evgen@moonbone.local 49af76ac8a Bug#31095: Unexpected NULL constant caused server crash. ...

The Item_func_rollup_const class is used for wrapping constants to avoid
wrong result for ROLLUP queries with DISTINCT and a constant in the select
list. This class is also used to wrap up a NULL constant but its null_value
wasn't set accordingly. This led to a server crash.

Now the null_value of an object of the Item_func_rollup_const class is set
by its fix_length_and_dec member function.

2007-10-01 20:03:50 +00:00

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