diff --git a/mysql-test/include/setup_fake_relay_log.inc b/mysql-test/include/setup_fake_relay_log.inc
index 8113ed6dc10..79ff7429466 100644
--- a/mysql-test/include/setup_fake_relay_log.inc
+++ b/mysql-test/include/setup_fake_relay_log.inc
@@ -68,9 +68,8 @@ let $_fake_relay_log_purge= `SELECT @@global.relay_log_purge`;
 
 # Create relay log file.
 copy_file $fake_relay_log $_fake_relay_log;
-
 # Create relay log index.
-eval SELECT '$_fake_relay_log' INTO OUTFILE '$_fake_relay_index';
+--exec echo $_fake_relay_log > $_fake_relay_index
 
 # Setup replication from existing relay log.
 eval CHANGE MASTER TO MASTER_HOST='dummy.localdomain', RELAY_LOG_FILE='$_fake_relay_log', RELAY_LOG_POS=4;
diff --git a/mysql-test/suite/rpl/t/rpl_cross_version-master.opt b/mysql-test/suite/rpl/t/rpl_cross_version-master.opt
index 815a8f81d32..0ea05290c11 100644
--- a/mysql-test/suite/rpl/t/rpl_cross_version-master.opt
+++ b/mysql-test/suite/rpl/t/rpl_cross_version-master.opt
@@ -1 +1 @@
---replicate-same-server-id --relay-log=slave-relay-bin
+--replicate-same-server-id --relay-log=slave-relay-bin --secure-file-priv=$MYSQL_TMP_DIR
diff --git a/mysql-test/suite/sys_vars/inc/key_buffer_size_basic.inc b/mysql-test/suite/sys_vars/inc/key_buffer_size_basic.inc
index a8fa50a6a23..e55673fd045 100644
--- a/mysql-test/suite/sys_vars/inc/key_buffer_size_basic.inc
+++ b/mysql-test/suite/sys_vars/inc/key_buffer_size_basic.inc
@@ -28,59 +28,68 @@
 
 --source include/load_sysvars.inc
 
-######################################################################## 
+let $minimum_range= BETWEEN 8 AND 36;
+########################################################################
 #                    START OF key_buffer_size TESTS                    #
-######################################################################## 
+########################################################################
 
 --disable_warnings
-######################################################################## 
+########################################################################
 # Saving initial value of key_buffer_size in a temporary variable      #
-######################################################################## 
+########################################################################
 
 SET @start_value = @@global.key_buffer_size;
 
 --echo '#--------------------FN_DYNVARS_055_01------------------------#'
-######################################################################## 
+########################################################################
 #              Display the DEFAULT value of key_buffer_size            #
-######################################################################## 
+########################################################################
 
 SET @@global.key_buffer_size = 99;
 --Error ER_NO_DEFAULT
 SET @@global.key_buffer_size = DEFAULT;
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
+eval SELECT @@global.key_buffer_size $minimum_range;
 
 --echo '#---------------------FN_DYNVARS_055_02-------------------------#'
-############################################### 
+###############################################
 #     Verify default value of variable        #
-############################################### 
+###############################################
 
 SET @@global.key_buffer_size = @start_value;
 SELECT @@global.key_buffer_size = @start_value;
 
 --echo '#--------------------FN_DYNVARS_055_03------------------------#'
-######################################################################## 
+########################################################################
 #        Change the value of key_buffer_size to a valid value          #
-######################################################################## 
+########################################################################
 
 SET @@global.key_buffer_size = 8 ;
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
+eval SELECT @@global.key_buffer_size $minimum_range;
 --disable_warnings
-#Due to increasing the runtime significantly and allocating the buffer instantly.
+# The next subtest is set to comment because it will
+# be tried to allocate the buffer instantly which
+# might lead to a message about missing resources,
+# excessive runtime etc. especially if the main memory is less than 4GB.
 #SET @@global.key_buffer_size = 4294967295;
 --enable_warnings
 #SELECT @@global.key_buffer_size;
 SET @@global.key_buffer_size = 1800;
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
+eval SELECT @@global.key_buffer_size $minimum_range;
 SET @@global.key_buffer_size = 65535;
 SELECT @@global.key_buffer_size;
 
 --echo '#--------------------FN_DYNVARS_055_04-------------------------#'
-########################################################################### 
+###########################################################################
 #         Change the value of key_buffer_size to invalid value            #
-########################################################################### 
+###########################################################################
 
-# Due to increasing the runtime significantly and allocating the buffer instantly
-# with a size of 18446744073709551615 bytes with 32bit exec.
+# The next subtests are set to comment because they will
+# be tried to allocate the buffer instantly which
+# might lead to a message about missing resources,
+# excessive runtime etc. especially if the main memory is less than 4GB.
+# The negative values lead to very big numbers, e.g. -1 to
+# a size of 18446744073709551615 bytes with a 32bit binary.
+# See Bug #42103.
 #SET @@global.key_buffer_size = -1;
 #SELECT @@global.key_buffer_size;
 #SET @@global.key_buffer_size = 100000000000;
@@ -91,46 +100,49 @@ SELECT @@global.key_buffer_size;
 #SET @@global.key_buffer_size = -1024;
 #SELECT @@global.key_buffer_size;
 SET @@global.key_buffer_size = 4;
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
+eval SELECT @@global.key_buffer_size $minimum_range;
 
 --Error ER_WRONG_TYPE_FOR_VAR
 SET @@global.key_buffer_size = ON;
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
+eval SELECT @@global.key_buffer_size $minimum_range;
 --Error ER_WRONG_TYPE_FOR_VAR
 SET @@global.key_buffer_size = 'test';
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
+eval SELECT @@global.key_buffer_size $minimum_range;
 
 --echo '#-------------------FN_DYNVARS_055_05----------------------------#'
-########################################################################### 
+###########################################################################
 #       Test if accessing session key_buffer_size gives error             #
-########################################################################### 
+###########################################################################
 
 --Error ER_GLOBAL_VARIABLE
 SET @@session.key_buffer_size = 0;
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
+eval SELECT @@global.key_buffer_size $minimum_range;
 
 --echo '#----------------------FN_DYNVARS_055_06------------------------#'
-############################################################################## 
+##############################################################################
 # Check if the value in GLOBAL & SESSION Tables matches values in variable   #
 ##############################################################################
 
-SELECT @@global.key_buffer_size = VARIABLE_VALUE 
-FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES 
+SELECT @@global.key_buffer_size = VARIABLE_VALUE
+FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
 WHERE VARIABLE_NAME='key_buffer_size';
 
-SELECT @@key_buffer_size = VARIABLE_VALUE 
-FROM INFORMATION_SCHEMA.SESSION_VARIABLES 
+SELECT @@key_buffer_size = VARIABLE_VALUE
+FROM INFORMATION_SCHEMA.SESSION_VARIABLES
 WHERE VARIABLE_NAME='key_buffer_size';
 
 --echo '#---------------------FN_DYNVARS_055_07----------------------#'
-################################################################### 
+###################################################################
 #      Check if TRUE and FALSE values can be used on variable     #
-################################################################### 
+###################################################################
 
+# The following assignment are accepted, but should be rejected
+# like the value ON (see above).
+# See Bug #42104
 SET @@global.key_buffer_size = TRUE;
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
+eval SELECT @@global.key_buffer_size $minimum_range;
 SET @@global.key_buffer_size = FALSE;
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
+eval SELECT @@global.key_buffer_size $minimum_range;
 
 --echo '#---------------------FN_DYNVARS_055_08----------------------#'
 #####################################################################
@@ -145,13 +157,13 @@ SELECT @@key_buffer_size = @@global.key_buffer_size;
 --enable_warnings
 
 --echo '#---------------------FN_DYNVARS_055_09----------------------#'
-##########################################################################  
+##########################################################################
 #   Check if key_buffer_size can be accessed with and without @@ sign    #
 ##########################################################################
 
 --Error ER_GLOBAL_VARIABLE
 SET key_buffer_size = 8 ;
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
+eval SELECT @@global.key_buffer_size $minimum_range;
 --Error ER_PARSE_ERROR
 SET local.key_buffer_size = 10;
 --Error ER_UNKNOWN_TABLE
@@ -163,8 +175,7 @@ SELECT global.key_buffer_size;
 --Error ER_BAD_FIELD_ERROR
 SELECT key_buffer_size = @@session.key_buffer_size;
 
-
-##############################  
+##############################
 #   Restore initial value    #
 ##############################
 
diff --git a/mysql-test/suite/sys_vars/r/key_buffer_size_basic_32.result b/mysql-test/suite/sys_vars/r/key_buffer_size_basic_32.result
index 51c4f841205..7221da16ed8 100644
--- a/mysql-test/suite/sys_vars/r/key_buffer_size_basic_32.result
+++ b/mysql-test/suite/sys_vars/r/key_buffer_size_basic_32.result
@@ -3,8 +3,8 @@ SET @start_value = @@global.key_buffer_size;
 SET @@global.key_buffer_size = 99;
 SET @@global.key_buffer_size = DEFAULT;
 ERROR 42000: Variable 'key_buffer_size' doesn't have a default value
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
-@@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36
+SELECT @@global.key_buffer_size BETWEEN 8 AND 36;
+@@global.key_buffer_size BETWEEN 8 AND 36
 1
 '#---------------------FN_DYNVARS_055_02-------------------------#'
 SET @@global.key_buffer_size = @start_value;
@@ -13,14 +13,14 @@ SELECT @@global.key_buffer_size = @start_value;
 1
 '#--------------------FN_DYNVARS_055_03------------------------#'
 SET @@global.key_buffer_size = 8 ;
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
-@@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36
+SELECT @@global.key_buffer_size BETWEEN 8 AND 36;
+@@global.key_buffer_size BETWEEN 8 AND 36
 1
 SET @@global.key_buffer_size = 1800;
 Warnings:
 Warning	1292	Truncated incorrect key_buffer_size value: '1800'
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
-@@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36
+SELECT @@global.key_buffer_size BETWEEN 8 AND 36;
+@@global.key_buffer_size BETWEEN 8 AND 36
 1
 SET @@global.key_buffer_size = 65535;
 SELECT @@global.key_buffer_size;
@@ -35,24 +35,24 @@ SELECT @@global.key_buffer_size;
 SET @@global.key_buffer_size = 4;
 Warnings:
 Warning	1292	Truncated incorrect key_buffer_size value: '4'
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
-@@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36
+SELECT @@global.key_buffer_size BETWEEN 8 AND 36;
+@@global.key_buffer_size BETWEEN 8 AND 36
 1
 SET @@global.key_buffer_size = ON;
 ERROR 42000: Incorrect argument type to variable 'key_buffer_size'
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
-@@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36
+SELECT @@global.key_buffer_size BETWEEN 8 AND 36;
+@@global.key_buffer_size BETWEEN 8 AND 36
 1
 SET @@global.key_buffer_size = 'test';
 ERROR 42000: Incorrect argument type to variable 'key_buffer_size'
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
-@@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36
+SELECT @@global.key_buffer_size BETWEEN 8 AND 36;
+@@global.key_buffer_size BETWEEN 8 AND 36
 1
 '#-------------------FN_DYNVARS_055_05----------------------------#'
 SET @@session.key_buffer_size = 0;
 ERROR HY000: Variable 'key_buffer_size' is a GLOBAL variable and should be set with SET GLOBAL
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
-@@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36
+SELECT @@global.key_buffer_size BETWEEN 8 AND 36;
+@@global.key_buffer_size BETWEEN 8 AND 36
 1
 '#----------------------FN_DYNVARS_055_06------------------------#'
 SELECT @@global.key_buffer_size = VARIABLE_VALUE 
@@ -69,14 +69,14 @@ WHERE VARIABLE_NAME='key_buffer_size';
 SET @@global.key_buffer_size = TRUE;
 Warnings:
 Warning	1292	Truncated incorrect key_buffer_size value: '1'
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
-@@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36
+SELECT @@global.key_buffer_size BETWEEN 8 AND 36;
+@@global.key_buffer_size BETWEEN 8 AND 36
 1
 SET @@global.key_buffer_size = FALSE;
 Warnings:
 Warning	1438	Cannot drop default keycache
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
-@@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36
+SELECT @@global.key_buffer_size BETWEEN 8 AND 36;
+@@global.key_buffer_size BETWEEN 8 AND 36
 1
 '#---------------------FN_DYNVARS_055_08----------------------#'
 SET @@global.key_buffer_size = 8 ;
@@ -86,8 +86,8 @@ SELECT @@key_buffer_size = @@global.key_buffer_size;
 '#---------------------FN_DYNVARS_055_09----------------------#'
 SET key_buffer_size = 8 ;
 ERROR HY000: Variable 'key_buffer_size' is a GLOBAL variable and should be set with SET GLOBAL
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
-@@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36
+SELECT @@global.key_buffer_size BETWEEN 8 AND 36;
+@@global.key_buffer_size BETWEEN 8 AND 36
 1
 SET local.key_buffer_size = 10;
 ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'key_buffer_size = 10' at line 1
diff --git a/mysql-test/suite/sys_vars/r/key_buffer_size_basic_64.result b/mysql-test/suite/sys_vars/r/key_buffer_size_basic_64.result
index 51c4f841205..9ce1ab20993 100644
--- a/mysql-test/suite/sys_vars/r/key_buffer_size_basic_64.result
+++ b/mysql-test/suite/sys_vars/r/key_buffer_size_basic_64.result
@@ -3,8 +3,8 @@ SET @start_value = @@global.key_buffer_size;
 SET @@global.key_buffer_size = 99;
 SET @@global.key_buffer_size = DEFAULT;
 ERROR 42000: Variable 'key_buffer_size' doesn't have a default value
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
-@@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36
+SELECT @@global.key_buffer_size BETWEEN 8 AND 36;
+@@global.key_buffer_size BETWEEN 8 AND 36
 1
 '#---------------------FN_DYNVARS_055_02-------------------------#'
 SET @@global.key_buffer_size = @start_value;
@@ -13,14 +13,14 @@ SELECT @@global.key_buffer_size = @start_value;
 1
 '#--------------------FN_DYNVARS_055_03------------------------#'
 SET @@global.key_buffer_size = 8 ;
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
-@@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36
+SELECT @@global.key_buffer_size BETWEEN 8 AND 36;
+@@global.key_buffer_size BETWEEN 8 AND 36
 1
 SET @@global.key_buffer_size = 1800;
 Warnings:
 Warning	1292	Truncated incorrect key_buffer_size value: '1800'
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
-@@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36
+SELECT @@global.key_buffer_size BETWEEN 8 AND 36;
+@@global.key_buffer_size BETWEEN 8 AND 36
 1
 SET @@global.key_buffer_size = 65535;
 SELECT @@global.key_buffer_size;
@@ -35,33 +35,33 @@ SELECT @@global.key_buffer_size;
 SET @@global.key_buffer_size = 4;
 Warnings:
 Warning	1292	Truncated incorrect key_buffer_size value: '4'
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
-@@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36
+SELECT @@global.key_buffer_size BETWEEN 8 AND 36;
+@@global.key_buffer_size BETWEEN 8 AND 36
 1
 SET @@global.key_buffer_size = ON;
 ERROR 42000: Incorrect argument type to variable 'key_buffer_size'
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
-@@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36
+SELECT @@global.key_buffer_size BETWEEN 8 AND 36;
+@@global.key_buffer_size BETWEEN 8 AND 36
 1
 SET @@global.key_buffer_size = 'test';
 ERROR 42000: Incorrect argument type to variable 'key_buffer_size'
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
-@@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36
+SELECT @@global.key_buffer_size BETWEEN 8 AND 36;
+@@global.key_buffer_size BETWEEN 8 AND 36
 1
 '#-------------------FN_DYNVARS_055_05----------------------------#'
 SET @@session.key_buffer_size = 0;
 ERROR HY000: Variable 'key_buffer_size' is a GLOBAL variable and should be set with SET GLOBAL
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
-@@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36
+SELECT @@global.key_buffer_size BETWEEN 8 AND 36;
+@@global.key_buffer_size BETWEEN 8 AND 36
 1
 '#----------------------FN_DYNVARS_055_06------------------------#'
-SELECT @@global.key_buffer_size = VARIABLE_VALUE 
-FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES 
+SELECT @@global.key_buffer_size = VARIABLE_VALUE
+FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
 WHERE VARIABLE_NAME='key_buffer_size';
 @@global.key_buffer_size = VARIABLE_VALUE
 1
-SELECT @@key_buffer_size = VARIABLE_VALUE 
-FROM INFORMATION_SCHEMA.SESSION_VARIABLES 
+SELECT @@key_buffer_size = VARIABLE_VALUE
+FROM INFORMATION_SCHEMA.SESSION_VARIABLES
 WHERE VARIABLE_NAME='key_buffer_size';
 @@key_buffer_size = VARIABLE_VALUE
 1
@@ -69,14 +69,14 @@ WHERE VARIABLE_NAME='key_buffer_size';
 SET @@global.key_buffer_size = TRUE;
 Warnings:
 Warning	1292	Truncated incorrect key_buffer_size value: '1'
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
-@@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36
+SELECT @@global.key_buffer_size BETWEEN 8 AND 36;
+@@global.key_buffer_size BETWEEN 8 AND 36
 1
 SET @@global.key_buffer_size = FALSE;
 Warnings:
 Warning	1438	Cannot drop default keycache
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
-@@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36
+SELECT @@global.key_buffer_size BETWEEN 8 AND 36;
+@@global.key_buffer_size BETWEEN 8 AND 36
 1
 '#---------------------FN_DYNVARS_055_08----------------------#'
 SET @@global.key_buffer_size = 8 ;
@@ -86,8 +86,8 @@ SELECT @@key_buffer_size = @@global.key_buffer_size;
 '#---------------------FN_DYNVARS_055_09----------------------#'
 SET key_buffer_size = 8 ;
 ERROR HY000: Variable 'key_buffer_size' is a GLOBAL variable and should be set with SET GLOBAL
-SELECT @@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36;
-@@global.key_buffer_size >= 8 AND @@global.key_buffer_size <= 36
+SELECT @@global.key_buffer_size BETWEEN 8 AND 36;
+@@global.key_buffer_size BETWEEN 8 AND 36
 1
 SET local.key_buffer_size = 10;
 ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'key_buffer_size = 10' at line 1