[Boost-users] Re: [OBORONA-SPAM] delete shared_ptr object???

From: David Abrahams (dave_at_[hidden])
Date: 2005-03-28 21:48:45

pps <i-love-spam_at_[hidden]> writes:

> Dan Bikel wrote:
>> Rather disturbingly, the following code compiles (at least, with
>> g++-3.3.2):
>>   #include "boost/shared_ptr.hpp"
>>   using namespace boost;
>>   class X {};
>>   int main() {
>>     const shared_ptr<X> y;
>>     delete y;
>>   }
>> Normally, when you compile code with delete applied to a non-pointer
>> type, you get a compile-time error.  What's going on here?
>
> try this:
>
> struct X {
> 	operator X*(){ return this; }
> 	void operator delete (void *p){}
> };
> int main(int, char*[]) {
> 	X x;
> 	delete x;
> }

But shared_ptr isn't implicitly convertible to anything, for just that
reason.

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com