Null references redux

[Christopher Wright]

Jeremie Pelletier wrote:
> There again, I favor stronger initialization semantics over nonnull 
> types. This will get rid of most of these errors

Only for local variables. Not for fields.

> Most segfaults I have take me at most a few minutes to pinpoint. Its 
> finding backdoors to compiler enforcements thats annoying.

You're complaining now because you'd try to cram 'null' down the throat 
of something marked 'not-null' and fear it would be difficult?