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Bug #30832: Assertion + crash with select name_const('test', now());

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The NAME_CONST function is required to work correctly with constants only.
When executed with functions that return types other than those returned by
Item::field_type (string, int, decimal, or real), the result gets cast to
one of those types. This cannot happen for constants.
Fixed by only allowing constants as arguments to NAME_CONST.


mysql-test/r/func_misc.result:
  Bug#30832: Test result
mysql-test/t/func_misc.test:
  Bug#30832: Test case
sql/item.h:
  Bug#30832: The fix
This commit is contained in:
unknown 2007-09-28 18:05:23 +02:00
commit 582388e6d2
3 changed files with 32 additions and 0 deletions
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14
mysql-test/t/func_misc.test
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@ -189,4 +189,18 @@ drop table table_26093;
drop function func_26093_a;
drop function func_26093_b;
#
# Bug #30832: Assertion + crash with select name_const('test',now());
#
--error ER_WRONG_ARGUMENTS
SELECT NAME_CONST('test', NOW());
--error ER_WRONG_ARGUMENTS
SELECT NAME_CONST('test', UPPER('test'));
SELECT NAME_CONST('test', NULL);
SELECT NAME_CONST('test', 1);
SELECT NAME_CONST('test', 1.0);
SELECT NAME_CONST('test', 'test');
--echo End of 5.0 tests