[haiku-development] Re: Odd errors messages while building DEBUG=1
- From: Rene Gollent <anevilyak@xxxxxxxxx>
- To: haiku-development@xxxxxxxxxxxxx
- Date: Mon, 15 Apr 2013 07:55:26 -0400
On Mon, Apr 15, 2013 at 6:21 AM, "Axel Dörfler" <axeld@xxxxxxxxxxxxxxxx> wrote:
>> http://cgit.haiku-os.org/haiku/tree/src/add-ons/kernel/network/notifications/notifications.cpp/#n136
>>
>> Given how that object's being used, I'm somewhat unclear on why it's a
>> BReferenceable subclass at all, since that seems a bit unsafe for a
>> statically allocated object.
>
> The BReferenceable is in fact not used there to destroy the object, but only
> to
> keep the module loaded in the first place as long as it is in use.
> Why exactly does it panic?
The above line of code eventually winds up invoking the BReferenceable
destructor while the object ref count is non-zero, which is something
that's sanity checked for a DEBUG build. We make a special exception
for ref count == 1 and an object in the stack address range, which
this one is not, hence panic.
Regards,
Rene
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