What's the correct way to interface with a intptr_t?

[bauss]

On Sunday, 7 April 2019 at 13:45:15 UTC, Paul Backus wrote:
> On Sunday, 7 April 2019 at 12:19:10 UTC, bauss wrote:
>> On Saturday, 6 April 2019 at 20:16:06 UTC, Paul Backus wrote:
>>> On Saturday, 6 April 2019 at 19:31:15 UTC, Robert M. Münch 
>>> wrote:
>>>> I have a C interface that uses a parameter of type intptr_t. 
>>>> Wondering if size_t is the correct D equivalent?
>>>
>>> The correct equivalent is `intptr_t` from `core.stdc.stdint`.
>>
>> Which is just an alias for ptrdiff_t.
>
> Unless this is guaranteed to be the case on every platform 
> druntime is ever ported to, it is technically better to use the 
> `intptr_t` alias.

It should be guaranteed since it's just supposed to be a signed 
integer of either 32 bit or 64 bit depending on the architecture 
you're on.

D isn't supported below 32 bit systems so it's irrelevant there 
and thus it can be a guarantee.