Re: C++ Plugins and virtual destructors.

[Bob Friesenhahn]

On Sun, 11 Nov 2007, Daniel Herring wrote:
> If the vtable is functioning for normal virtual functions, why wouldn't it 
> also work for a virtual destructor?  Destructors are not magic; they are 
> merely functions that get called just before memory is released.  RTTI, a 
> common culprit in dlopen issues, doesn't get involved here.

Right.  A more important question to ask is if static 
constructors/destructors get properly executed, including the 
framework necessary to support C++ exceptions.  The C++ exception 
issue is significant since usually the framework is set up by the 
original program and if the plugin does not properly mesh into it then 
there is a problem.  There may also be a problem if the program is 
written and linked as a C program but the plugin is C++.

Bob
======================================
Bob Friesenhahn
address@hidden, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/