15 Mar
2007
15 Mar
'07
5:50 p.m.
Frank Mori Hess wrote:
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On Thursday 15 March 2007 13:23 pm, Peter Dimov wrote:
Frank Mori Hess wrote:
I think the _exp_throwable class in Peter's prototype implementation of exception_ptr needs its destructor to be declared virtual.
I don't think so. :-)
I don't understand. Won't the exception_ptr deleter delete _exp_throwable_impl objects through base class _exp_throwable pointers?
No. If you try to delete an _exp_throwable*, you'll see that the protected destructor won't allow that.
Is there some magic here I'm missing?
Yes. The magic is inside shared_ptr<T>. It deletes whatever is passed to its constructor, regardless of T, which can even be incomplete (as in this case) or void.