Comparing pointers in C and D

[Dukc]

On Wednesday, 15 February 2023 at 20:07:35 UTC, Olivier Pisano 
wrote:
> Does the D spec define pointer comparison semantics ? What 
> should the correct behaviour be? I can understand the C 
> standard wording in regards to segmented memory archs, but I 
> must admit I have trouble justifying it on a PC with linear 
> address space...

I cannot find a relevant line in the spec. It should be defined 
behaviour, as it is allowed in `@safe`, but the result of the 
comparison is probably undefined, in the same way a `bool` 
variable initialised with ` = void` is undefined.