Why null reference not showing crash.

[Richard (Rikki) Andrew Cattermole]

It does die from the segfault.

Program terminated with signal: SIGSEGV

Note: by default D does not throw an exception (it would be an Error not 
Exception).

There is some code to do this for linux, and we've approved if someone 
is willing to implement it, a read barrier to check for null deref 
behind a CLI switch.

Unfortunately right now, segfaults in D may or may not generate a stack 
trace, it depends upon the platform and if you've got debug info 
compiled in.

For posix systems you have to inspect the core dump of the process after 
it dies. What to do for this isn't D specific, and you can find 
tutorials for it by platform.