On Sat, Jun 23, 2012 at 7:22 AM, John Maddock <boost.regex@virgin.net>wrote:
From what I can find in the list archives [1], Boost.FileSystem also had a
similar issue with the requirement that thrown exceptions inherit from std::exception. However, I'm not sure if [1] prompted the FileSystem-local hook or if it was resolved in some other way.
All exceptions should inherit from std::exception. There is no need to involve the boost::exception type in your code to use throw_exception.
This works both ways - you can and should inherit from std::exception whether you use BOOST_THROW_EXCEPTION or not, it's just that in the latter case, they will also inherit from boost::exception (via multiple inheritance if I understand the machinery correctly).
Yes, any exception emitted by boost::throw_exception can be intercepted as std::exception (you get a compile error if you pass a type that doesn't derive from std::exception), or as boost::exception (it's inserted as a base type if the passed type doesn't already derive from it). Emil Dotchevski Reverge Studios, Inc. http://www.revergestudios.com/reblog/index.php?n=ReCode