mariadb/mysql-test/t/plugin.test
unknown 9bd3b8545a Bug#32757: hang with sql_mode set when setting some global variables
If setting a system-variable provided by a plug-in failed, no OK or
error was sent in some cases, hanging the client. We now send an error
in the case from the ticket (integer-argument out of range in STRICT
mode). We also provide a semi-generic fallback message for possible
future cases like this where an error is signalled, but no message is
sent to the client. The error/warning handling is unified so it's the
same again for variables provided by plugins and those in the server
proper.


mysql-test/r/plugin.result:
  show that on out-of-range values, plugin interface throws errors
  in STRICT mode and warnings otherwise.
mysql-test/t/plugin.test:
  show that on out-of-range values, plugin interface throws errors
  in STRICT mode and warnings otherwise.
sql/set_var.cc:
  - handle signedness of values used in warnings
  - in STRICT mode, throw errors rather than warnings
sql/sql_parse.cc:
  If sql_set_variables() returns with an error but no message
  was sent to the client, send a semi-generic one so the session
  won't hang and we won't fail silently.
sql/sql_plugin.cc:
  throw a warning if more than just block-size was corrected
  (or an error in STRICT mode). use functions from set_var
  for uniform behaviour of server- and plug-in variables.
storage/example/ha_example.cc:
  Add a ULONG system variable to example plugin so
  we can test integers in the plugin-interface without
  having to depend on the presence of innobase.
2008-02-24 14:12:17 +01:00

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--source include/have_example_plugin.inc
CREATE TABLE t1(a int) ENGINE=EXAMPLE;
DROP TABLE t1;
INSTALL PLUGIN example SONAME 'ha_example.so';
--error 1125
INSTALL PLUGIN EXAMPLE SONAME 'ha_example.so';
UNINSTALL PLUGIN example;
INSTALL PLUGIN example SONAME 'ha_example.so';
CREATE TABLE t1(a int) ENGINE=EXAMPLE;
# Let's do some advanced ops with the example engine :)
SELECT * FROM t1;
DROP TABLE t1;
UNINSTALL PLUGIN example;
--error 1305
UNINSTALL PLUGIN EXAMPLE;
--error 1305
UNINSTALL PLUGIN non_exist;
--echo #
--echo # Bug#32034: check_func_enum() does not check correct values but set it
--echo # to impossible int val
--echo #
INSTALL PLUGIN example SONAME 'ha_example.so';
SET GLOBAL example_enum_var= e1;
SET GLOBAL example_enum_var= e2;
--error 1231
SET GLOBAL example_enum_var= impossible;
UNINSTALL PLUGIN example;
#
# Bug #32757 hang with sql_mode set when setting some global variables
#
INSTALL PLUGIN example SONAME 'ha_example.so';
select @@session.sql_mode into @old_sql_mode;
# first, try normal sql_mode (no error, send OK)
set session sql_mode='';
set global example_ulong_var=500;
select @@global.example_ulong_var;
# overflow -- correct value, but throw warning
set global example_ulong_var=1111;
select @@global.example_ulong_var;
# now, try STRICT (error occurrs, no message is sent, so send default)
set session sql_mode='STRICT_ALL_TABLES';
set global example_ulong_var=500;
select @@global.example_ulong_var;
# overflow -- throw warning, do NOT change value
--error ER_WRONG_VALUE_FOR_VAR
set global example_ulong_var=1111;
select @@global.example_ulong_var;
set session sql_mode=@old_sql_mode;
# finally, show that conditions that already raised an error are not
# adversely affected (error was already sent, do nothing)
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
set session old=bla;
UNINSTALL PLUGIN example;