Thread (39 messages) 39 messages, 10 authors, 2022-08-25

Re: [PATCH v3] Many pages: Document fixed-width types with ISO C naming

From: Xi Ruoyao <xry111@xry111.site>
Date: 2022-08-25 08:10:00
Also in: bpf, linux-api, linux-arch, lkml, ltp

On Thu, 2022-08-25 at 09:48 +0200, Alejandro Colomar wrote:
Hi Xi,

On 8/25/22 09:28, Xi Ruoyao wrote:
quoted
On Thu, 2022-08-25 at 09:20 +0200, Alejandro Colomar via Gcc-patches
wrote:
quoted
I don't know for sure, and I never pretended to say otherwise.  But what
IMHO the kernel could do is to make the types compatible, by typedefing
to the same fundamental types (i.e., long or long long) that user-space
types do.
In user-space things are already inconsistent as we have multiple libc
implementations.  Telling every libc implementation to sync their
typedef w/o a WG14 decision will only cause "aggressive discussion" (far
more aggressive than this thread, I'd say).

If int64_t etc. were defined as builtin types since epoch, things would
be a lot easier.  But we can't change history.
This would be great.  I mean, the fundamental types should be u8, u16,
... and int, long, ... typedefs for these, and not the other way around, 
if the language was designed today.

Maybe GCC could consider something like that.
GCC already have __UINT8_TYPE__ etc. but again telling all libc
implementations to use "typedef __UINT8_TYPE__ uint8_t" etc. will make
no effect expect annoying their maintainers.

-- 
Xi Ruoyao [off-list ref]
School of Aerospace Science and Technology, Xidian University
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