null pointer dereference detection in DMD

[Iain Buclaw]

On Saturday, 11 January 2025 at 20:39:13 UTC, Walter Bright wrote:
> This led to my original concept of D as having no warnings. We 
> should probably revisit our current set of warnings and see if 
> they can be made errors.

Previous work on this.

https://github.com/dlang/dmd/pull/15716
https://github.com/dlang/dmd/pull/15718
https://github.com/dlang/dmd/pull/15719
https://github.com/dlang/dmd/pull/15720
https://github.com/dlang/dmd/pull/15721
https://github.com/dlang/dmd/pull/16197
https://github.com/dlang/dmd/pull/16198

Unless new ones have been added, I don't think there are much 
left. And the majority that are, I'm not sure what alternate 
diagnostic they should be using.  For example `#pragma 
pack(show)` or all DDoc warnings.