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Auto-merged fix for bug#49489.

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This commit is contained in:
Evgeny Potemkin 2009-12-11 16:08:29 +03:00
commit b358f61bc7
3 changed files with 20 additions and 1 deletions
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10
mysql-test/r/select.result
View file

@ -4694,4 +4694,14 @@ HAVING v <= 't'
ORDER BY pk;
v
DROP TABLE t1;
#
# Bug#49489 Uninitialized cache led to a wrong result.
#
CREATE TABLE t1(c1 DOUBLE(5,4));
INSERT INTO t1 VALUES (9.1234);
SELECT * FROM t1 WHERE c1 < 9.12345;
c1
9.1234
DROP TABLE t1;
# End of test for bug#49489.
End of 5.1 tests

9
mysql-test/t/select.test
View file

@ -4014,4 +4014,13 @@ ORDER BY pk;
DROP TABLE t1;
--echo #
--echo # Bug#49489 Uninitialized cache led to a wrong result.
--echo #
CREATE TABLE t1(c1 DOUBLE(5,4));
INSERT INTO t1 VALUES (9.1234);
SELECT * FROM t1 WHERE c1 < 9.12345;
DROP TABLE t1;
--echo # End of test for bug#49489.
--echo End of 5.1 tests

2
sql/item_cmpfunc.cc
View file

@ -1031,7 +1031,7 @@ Item** Arg_comparator::cache_converted_constant(THD *thd, Item **value,
(*value)->const_item() && type != (*value)->result_type())
{
Item_cache *cache= Item_cache::get_cache(*value, type);
cache->store(*value);
cache->setup(*value);
*cache_item= cache;
return cache_item;
}