Um, no. Exceptions can easily be uncaught (oops, forgot a try catch!). I don't want the end result of an uncaught exception to be a bug that's impossible or difficult to determine because no stack trace was printed. Let's consider that an exception may not be easily repeated and is most likely encountered by a user, not a developer. Giving a mechanism to communicate the problem as completely as possible from the user developer should be the default.
We should classify any exception or error that gets thrown outside of main to be an exception that was not planned for by the developer, and therefore a program error. This should trigger as much info as possible, definitely including a stack trace, and possibly a core dump (though, dumping core after catching an exception is next to useless). If you want to avoid printing stack traces, catch the exception inside of main. I don't think it's too much to ask. -Steve ----- Original Message ---- > From: Sean Kelly <[email protected]> > To: Discuss the phobos library for D <[email protected]> > Sent: Fri, July 30, 2010 10:42:51 AM > Subject: Re: [phobos] Calling abort() on unhandled exception > > On Jul 29, 2010, at 10:01 PM, Andrei Alexandrescu wrote: > > > > I for one really enjoy stuff like: > > > > void main(string[] args) > > { > > enforce(args.length > 1, "Usage: prog arg"); > > ... > > } > > > > Having a stack trace tacked there... not good. Exception messages are > > meant >to be seen by users. Stack traces are meant to be seen by the programmer. The >fact that we print both by default doesn't sit well at all. > > Fair enough. Maybe they should only be displayed for Errors, not Exceptions? > > > Is it reasonable to say that Exception is the "nicer" thing and Throwable > > is >the "less nice" thing that is handled differently? Then come bus errors, >which >are "not nice at all". > > It is. > _______________________________________________ > phobos mailing list > [email protected] > http://lists.puremagic.com/mailman/listinfo/phobos > _______________________________________________ phobos mailing list [email protected] http://lists.puremagic.com/mailman/listinfo/phobos
