[phobos] phobos commit, revision 1924

[Andrei Alexandrescu]

Th diff shows I did that for a couple files; it felt unnatural to use  
ptrdiff_t when almost always there were no pointers involved.

Sent by shouting through my showerhead.

On Aug 23, 2010, at 6:02 AM, Sean Kelly <sean at invisibleduck.org> wrote:

> Oops.  I'll check that out.  Why not use ptrdiff_t though?  It's  
> already defined in object.d for this purpose, and unlike ssize_t  
> it's a standard C typedef.
>
> On Aug 23, 2010, at 4:36 AM, Walter Bright wrote:
>
>> ssize_t appears to be incorrectly defined in types.d, which  
>> unistd.d imports. It is supposed to be a "signed" size_t, whereas  
>> there are aliases in it that make it size_t. For example, OSX's / 
>> usr/include files definite set it to be a long, not a size_t as set  
>> in types.d. It looks like all the aliases need to be double checked.
>>
>> Andrei Alexandrescu wrote:
>>> I tried the uninspired name ssize_t; the problem is it conflicted  
>>> with unistd.d and I couldn't disambiguate due to what seems to be  
>>> a compiler bug.
>>>
>>> I meant to use sizediff_t as a temporary until we settle on a  
>>> final solution. When we do, I'll replace that symbol with whatever  
>>> we settle for.
>>>
>>>
>>> Andrei
>>>
>>> On 08/22/2010 05:14 PM, Walter Bright wrote:
>>>> But now we have:
>>>>
>>>> ptrdiff_t
>>>> sizediff_t
>>>> ssize_t
>>>>
>>>> all aliased to the same type. What's the rationale for when one  
>>>> uses which?
>>>>
>>>> dsource.org wrote:
>>>>> phobos commit, revision 1924
>>>>>
>>>>>
>>>>> user: andrei
>>>>>
>>>>> msg:
>>>>> replaced ssize_t with sizediff_t
>>>>>
>>>>> http://www.dsource.org/projects/phobos/changeset/1924
>>>>>
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