Re: [boost] Review Request: Boost Exception

From: Janek Kozicki (janek_listy_at_[hidden])
Date: 2006-11-16 02:03:56

Peter Dimov said:     (by the date of Wed, 15 Nov 2006 19:18:22 +0200)

> Janek Kozicki wrote:
> > Peter Dimov said:     (by the date of Wed, 15 Nov 2006 15:54:14 +0200)
> >
> >>     e.dismiss();
> >
> > why this? destructor of e does the work. No need to e.dismiss()
> > Dave pointed out that std::uncaught_exception() inside e's destructor
> > can check the conditions upon which the destructor is called and to
> > the necessary work depending on it.
> 
> uncaught_exception may still return true in a destructor that is called 
> during an ordinary return.
> 
> ~X: called during stack unwinding
> 
> calls f()
> 
> void f()
> {
>     Y y;
> } // ~Y is called here, uncaught_exception is true

So I have an idea - maybe put catch{} block inside destructor? :)

X::~X()
{
   try
   {
      // try nothing. If exception is active, the catch() will get activated :)
   }
   catch(boost::exception& e)
   {
      e.gotcha();
      throw; // wow. It is a throwing destructor. What do you think?
   }
}

I haven't tested that, maybe I'm just wrong :>

-- 
Janek Kozicki                                                         |