"carlos pizano" <carlospizano@[...].com>  writes:

>  Dave Abrahams wrote:
> > No, I'm disabling the warning with pragmas.  The technique works fine.
> 
>  I don't think so. Well, it can fail. 

It only fails under restricted circumstances, which are documented.

>  See Carl Daniel post on 9/21. 

URL please.

>  I saw the thread(s) on comp.lang.c++.moderated about the subject but
>  nobody mentioned the interaction of the *technique* with /EHs at
>  that time.

What interaction?

>  Here is where I am going with this. The current way, complied with /EHs
>  seems to me that can be better done with something along the lines of:
> 
>  execute() 
>  {
> 
>  __try
>  {
>  	try
>  	{
>  		user_function();
>  	}
>  	catch( specific_type1& )
>  	{
>  		report1(text);
>  	}
>  	catch( specific_type2& )
>  	{
>  		report2(text);
>  	}
>  	... other type specific catch(s) here..
>  	
>  	... do not put catch(...) here ever..
>  }
>  __except ( filter(GetExceptionInformation()) )
>  {
>  	report_def()
>  }
> 
>  } // end of function
> 
>  /* take the above code at the pseudo-code level */

I think you are seriously missing my point.  This is not a substitute
for my technique because it causes unwinding and recovery instead of
going immediately to JIT debugging.

>  Now, inside filter() you can do interesting things for instance
>  re-throwing the SE under certain conditions or checking for the magic
>  number that says that the SE is really a C++ exception and maybe do your
>  trick...

Interesting things are counter-productive at this point.  "Invoke the
debugger" is the right thing to do for developers, and "report
failure and terminate" is the right thing to do for testers.

>  Note that the code above will be done in two nested calls since VC
>  does not Allow you to mix __try and try on the same function.
> 
>  There seems to be very little restrictions on what filter() can be,
>  I wonder if we can make it dispatch to a virtual function so a
>  derived class can customize the behaviors.
> 
>  Think about it.

No thanks! ;-)

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com

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