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List:       kde-devel
Subject:    Re: C++ exceptions
From:       David Faure <faure () kde ! org>
Date:       2005-12-05 14:42:25
Message-ID: 200512051542.25831.faure () kde ! org
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On Monday 05 December 2005 14:50, Tommi Mäkitalo wrote:
> Exceptionhandling makes errorhandling easy and safe especially in deep call 
> stacks (more than 1;-) ).

Except when a destructor involved in the stack-unwinding makes a call which itself
raises an exception ... and then ... kaboom. Not allowed by the standard. abort().
With a rather confusing backtrace. Fun, isn't it?

I can tell you that I lost a long time on debugging exception problems in a non-kde project,
and I would certainly NOT say that exceptions make it "easy and safe". Certainly not.
No the C++ exceptions, I mean. Don't (anyone) bring Java into the mix. Exceptions
might be easy and safe in Java and some other languages, but in C++ they have very
nasty behaviors like the one above.

-- 
David Faure, faure@kde.org, sponsored by Trolltech to work on KDE,
Konqueror (http://www.konqueror.org), and KOffice (http://www.koffice.org).

 
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