Best way to confine project to 64 bit builds only?

[NonNull]

On Saturday, 17 October 2020 at 14:56:33 UTC, Basile B. wrote:
> On Saturday, 17 October 2020 at 14:50:47 UTC, NonNull wrote:
>> I have inherited an open source C project that assumes that 
>> the size of a long and the size of a pointer are the same, and 
>> I have translated it into very similar D just like 
>> https://dlang.org/blog/2018/06/11/dasbetterc-converting-make-c-to-d/
>>
>> D has the size of long fixed at 64 bits, so a pointer now has 
>> to be 64 bits.
>
> No it's wrong. A pointer always has the size of a general 
> purpose register.

You misunderstand. The original C only works if the size of a 
pointer is the same as the size of a long. So when translated 
into D in a simple way where the size of a long is always 64 bits 
the D will only work if the size of a pointer is 64 bits.