[reSIProcate] VS2005 crashing with DUM

[Alan Hawrylyshen]

On 23-Oct-07, at 04:30 , Nilay Tripathi wrote:

> The auto_ptr instance that we create has everything fine, but as  
> soon as we assign it to mClientAuthManager, vfptr goes for a toss.  
> Something creepy in operator=() of auto_ptr.

Is it safe to assume that the 'creepy' part of auto_ptr is something  
other than the 'assignment transfers ownership' semantics of auto_ptr.

Given a class, A, and a pair of auto_ptr's p1 and p2, the following  
is roughly true:
	A* p;
	auto_ptr<A> p1(p = new A);
	// p1 'points' to the 'new A' (the same place that 'p' points)
	// of course 'p' is dangerous and merely here for pedagogical purposes.
	auto_ptr<A> p2(p1);

	// p2 now 'points' at the same place as 'p' and
	// p1 is pointing at nothing.

	auto_ptr<A> p3 = p2 ; // usually disallowed, but has same effect,  
only p3
	// refers to the same A that p does.

	Using auto_ptr<>::release() and auto_ptr<>::get() can put you in  
trouble too...

Or was it something else really 'odd'?



Alan Hawrylyshen
a l a n a t p o l y p h a s e d o t c a


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://list.resiprocate.org/pipermail/resiprocate-devel/attachments/20071023/e9fa6596/attachment.htm>