Null references redux

[Andrei Alexandrescu]

Jeremie Pelletier wrote:
> Walter Bright wrote:
>> Yigal Chripun wrote:
>>> An exception trace is *far* better than a segfault and that does not 
>>> require null values.
>>
>> Seg faults are exceptions, too. You can even catch them (on windows)!
> 
> Walter, check the crash handler I submitted to D.announce, it has signal 
> handlers on linux to convert segfaults into D exception objects and 
> throw them so the code can unwind properly and even catch it.
> 
> It has made my life so much easier, I barely need to run within a 
> debugger anymore for most crashes. I don't know enough of phobos and 
> druntime to port it, but its under a public domain license so anyone is 
> free to do it!
> 
> </shameless plug>

I think that's great. Walter, Sean, please let's look into this.

Andrei