Subj : Re: RP2350 and Pico 2 - things missing
To   : druck
From : Richard Kettlewell
Date : Thu Aug 29 2024 09:32:49

druck <news@druck.org.uk> writes:
> You can do this on Windows too, but they had to bastardise their C
> compiler for people that hadn't. It's the only one that on a 64 bit
> platform that has long as 32 bits.
>
> Windows:-
>
> int=32 bits, long=32 bits, long long=64 bits
>
> Everyone else in the bloody world:-

(Almost everyone; Cray had 64-bit int.)

> int=32 bits, long=64 bits, long long=64 bits

THe Windows approach is well within what the C language spec allows, and
simplified the adaptation of existing Windows application code to 64-bit
platforms. The equivalent exercise in Linux needed attention to anything
that made (sometimes invisible) assumptions about the definition of
long.

I don’t think I’d fault either decision though the fact that we’ve ended
up with two conventions does make writing/maintaining portable code a
bit more annoying, though not really any more so than the slightly
different set of things compilers warn about or the lack of GCC
compatibility from MSVC. I think MS should bow the inevitable and
replace cl with Clang.

--
https://www.greenend.org.uk/rjk/

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