--source include/have_debug.inc
# ulong global

SET @start_global_value = @@global.debug_crc_break;

#
# exists as global only
#
select @@global.debug_crc_break;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
select @@session.debug_crc_break;
show global variables like 'debug_crc_break';
show session variables like 'debug_crc_break';
select * from information_schema.global_variables where variable_name='debug_crc_break';
select * from information_schema.session_variables where variable_name='debug_crc_break';

#
# show that it's writable
#
set global debug_crc_break=1;
select @@global.debug_crc_break;
--error ER_GLOBAL_VARIABLE
set session debug_crc_break=1;

#
# incorrect types
#
--error ER_WRONG_TYPE_FOR_VAR
set global debug_crc_break=1.1;
--error ER_WRONG_TYPE_FOR_VAR
set global debug_crc_break=1e1;
--error ER_WRONG_TYPE_FOR_VAR
set global debug_crc_break="foo";

#
# min/max values
#
set global debug_crc_break=0;
select @@global.debug_crc_break;
--disable_warnings
set global debug_crc_break=cast(-1 as unsigned int);
--enable_warnings
--replace_result 4294967295 18446744073709551615
select @@global.debug_crc_break;

SET @@global.debug_crc_break = @start_global_value;