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From: "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com>
Newsgroups: comp.lang.c
Subject: Re: Suggested method for returning a string from a C program?
Date: Sat, 22 Mar 2025 14:51:23 -0700
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On 3/22/2025 6:06 AM, bart wrote:
> On 22/03/2025 03:50, Keith Thompson wrote:
>> bart <bc@freeuk.com> writes:
>>> On 21/03/2025 19:04, Keith Thompson wrote:
>>>> bart <bc@freeuk.com> writes:
>>>>> On 21/03/2025 01:47, Keith Thompson wrote:
>>>>>> bart <bc@freeuk.com> writes:
>>>>>> You're complaining about how much work it is.  All that work
>>>>>> has been done for you by the implementers.  Decades ago.
>>>>>
>>>>> We are talking about defining types like 'int32' on top of 'char short
>>>>> int long', yes? Then how difficult could it possibly be?
>>>> If you want <stdint.h> and <inttypes.h> headers that work correctly
>>>> with all relevant compilers, it's not particularly easy.  I'll note
>>>> that the MUSL implementation of <stdint.h> is 117 lines, compared to
>>>> 308 for GNU libc.
>>>>
>>>>>> I just did a quick test comparing complation times for an empty
>>>>>> program with no #include directives and an empty program with
>>>>>> #include directives for <stdint.h> and <inttypes.h>.  The
>>>>>> difference was about 3 milliseconds.  I quite literally could not
>>>>>> care care less.
>>>>>
>>>>> I'm sorry but that's a really poor attitude, with bad
>>>>> consequences. You're saying it doesn't matter how complex a header or
>>>>> set of headers is, even when out of proportion to the task.
>>>>>
>>>>> But this is why we end up with such complicated headers.
>>>> Complicated headers that work.
>>>> [...\
>>>>
>>>>> I think your response clarifies matters. Nobody cares, even as
>>>>> compilers grind to a halt under all preprocessing.
>>>> If compilers ground to a halt, I would certainly care.  They don't.
>>>
>>> 50 modules each including GTK.h say, which was 0.33Mloc across 500
>>> headers (so reading 16Mloc and 25,000 headers in total when all are
>>> compiled) would not impact your builds at all? OK.
>>
>> First you talked about compilers grinding to a halt, then you talked
>> about headers not impacting builds at all.  Those goalposts of yours
>> move *fast*.
> 
> You missed the "?".
> 
>> For the record, as you can see above, I did not say that builds would
>> not be impacted.  Do not put words into my mouth again.
> 
> Let me ask it again: so ploughing through a third of a million lines of 
> code across hundreds of #includes, even at the faster throughput 
> compared with compiling code, for a module of a few hundred lines, will 
> have little impact?
> 
> How about a project with 50 or 100 modules, each using that big header, 
> that needs to be built from scratch?

For some reason you are making me think of pre-compiled headers. Ever 
include <windows.h> even with WIN32_LEAN_AND_MEAN? ;^)

Not even sure of this is in context, but you make be think of PCH.

Sorry. ;^o

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