Fix for bug 35988.

mysql-test/r/myisam_use_mmap_basic.result

+'#---------------------BS_STVARS_042_01----------------------#'
+SELECT COUNT(@@GLOBAL.myisam_use_mmap);
+COUNT(@@GLOBAL.myisam_use_mmap)
+1
+1 Expected
+'#---------------------BS_STVARS_042_02----------------------#'
+"BUG:It should give error on setting this variable as it is readonly variable"
+Expected error 'Read only variable'
+SELECT COUNT(@@GLOBAL.myisam_use_mmap);
+COUNT(@@GLOBAL.myisam_use_mmap)
+1
+1 Expected
+'#---------------------BS_STVARS_042_03----------------------#'
+SELECT @@GLOBAL.myisam_use_mmap = VARIABLE_VALUE
+FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
+WHERE VARIABLE_NAME='myisam_use_mmap';
+@@GLOBAL.myisam_use_mmap = VARIABLE_VALUE
+1
+1 Expected
+SELECT COUNT(@@GLOBAL.myisam_use_mmap);
+COUNT(@@GLOBAL.myisam_use_mmap)
+1
+1 Expected
+SELECT COUNT(VARIABLE_VALUE)
+FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES 
+WHERE VARIABLE_NAME='myisam_use_mmap';
+COUNT(VARIABLE_VALUE)
+1
+1 Expected
+'#---------------------BS_STVARS_042_04----------------------#'
+SELECT @@myisam_use_mmap = @@GLOBAL.myisam_use_mmap;
+@@myisam_use_mmap = @@GLOBAL.myisam_use_mmap
+1
+1 Expected
+'#---------------------BS_STVARS_042_05----------------------#'
+SELECT COUNT(@@myisam_use_mmap);
+COUNT(@@myisam_use_mmap)
+1
+1 Expected
+SELECT COUNT(@@local.myisam_use_mmap);
+ERROR HY000: Variable 'myisam_use_mmap' is a GLOBAL variable
+Expected error 'Variable is a GLOBAL variable'
+SELECT COUNT(@@SESSION.myisam_use_mmap);
+ERROR HY000: Variable 'myisam_use_mmap' is a GLOBAL variable
+Expected error 'Variable is a GLOBAL variable'
+SELECT COUNT(@@GLOBAL.myisam_use_mmap);
+COUNT(@@GLOBAL.myisam_use_mmap)
+1
+1 Expected
+SELECT myisam_use_mmap = @@SESSION.myisam_use_mmap;
+ERROR 42S22: Unknown column 'myisam_use_mmap' in 'field list'
+Expected error 'Readonly variable'

mysql-test/t/myisam_use_mmap_basic.test

+
+
+################## mysql-test\t\myisam_use_mmap_basic.test ####################
+#                                                                             #
+# Variable Name: myisam_use_mmap                                              #
+# Scope: Global                                                               #
+# Access Type: Static                                                         #
+# Data Type:                                                                  #
+#                                                                             #
+#                                                                             #
+# Creation Date: 2008-02-07                                                   #
+# Author : Sharique Abdullah                                                      #
+#                                                                             #
+#                                                                             #
+# Description:Test Cases of Dynamic System Variable myisam_use_mmap           #
+#             that checks the behavior of this variable in the following ways #
+#              * Value Check                                                  #
+#              * Scope Check                                                  #
+#                                                                             #
+# Reference: http://dev.mysql.com/doc/refman/5.1/en/                          #
+#  server-system-variables.html                                               #
+#                                                                             #
+###############################################################################
+
+--echo '#---------------------BS_STVARS_042_01----------------------#'
+####################################################################
+#   Displaying default value                                       #
+####################################################################
+SELECT COUNT(@@GLOBAL.myisam_use_mmap);
+--echo 1 Expected
+
+
+--echo '#---------------------BS_STVARS_042_02----------------------#'
+#
+# Test case for Bug #35433
+#
+####################################################################
+#   Check if Value can set                                         #
+####################################################################
+
+#--error ER_INCORRECT_GLOBAL_LOCAL_VAR
+#SET @@GLOBAL.myisam_use_mmap=1;
+--ECHO "BUG:It should give error on setting this variable as it is readonly variable"
+--echo Expected error 'Read only variable'
+
+SELECT COUNT(@@GLOBAL.myisam_use_mmap);
+--echo 1 Expected
+
+
+
+
+--echo '#---------------------BS_STVARS_042_03----------------------#'
+#################################################################
+# Check if the value in GLOBAL Table matches value in variable  #
+#################################################################
+
+SELECT @@GLOBAL.myisam_use_mmap = VARIABLE_VALUE
+FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
+WHERE VARIABLE_NAME='myisam_use_mmap';
+--echo 1 Expected
+
+SELECT COUNT(@@GLOBAL.myisam_use_mmap);
+--echo 1 Expected
+
+SELECT COUNT(VARIABLE_VALUE)
+FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES 
+WHERE VARIABLE_NAME='myisam_use_mmap';
+--echo 1 Expected
+
+
+
+--echo '#---------------------BS_STVARS_042_04----------------------#'
+################################################################################
+#  Check if accessing variable with and without GLOBAL point to same variable  #
+################################################################################
+SELECT @@myisam_use_mmap = @@GLOBAL.myisam_use_mmap;
+--echo 1 Expected
+
+
+
+--echo '#---------------------BS_STVARS_042_05----------------------#'
+################################################################################
+#   Check if myisam_use_mmap can be accessed with and without @@ sign          #
+################################################################################
+
+SELECT COUNT(@@myisam_use_mmap);
+--echo 1 Expected
+
+--Error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT COUNT(@@local.myisam_use_mmap);
+--echo Expected error 'Variable is a GLOBAL variable'
+
+--Error ER_INCORRECT_GLOBAL_LOCAL_VAR
+SELECT COUNT(@@SESSION.myisam_use_mmap);
+--echo Expected error 'Variable is a GLOBAL variable'
+
+SELECT COUNT(@@GLOBAL.myisam_use_mmap);
+--echo 1 Expected
+
+--Error ER_BAD_FIELD_ERROR
+SELECT myisam_use_mmap = @@SESSION.myisam_use_mmap;
+--echo Expected error 'Readonly variable'
+
+