Last_SQL_Error, 1);
+disable_query_log;
+eval SELECT "$last_error" AS Last_SQL_Error;
+enable_query_log;
+SET GLOBAL SQL_SLAVE_SKIP_COUNTER=8;
+START SLAVE;
+source include/wait_for_slave_to_start.inc;
+
+--echo [expecting slave to replicate correctly]
+connection master;
+INSERT INTO t4 VALUES (1, "", 1);
+INSERT INTO t4 VALUES (2, repeat(_utf8'a', 128), 2);
+
+let $diff_table_1=master:test.t4;
+let $diff_table_2=slave:test.t4;
+source include/diff_tables.inc;
+
+--echo [expecting slave to stop]
+connection master;
+INSERT INTO t5 VALUES (1, "", 1);
+INSERT INTO t5 VALUES (2, repeat(_utf8'a', 255), 2);
+
+connection slave;
+source include/wait_for_slave_sql_to_stop.inc;
+let $last_error = query_get_value("SHOW SLAVE STATUS", Last_SQL_Error, 1);
+disable_query_log;
+eval SELECT "$last_error" AS Last_SQL_Error;
+enable_query_log;
+SET GLOBAL SQL_SLAVE_SKIP_COUNTER=8;
+START SLAVE;
+source include/wait_for_slave_to_start.inc;
+
+--echo [expecting slave to stop]
+connection master;
+INSERT INTO t6 VALUES (1, "", 1);
+INSERT INTO t6 VALUES (2, repeat(_utf8'a', 255), 2);
+
+connection slave;
+source include/wait_for_slave_sql_to_stop.inc;
+let $last_error = query_get_value("SHOW SLAVE STATUS", Last_SQL_Error, 1);
+disable_query_log;
+eval SELECT "$last_error" AS Last_SQL_Error;
+enable_query_log;
+SET GLOBAL SQL_SLAVE_SKIP_COUNTER=8;
+START SLAVE;
+source include/wait_for_slave_to_start.inc;
+
+--echo [expecting slave to replicate correctly]
+connection master;
+INSERT INTO t7 VALUES (1, "", 1);
+INSERT INTO t7 VALUES (2, repeat(_utf8'a', 255), 2);
+
+let $diff_table_1=master:test.t7;
+let $diff_table_2=slave:test.t7;
+source include/diff_tables.inc;
+
+connection master;
+drop table t1, t2, t3, t4, t5, t6, t7;
+sync_slave_with_master;
+

mysql-test/r/varbinary.result

@@ -95,3 +95,34 @@ table_28127_b	CREATE TABLE `table_28127_b` (
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 drop table table_28127_a;
 drop table table_28127_b;
+select 0b01000001;
+0b01000001
+A
+select 0x41;
+0x41
+A
+select b'01000001';
+b'01000001'
+A
+select x'41', 0+x'41';
+x'41'	0+x'41'
+A	65
+select N'abc', length(N'abc');
+abc	length(N'abc')
+abc	3
+select N'', length(N'');
+	length(N'')
+	0
+select '', length('');
+	length('')
+	0
+select b'', 0+b'';
+b''	0+b''
+	0
+select x'', 0+x'';
+x''	0+x''
+	0
+select 0x;
+ERROR 42S22: Unknown column '0x' in 'field list'
+select 0b;
+ERROR 42S22: Unknown column '0b' in 'field list'

mysql-test/suite/binlog/r/binlog_base64_flag.result

@@ -66,4 +66,28 @@ a
 1
 1
 3
-drop table t1;
+CREATE TABLE char128_utf8 ( 
+i1 INT NOT NULL, 
+c CHAR(128) CHARACTER SET utf8 NOT NULL, 
+i2 INT NOT NULL);
+CREATE TABLE char63_utf8 (
+i1 INT NOT NULL,
+c CHAR(63) CHARACTER SET utf8 NOT NULL,
+i2 INT NOT NULL);
+BINLOG '
+MuNkSA8BAAAAZgAAAGoAAAAAAAQANS4xLjI1LXJjLWRlYnVnLWxvZwAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAy42RIEzgNAAgAEgAEBAQEEgAAUwAEGggAAAAICAgC
+';
+BINLOG '
+3u9kSBMBAAAANgAAAJYBAAAAABAAAAAAAAAABHRlc3QAC2NoYXI2M191dGY4AAMD/gMC/r0A
+3u9kSBcBAAAAKgAAAMABAAAQABAAAAAAAAEAA//4AQAAAAMxMjMBAAAA
+';
+SELECT * FROM char63_utf8;
+i1	c	i2
+1	123	1
+BINLOG '
+iONkSBMBAAAANwAAAJkBAAAAABAAAAAAAAAABHRlc3QADGNoYXIxMjhfdXRmOAADA/4DAv6AAA==
+iONkSBcBAAAAKwAAAMQBAAAQABAAAAAAAAEAA//4AQAAAAMAMTIzAQAAAA==
+';
+ERROR HY000: master may suffer from http://bugs.mysql.com/bug.php?id=37426 so slave stops; check error log on slave for more info
+drop table t1, char63_utf8, char128_utf8;

mysql-test/suite/binlog/t/binlog_base64_flag.test

@@ -104,6 +104,49 @@ Dl1YRxcBAAAAIgAAAFYBAAAQABAAAAAAAAEAAf/+BQAAAA==
 # the above line should fail and 5 should not be in the binlog.
 select * from t1;
 
+# Test that BUG#37426 is triggered.
 
-# clean up
-drop table t1;
+CREATE TABLE char128_utf8 ( 
+    i1 INT NOT NULL, 
+    c CHAR(128) CHARACTER SET utf8 NOT NULL, 
+    i2 INT NOT NULL);
+CREATE TABLE char63_utf8 (
+      i1 INT NOT NULL,
+      c CHAR(63) CHARACTER SET utf8 NOT NULL,
+      i2 INT NOT NULL);
+
+#
+# This is the format description log event
+#
+
+BINLOG '
+MuNkSA8BAAAAZgAAAGoAAAAAAAQANS4xLjI1LXJjLWRlYnVnLWxvZwAAAAAAAAAAAAAAAAAAAAAA
+AAAAAAAAAAAAAAAAAAAy42RIEzgNAAgAEgAEBAQEEgAAUwAEGggAAAAICAgC
+';
+
+# ... this event corresponding to
+#
+#    INSERT INTO char63_utf8 VALUES ( 1, "123", 1 )
+#
+# The binlog event below shall not trigger the bug check
+
+BINLOG '
+3u9kSBMBAAAANgAAAJYBAAAAABAAAAAAAAAABHRlc3QAC2NoYXI2M191dGY4AAMD/gMC/r0A
+3u9kSBcBAAAAKgAAAMABAAAQABAAAAAAAAEAA//4AQAAAAMxMjMBAAAA
+';
+SELECT * FROM char63_utf8;
+
+# ... and this is an event corresponding to
+#
+#    INSERT INTO char128_utf8 VALUES ( 1, "123", 1 )
+#
+# The binlog event below shall trigger the bug check and produce an error
+#
+
+error ER_UNKNOWN_ERROR;
+BINLOG '
+iONkSBMBAAAANwAAAJkBAAAAABAAAAAAAAAABHRlc3QADGNoYXIxMjhfdXRmOAADA/4DAv6AAA==
+iONkSBcBAAAAKwAAAMQBAAAQABAAAAAAAAEAA//4AQAAAAMAMTIzAQAAAA==
+';
+
+drop table t1, char63_utf8, char128_utf8;

mysql-test/suite/bugs/combinations

+[row]
+--binlog-format=row
+
+[stmt]
+--binlog-format=statement
+
+[mix]
+--binlog-format=mixed

mysql-test/suite/bugs/r/rpl_bug37426.result

+stop slave;
+drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
+reset master;
+reset slave;
+drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
+start slave;
+CREATE TABLE char128_utf8 ( 
+i1 INT NOT NULL, 
+c CHAR(128) CHARACTER SET utf8 NOT NULL, 
+i2 INT NOT NULL);
+INSERT INTO char128_utf8 VALUES ( 1, "123", 1 );
+SELECT * FROM char128_utf8;
+i1	c	i2
+1	123	1
+SELECT * FROM char128_utf8;
+i1	c	i2
+1	123	1

mysql-test/suite/bugs/t/rpl_bug37426.test

+#############################################################
+# Author: Mats Kindahl <mats@mysql.com>
+# Date:   2008-06-18
+# Purpose: Test for BUG#37426
+#   RBR breaks for CHAR() UTF8 fields > 85 chars
+#############################################################
+
+source include/master-slave.inc;
+source include/have_binlog_format_row.inc;
+
+connection master;
+CREATE TABLE char128_utf8 ( 
+    i1 INT NOT NULL, 
+    c CHAR(128) CHARACTER SET utf8 NOT NULL, 
+    i2 INT NOT NULL);
+
+INSERT INTO char128_utf8 VALUES ( 1, "123", 1 );
+
+SELECT * FROM char128_utf8;
+sync_slave_with_master;
+
+SELECT * FROM char128_utf8;

mysql-test/suite/rpl/r/rpl_row_basic_2myisam.result

@@ -437,7 +437,7 @@ SELECT COUNT(*) FROM t1 ORDER BY c1,c2;
 COUNT(*)	0
 set @@global.slave_exec_mode= default;
 Last_SQL_Error
-0
+
 SELECT COUNT(*) FROM t1 ORDER BY c1,c2;
 COUNT(*)	0
 **** Test for BUG#37076 ****
@@ -451,3 +451,66 @@ SELECT * FROM t1;
 a	b	c
 2005-11-14 01:01:01	2005-11-14 01:01:02	2005-11-14
 DROP TABLE IF EXISTS t1,t2,t3,t4,t5,t6,t7,t8;
+CREATE TABLE t1 (i INT NOT NULL,
+c CHAR(16) CHARACTER SET utf8 NOT NULL,
+j INT NOT NULL);
+CREATE TABLE t2 (i INT NOT NULL,
+c CHAR(16) CHARACTER SET utf8 NOT NULL,
+j INT NOT NULL);
+ALTER TABLE t2 MODIFY c CHAR(128) CHARACTER SET utf8 NOT NULL;
+CREATE TABLE t3 (i INT NOT NULL,
+c CHAR(128) CHARACTER SET utf8 NOT NULL,
+j INT NOT NULL);
+ALTER TABLE t3 MODIFY c CHAR(16) CHARACTER SET utf8 NOT NULL;
+CREATE TABLE t4 (i INT NOT NULL,
+c CHAR(128) CHARACTER SET utf8 NOT NULL,
+j INT NOT NULL);
+CREATE TABLE t5 (i INT NOT NULL,
+c CHAR(255) CHARACTER SET utf8 NOT NULL,
+j INT NOT NULL);
+ALTER TABLE t5 MODIFY c CHAR(16) CHARACTER SET utf8 NOT NULL;
+CREATE TABLE t6 (i INT NOT NULL,
+c CHAR(255) CHARACTER SET utf8 NOT NULL,
+j INT NOT NULL);
+ALTER TABLE t6 MODIFY c CHAR(128) CHARACTER SET utf8 NOT NULL;
+CREATE TABLE t7 (i INT NOT NULL,
+c CHAR(255) CHARACTER SET utf8 NOT NULL,
+j INT NOT NULL);
+[expecting slave to replicate correctly]
+INSERT INTO t1 VALUES (1, "", 1);
+INSERT INTO t1 VALUES (2, repeat(_utf8'a', 16), 2);
+Comparing tables master:test.t1 and slave:test.t1
+[expecting slave to replicate correctly]
+INSERT INTO t2 VALUES (1, "", 1);
+INSERT INTO t2 VALUES (2, repeat(_utf8'a', 16), 2);
+Comparing tables master:test.t2 and slave:test.t2
+[expecting slave to stop]
+INSERT INTO t3 VALUES (1, "", 1);
+INSERT INTO t3 VALUES (2, repeat(_utf8'a', 128), 2);
+Last_SQL_Error
+Table definition on master and slave does not match: Column 1 size mismatch - master has size 384, test.t3 on slave has size 49. Master's column size should be <= the slave's column size.
+SET GLOBAL SQL_SLAVE_SKIP_COUNTER=8;
+START SLAVE;
+[expecting slave to replicate correctly]
+INSERT INTO t4 VALUES (1, "", 1);
+INSERT INTO t4 VALUES (2, repeat(_utf8'a', 128), 2);
+Comparing tables master:test.t4 and slave:test.t4
+[expecting slave to stop]
+INSERT INTO t5 VALUES (1, "", 1);
+INSERT INTO t5 VALUES (2, repeat(_utf8'a', 255), 2);
+Last_SQL_Error
+Table definition on master and slave does not match: Column 1 size mismatch - master has size 765, test.t5 on slave has size 49. Master's column size should be <= the slave's column size.
+SET GLOBAL SQL_SLAVE_SKIP_COUNTER=8;
+START SLAVE;
+[expecting slave to stop]
+INSERT INTO t6 VALUES (1, "", 1);
+INSERT INTO t6 VALUES (2, repeat(_utf8'a', 255), 2);
+Last_SQL_Error
+Table definition on master and slave does not match: Column 1 size mismatch - master has size 765, test.t6 on slave has size 385. Master's column size should be <= the slave's column size.
+SET GLOBAL SQL_SLAVE_SKIP_COUNTER=8;
+START SLAVE;
+[expecting slave to replicate correctly]
+INSERT INTO t7 VALUES (1, "", 1);
+INSERT INTO t7 VALUES (2, repeat(_utf8'a', 255), 2);
+Comparing tables master:test.t7 and slave:test.t7
+drop table t1, t2, t3, t4, t5, t6, t7;

mysql-test/suite/rpl/r/rpl_row_basic_3innodb.result

@@ -437,7 +437,7 @@ SELECT COUNT(*) FROM t1 ORDER BY c1,c2;
 COUNT(*)	0
 set @@global.slave_exec_mode= default;
 Last_SQL_Error
-0
+
 SELECT COUNT(*) FROM t1 ORDER BY c1,c2;
 COUNT(*)	0
 **** Test for BUG#37076 ****
@@ -451,3 +451,66 @@ SELECT * FROM t1;
 a	b	c
 2005-11-14 01:01:01	2005-11-14 01:01:02	2005-11-14
 DROP TABLE IF EXISTS t1,t2,t3,t4,t5,t6,t7,t8;
+CREATE TABLE t1 (i INT NOT NULL,
+c CHAR(16) CHARACTER SET utf8 NOT NULL,
+j INT NOT NULL);
+CREATE TABLE t2 (i INT NOT NULL,
+c CHAR(16) CHARACTER SET utf8 NOT NULL,
+j INT NOT NULL);
+ALTER TABLE t2 MODIFY c CHAR(128) CHARACTER SET utf8 NOT NULL;
+CREATE TABLE t3 (i INT NOT NULL,
+c CHAR(128) CHARACTER SET utf8 NOT NULL,
+j INT NOT NULL);
+ALTER TABLE t3 MODIFY c CHAR(16) CHARACTER SET utf8 NOT NULL;
+CREATE TABLE t4 (i INT NOT NULL,
+c CHAR(128) CHARACTER SET utf8 NOT NULL,
+j INT NOT NULL);
+CREATE TABLE t5 (i INT NOT NULL,
+c CHAR(255) CHARACTER SET utf8 NOT NULL,
+j INT NOT NULL);
+ALTER TABLE t5 MODIFY c CHAR(16) CHARACTER SET utf8 NOT NULL;
+CREATE TABLE t6 (i INT NOT NULL,
+c CHAR(255) CHARACTER SET utf8 NOT NULL,
+j INT NOT NULL);
+ALTER TABLE t6 MODIFY c CHAR(128) CHARACTER SET utf8 NOT NULL;
+CREATE TABLE t7 (i INT NOT NULL,
+c CHAR(255) CHARACTER SET utf8 NOT NULL,
+j INT NOT NULL);
+[expecting slave to replicate correctly]
+INSERT INTO t1 VALUES (1, "", 1);
+INSERT INTO t1 VALUES (2, repeat(_utf8'a', 16), 2);
+Comparing tables master:test.t1 and slave:test.t1
+[expecting slave to replicate correctly]
+INSERT INTO t2 VALUES (1, "", 1);
+INSERT INTO t2 VALUES (2, repeat(_utf8'a', 16), 2);
+Comparing tables master:test.t2 and slave:test.t2
+[expecting slave to stop]
+INSERT INTO t3 VALUES (1, "", 1);
+INSERT INTO t3 VALUES (2, repeat(_utf8'a', 128), 2);
+Last_SQL_Error
+Table definition on master and slave does not match: Column 1 size mismatch - master has size 384, test.t3 on slave has size 49. Master's column size should be <= the slave's column size.
+SET GLOBAL SQL_SLAVE_SKIP_COUNTER=8;
+START SLAVE;
+[expecting slave to replicate correctly]
+INSERT INTO t4 VALUES (1, "", 1);
+INSERT INTO t4 VALUES (2, repeat(_utf8'a', 128), 2);
+Comparing tables master:test.t4 and slave:test.t4
+[expecting slave to stop]
+INSERT INTO t5 VALUES (1, "", 1);
+INSERT INTO t5 VALUES (2, repeat(_utf8'a', 255), 2);
+Last_SQL_Error
+Table definition on master and slave does not match: Column 1 size mismatch - master has size 765, test.t5 on slave has size 49. Master's column size should be <= the slave's column size.
+SET GLOBAL SQL_SLAVE_SKIP_COUNTER=8;
+START SLAVE;
+[expecting slave to stop]
+INSERT INTO t6 VALUES (1, "", 1);
+INSERT INTO t6 VALUES (2, repeat(_utf8'a', 255), 2);
+Last_SQL_Error
+Table definition on master and slave does not match: Column 1 size mismatch - master has size 765, test.t6 on slave has size 385. Master's column size should be <= the slave's column size.
+SET GLOBAL SQL_SLAVE_SKIP_COUNTER=8;
+START SLAVE;
+[expecting slave to replicate correctly]
+INSERT INTO t7 VALUES (1, "", 1);
+INSERT INTO t7 VALUES (2, repeat(_utf8'a', 255), 2);
+Comparing tables master:test.t7 and slave:test.t7
+drop table t1, t2, t3, t4, t5, t6, t7;

mysql-test/t/varbinary.test

@@ -104,3 +104,31 @@ show create table table_28127_b;
 drop table table_28127_a;
 drop table table_28127_b;
 
+#
+# Bug#35658 (An empty binary value leads to mysqld crash)
+#
+
+select 0b01000001;
+
+select 0x41;
+
+select b'01000001';
+
+select x'41', 0+x'41';
+
+select N'abc', length(N'abc');
+
+select N'', length(N'');
+
+select '', length('');
+
+select b'', 0+b'';
+
+select x'', 0+x'';
+
+--error ER_BAD_FIELD_ERROR
+select 0x;
+
+--error ER_BAD_FIELD_ERROR
+select 0b;
+

scripts/make_binary_distribution.sh

@@ -92,6 +92,7 @@ if [ x"$PLATFORM" = x"" ] ; then
   system=`echo $system | sed -e 's/darwin6.*/osx10.2/g'`
   system=`echo $system | sed -e 's/darwin7.*/osx10.3/g'`
   system=`echo $system | sed -e 's/darwin8.*/osx10.4/g'`
+  system=`echo $system | sed -e 's/darwin9.*/osx10.5/g'`
   system=`echo $system | sed -e 's/\(aix4.3\).*/\1/g'`
   system=`echo $system | sed -e 's/\(aix5.1\).*/\1/g'`
   system=`echo $system | sed -e 's/\(aix5.2\).*/\1/g'`

sql/field.cc

@@ -27,6 +27,8 @@
 
 #include "mysql_priv.h"
 #include "sql_select.h"
+#include "rpl_rli.h"                            // Pull in Relay_log_info
+#include "slave.h"                              // Pull in rpl_master_has_bug()
 #include <m_ctype.h>
 #include <errno.h>
 #ifdef HAVE_FCONVERT
@@ -1375,7 +1377,8 @@ bool Field::send_binary(Protocol *protocol)
    @retval 0 if this field's size is < the source field's size
    @retval 1 if this field's size is >= the source field's size
 */
-int Field::compatible_field_size(uint field_metadata)
+int Field::compatible_field_size(uint field_metadata,
+                                 const Relay_log_info *rli_arg __attribute__((unused)))
 {
   uint const source_size= pack_length_from_metadata(field_metadata);
   uint const destination_size= row_pack_length();
@@ -2837,7 +2840,8 @@ uint Field_new_decimal::pack_length_from_metadata(uint field_metadata)
    @retval 0 if this field's size is < the source field's size
    @retval 1 if this field's size is >= the source field's size
 */
-int Field_new_decimal::compatible_field_size(uint field_metadata)
+int Field_new_decimal::compatible_field_size(uint field_metadata,
+                                             const Relay_log_info * __attribute__((unused)))
 {
   int compatible= 0;
   uint const source_precision= (field_metadata >> 8U) & 0x00ff;
@@ -4037,7 +4041,6 @@ Field_real::pack(uchar *to, const uchar *from,
 {
   DBUG_ENTER("Field_real::pack");
   DBUG_ASSERT(max_length >= pack_length());
-  DBUG_PRINT("debug", ("pack_length(): %u", pack_length()));
 #ifdef WORDS_BIGENDIAN
   if (low_byte_first != table->s->db_low_byte_first)
   {
@@ -4056,7 +4059,6 @@ Field_real::unpack(uchar *to, const uchar *from,
                    uint param_data, bool low_byte_first)
 {
   DBUG_ENTER("Field_real::unpack");
-  DBUG_PRINT("debug", ("pack_length(): %u", pack_length()));
 #ifdef WORDS_BIGENDIAN
   if (low_byte_first != table->s->db_low_byte_first)
   {
@@ -6638,6 +6640,36 @@ my_decimal *Field_string::val_decimal(my_decimal *decimal_value)
 }
 
 
+struct Check_field_param {
+  Field *field;
+};
+
+static bool
+check_field_for_37426(const void *param_arg)
+{
+  Check_field_param *param= (Check_field_param*) param_arg;
+  DBUG_ASSERT(param->field->real_type() == MYSQL_TYPE_STRING);
+  DBUG_PRINT("debug", ("Field %s - type: %d, size: %d",
+                       param->field->field_name,
+                       param->field->real_type(),
+                       param->field->row_pack_length()));
+  return param->field->row_pack_length() > 255;
+}
+
+
+int Field_string::compatible_field_size(uint field_metadata,
+                                        const Relay_log_info *rli_arg)
+{
+#ifdef HAVE_REPLICATION
+  const Check_field_param check_param = { this };
+  if (rpl_master_has_bug(rli_arg, 37426, TRUE,
+                         check_field_for_37426, &check_param))
+    return FALSE;                        // Not compatible field sizes
+#endif
+  return Field::compatible_field_size(field_metadata, rli_arg);
+}
+
+
 int Field_string::cmp(const uchar *a_ptr, const uchar *b_ptr)
 {
   uint a_len, b_len;
@@ -6724,6 +6756,9 @@ uchar *Field_string::pack(uchar *to, const uchar *from,
    @c param_data argument contains the result of field->real_type() from
    the master.
 
+   @note For information about how the length is packed, see @c
+   Field_string::do_save_field_metadata
+
    @param   to         Destination of the data
    @param   from       Source of the data
    @param   param_data Real type (upper) and length (lower) values
@@ -6736,10 +6771,24 @@ Field_string::unpack(uchar *to,
                      uint param_data,
                      bool low_byte_first __attribute__((unused)))
 {
-  uint from_length=
-    param_data ? min(param_data & 0x00ff, field_length) : field_length;
-  uint length;
+  uint from_length, length;
 
+  /*
+    Compute the declared length of the field on the master. This is
+    used to decide if one or two bytes should be read as length.
+   */
+  if (param_data)
+    from_length= (((param_data >> 4) & 0x300) ^ 0x300) + (param_data & 0x00ff);
+  else
+    from_length= field_length;
+
+  DBUG_PRINT("debug",
+             ("param_data: 0x%x, field_length: %u, from_length: %u",
+              param_data, field_length, from_length));
+  /*
+    Compute the actual length of the data by reading one or two bits
+    (depending on the declared field length on the master).
+   */
   if (from_length > 255)
   {
     length= uint2korr(from);
@@ -6762,14 +6811,37 @@ Field_string::unpack(uchar *to,
    second byte of the field metadata array at index of *metadata_ptr and
    *(metadata_ptr + 1).
 
+   @note In order to be able to handle lengths exceeding 255 and be
+   backwards-compatible with pre-5.1.26 servers, an extra two bits of
+   the length has been added to the metadata in such a way that if
+   they are set, a new unrecognized type is generated.  This will
+   cause pre-5.1-26 servers to stop due to a field type mismatch,
+   while new servers will be able to extract the extra bits. If the
+   length is <256, there will be no difference and both a new and an
+   old server will be able to handle it.
+
+   @note The extra two bits are added to bits 13 and 14 of the
+   parameter data (with 1 being the least siginficant bit and 16 the
+   most significant bit of the word) by xoring the extra length bits
+   with the real type.  Since all allowable types have 0xF as most
+   significant bits of the metadata word, lengths <256 will not affect
+   the real type at all, while all other values will result in a
+   non-existant type in the range 17-244.
+
+   @see Field_string::unpack
+
    @param   metadata_ptr   First byte of field metadata
 
    @returns number of bytes written to metadata_ptr
 */
 int Field_string::do_save_field_metadata(uchar *metadata_ptr)
 {
-  *metadata_ptr= real_type();
-  *(metadata_ptr + 1)= field_length;
+  DBUG_ASSERT(field_length < 1024);
+  DBUG_ASSERT((real_type() & 0xF0) == 0xF0);
+  DBUG_PRINT("debug", ("field_length: %u, real_type: %u",
+                       field_length, real_type()));
+  *metadata_ptr= (real_type() ^ ((field_length & 0x300) >> 4));
+  *(metadata_ptr + 1)= field_length & 0xFF;
   return 2;
 }
 
@@ -9118,7 +9190,8 @@ uint Field_bit::pack_length_from_metadata(uint field_metadata)
    @retval 0 if this field's size is < the source field's size
    @retval 1 if this field's size is >= the source field's size
 */
-int Field_bit::compatible_field_size(uint field_metadata)
+int Field_bit::compatible_field_size(uint field_metadata,
+                                     const Relay_log_info * __attribute__((unused)))
 {
   int compatible= 0;
   uint const source_size= pack_length_from_metadata(field_metadata);

sql/field.h

@@ -30,6 +30,8 @@ const uint32 max_field_size= (uint32) 4294967295U;
 class Send_field;
 class Protocol;
 class Create_field;
+class Relay_log_info;
+
 struct st_cache_field;
 int field_conv(Field *to,Field *from);
 
@@ -162,7 +164,8 @@ class Field
     table, which is located on disk).
   */
   virtual uint32 pack_length_in_rec() const { return pack_length(); }
-  virtual int compatible_field_size(uint field_metadata);
+  virtual int compatible_field_size(uint field_metadata,
+                                    const Relay_log_info *);
   virtual uint pack_length_from_metadata(uint field_metadata)
   { return field_metadata; }
   /*
@@ -787,7 +790,8 @@ class Field_new_decimal :public Field_num {
   uint32 pack_length() const { return (uint32) bin_size; }
   uint pack_length_from_metadata(uint field_metadata);
   uint row_pack_length() { return pack_length(); }
-  int compatible_field_size(uint field_metadata);
+  int compatible_field_size(uint field_metadata,
+                            const Relay_log_info *rli);
   uint is_equal(Create_field *new_field);
   virtual const uchar *unpack(uchar* to, const uchar *from,
                               uint param_data, bool low_byte_first);
@@ -1475,7 +1479,14 @@ class Field_string :public Field_longstr {
   virtual const uchar *unpack(uchar* to, const uchar *from,
                               uint param_data, bool low_byte_first);
   uint pack_length_from_metadata(uint field_metadata)
-  { return (field_metadata & 0x00ff); }
+  {
+    DBUG_PRINT("debug", ("field_metadata: 0x%04x", field_metadata));
+    if (field_metadata == 0)
+      return row_pack_length();
+    return (((field_metadata >> 4) & 0x300) ^ 0x300) + (field_metadata & 0x00ff);
+  }
+  int compatible_field_size(uint field_metadata,
+                            const Relay_log_info *rli);
   uint row_pack_length() { return (field_length + 1); }
   int pack_cmp(const uchar *a,const uchar *b,uint key_length,
                my_bool insert_or_update);
@@ -1928,7 +1939,8 @@ class Field_bit :public Field {
   uint pack_length_from_metadata(uint field_metadata);
   uint row_pack_length()
   { return (bytes_in_rec + ((bit_len > 0) ? 1 : 0)); }
-  int compatible_field_size(uint field_metadata);
+  int compatible_field_size(uint field_metadata,
+                            const Relay_log_info *rli);
   void sql_type(String &str) const;
   virtual uchar *pack(uchar *to, const uchar *from,
                       uint max_length, bool low_byte_first);

sql/item.cc

@@ -5172,6 +5172,9 @@ Item_bin_string::Item_bin_string(const char *str, uint str_length)
   if (!ptr)
     return;
   str_value.set(ptr, max_length, &my_charset_bin);
+
+  if (max_length > 0)
+  {
     ptr+= max_length - 1;
     ptr[1]= 0;                     // Set end null for string
     for (; end >= str; end--)
@@ -5187,6 +5190,10 @@ Item_bin_string::Item_bin_string(const char *str, uint str_length)
       power<<= 1;
     }
     *ptr= (char) bits;
+  }
+  else
+    ptr[0]= 0;
+
   collation.set(&my_charset_bin, DERIVATION_COERCIBLE);
   fixed= 1;
 }

sql/rpl_utility.cc

@@ -188,7 +188,8 @@ table_def::compatible_with(Relay_log_info const *rli_arg, TABLE *table)
 
   for (uint col= 0 ; col < cols_to_check ; ++col)
   {
-    if (table->field[col]->type() != type(col))
+    Field *const field= table->field[col];
+    if (field->type() != type(col))
     {
       DBUG_ASSERT(col < size() && col < tsh->fields);
       DBUG_ASSERT(tsh->db.str && tsh->table_name.str);
@@ -197,7 +198,7 @@ table_def::compatible_with(Relay_log_info const *rli_arg, TABLE *table)
       my_snprintf(buf, sizeof(buf), "Column %d type mismatch - "
                   "received type %d, %s.%s has type %d",
                   col, type(col), tsh->db.str, tsh->table_name.str,
-                  table->field[col]->type());
+                  field->type());
       rli->report(ERROR_LEVEL, ER_BINLOG_ROW_WRONG_TABLE_DEF,
                   ER(ER_BINLOG_ROW_WRONG_TABLE_DEF), buf);
     }
@@ -205,7 +206,7 @@ table_def::compatible_with(Relay_log_info const *rli_arg, TABLE *table)
       Check the slave's field size against that of the master.
     */
     if (!error &&
-        !table->field[col]->compatible_field_size(field_metadata(col)))
+        !field->compatible_field_size(field_metadata(col), rli_arg))
     {
       error= 1;
       char buf[256];
@@ -213,10 +214,9 @@ table_def::compatible_with(Relay_log_info const *rli_arg, TABLE *table)
                   "master has size %d, %s.%s on slave has size %d."
                   " Master's column size should be <= the slave's "
                   "column size.", col,
-                  table->field[col]->pack_length_from_metadata(
-                                       m_field_metadata[col]),
+                  field->pack_length_from_metadata(m_field_metadata[col]),
                   tsh->db.str, tsh->table_name.str,
-                  table->field[col]->row_pack_length());
+                  field->row_pack_length());
       rli->report(ERROR_LEVEL, ER_BINLOG_ROW_WRONG_TABLE_DEF,
                   ER(ER_BINLOG_ROW_WRONG_TABLE_DEF), buf);
     }

sql/slave.cc

@@ -4057,9 +4057,17 @@ void rotate_relay_log(Master_info* mi)
    @param rli Relay_log_info which tells the master's version
    @param bug_id Number of the bug as found in bugs.mysql.com
    @param report bool report error message, default TRUE
+
+   @param pred Predicate function that will be called with @c param to
+   check for the bug. If the function return @c true, the bug is present,
+   otherwise, it is not.
+
+   @param param  State passed to @c pred function.
+
    @return TRUE if master has the bug, FALSE if it does not.
 */
-bool rpl_master_has_bug(Relay_log_info *rli, uint bug_id, bool report)
+bool rpl_master_has_bug(const Relay_log_info *rli, uint bug_id, bool report,
+                        bool (*pred)(const void *), const void *param)
 {
   struct st_version_range_for_one_bug {
     uint        bug_id;
@@ -4072,6 +4080,7 @@ bool rpl_master_has_bug(Relay_log_info *rli, uint bug_id, bool report)
     {24432, { 5, 1, 12 }, { 5, 1, 17 } },
     {33029, { 5, 0,  0 }, { 5, 0, 58 } },
     {33029, { 5, 1,  0 }, { 5, 1, 12 } },
+    {37426, { 5, 1,  0 }, { 5, 1, 26 } },
   };
   const uchar *master_ver=
     rli->relay_log.description_event_for_exec->server_version_split;
@@ -4085,11 +4094,11 @@ bool rpl_master_has_bug(Relay_log_info *rli, uint bug_id, bool report)
       *fixed_in= versions_for_all_bugs[i].fixed_in;
     if ((versions_for_all_bugs[i].bug_id == bug_id) &&
         (memcmp(introduced_in, master_ver, 3) <= 0) &&
-        (memcmp(fixed_in,      master_ver, 3) >  0))
+        (memcmp(fixed_in,      master_ver, 3) >  0) &&
+        (pred == NULL || (*pred)(param)))
     {
       if (!report)
 	return TRUE;
-      
       // a short message for SHOW SLAVE STATUS (message length constraints)
       my_printf_error(ER_UNKNOWN_ERROR, "master may suffer from"
                       " http://bugs.mysql.com/bug.php?id=%u"
@@ -4137,7 +4146,7 @@ bool rpl_master_erroneous_autoinc(THD *thd)
   {
     Relay_log_info *rli= &active_mi->rli;
     DBUG_EXECUTE_IF("simulate_bug33029", return TRUE;);
-    return rpl_master_has_bug(rli, 33029, FALSE);
+    return rpl_master_has_bug(rli, 33029, FALSE, NULL, NULL);
   }
   return FALSE;
 }

sql/slave.h

@@ -165,7 +165,8 @@ int fetch_master_table(THD* thd, const char* db_name, const char* table_name,
 
 bool show_master_info(THD* thd, Master_info* mi);
 bool show_binlog_info(THD* thd);
-bool rpl_master_has_bug(Relay_log_info *rli, uint bug_id, bool report=TRUE);
+bool rpl_master_has_bug(const Relay_log_info *rli, uint bug_id, bool report,
+                        bool (*pred)(const void *), const void *param);
 bool rpl_master_erroneous_autoinc(THD* thd);
 
 const char *print_slave_db_safe(const char *db);

sql/sql_insert.cc

@@ -695,7 +695,7 @@ bool mysql_insert(THD *thd,TABLE_LIST *table_list,
   if (thd->slave_thread &&
       (info.handle_duplicates == DUP_UPDATE) &&
       (table->next_number_field != NULL) &&
-      rpl_master_has_bug(&active_mi->rli, 24432))
+      rpl_master_has_bug(&active_mi->rli, 24432, TRUE, NULL, NULL))
     goto abort;
 #endif
 
@@ -2967,7 +2967,7 @@ select_insert::prepare(List<Item> &values, SELECT_LEX_UNIT *u)
   if (thd->slave_thread &&
       (info.handle_duplicates == DUP_UPDATE) &&
       (table->next_number_field != NULL) &&
-      rpl_master_has_bug(&active_mi->rli, 24432))
+      rpl_master_has_bug(&active_mi->rli, 24432, TRUE, NULL, NULL))
     DBUG_RETURN(1);
 #endif