Re: [Boost-Users] Re: Multiple inheritance and enable_shared_from_this

From: Peter Dimov (pdimov_at_[hidden])
Date: 2003-07-19 08:06:39

Jason Winnebeck wrote:
> 
> Instead I tried to make the SharedThis class non-templated, and
> virtually inherit from that.  However it didn't work, because of
> pointer casting issues.  I'm not sure if this is what caused my
> errors, but I heard that you can't downcast from a virtual base class
> * to a concrete class without dynamic_cast.

That's correct. A virtual base class's offset can vary at runtime.