How does D handle null pointers?

[BCS]

Hello Adam,

>> Walter has refused to put in null checks on the theory that the OS
>> does it for you - hence the segfault. Of course, then the only way to
>> get a stacktrace is to either have a segfault handler which prints
>> one or to look at a core dump (assuming that you get one). Neither is
>> a very pleasant solution.
>> 
> I see.  I guess I can sympathize with Walter's perspective somewhat -
> it does feel redundant for both the application AND the OS to be
> checking pointers.  Perhaps then it is the OS that's holding us back.
> If only we could trap a segfault signal and have the OS tell us which
> thread caused it and provide some mechanism to resume the thread with
> an exception...  Hopefully some Linux kernel developers are reading
> this ;)
> 

FWIW, throwing from inside a signal handler seems to work despite being undefined 
and unsafe. YMMV, use at your own risk and don't plan on catching said exception 
or counting anything to work.

-- 
... <IXOYE><