Re: [Drizzle-discuss] Removing Array custom vector allocation for semi-join subqueries

[Monty Taylor]

Brian Aker wrote:
> Hi!
> 
> On Feb 26, 2009, at 12:21 PM, Mats Kindahl wrote:
> 
>> recycling. In that case, any pointers into that old memory that are still
>> dangling would not be useful, since the memory is likely to be
>> overwritten with
> 
> mem_root or not mem_root... I consider this to be pretty bad behavior to
> rely on.

Not mem_root. C++ has much better ways of dealing with this sort of
thing (automatic delloc when you're done with stuff) mem_root was likely
very important when it was written, and a great idea then.

Now it's just extra complexity that hides behavior.

Monty