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Bug#32757: hang with sql_mode set when setting some global variables

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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.
This commit is contained in:
tnurnberg@mysql.com/white.intern.koehntopp.de
2008-02-24 14:12:17 +01:00
parent 60fc91570b
commit 79491f93c8
6 changed files with 125 additions and 43 deletions
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27
mysql-test/r/plugin.result
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@@ -27,3 +27,30 @@ SET GLOBAL example_enum_var= e2;
SET GLOBAL example_enum_var= impossible;
ERROR 42000: Variable 'enum_var' can't be set to the value of 'impossible'
UNINSTALL PLUGIN example;
INSTALL PLUGIN example SONAME 'ha_example.so';
select @@session.sql_mode into @old_sql_mode;
set session sql_mode='';
set global example_ulong_var=500;
select @@global.example_ulong_var;
@@global.example_ulong_var
500
set global example_ulong_var=1111;
Warnings:
Warning 1292 Truncated incorrect ulong_var value: '1111'
select @@global.example_ulong_var;
@@global.example_ulong_var
1000
set session sql_mode='STRICT_ALL_TABLES';
set global example_ulong_var=500;
select @@global.example_ulong_var;
@@global.example_ulong_var
500
set global example_ulong_var=1111;
ERROR 42000: Variable 'ulong_var' can't be set to the value of '1111'
select @@global.example_ulong_var;
@@global.example_ulong_var
500
set session sql_mode=@old_sql_mode;
set session old=bla;
ERROR HY000: Variable 'old' is a read only variable
UNINSTALL PLUGIN example;