Do we really need @unsafe?

[Don]

Walter Bright wrote:
> Don wrote:
>> Actually, I'd hope for a way of checking that @unsafe functions are 
>> called only from @trusted functions, and NOT from unmarked ones -- 
>> that's the way I'd proceed in moving a codebase over to 'safe'.
> 
> That would be fairly viral. I'm concerned it would make it an impediment 
> to use.

Hopefully such functions would be really rare. It would be a strong 
encouragement to wrap them in an @trusted wrapper.