linux-kernel - Ping: [PATCH] uapi: Make __{u,s}64 match {u,}int64

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Date:   Fri, 17 Jun 2022 14:13:12 +0200
From:   Alejandro Colomar <alx.manpages@...il.com>
To:     Cyril Hrubis <chrubis@...e.cz>
Cc:     "linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
        libc-alpha@...rceware.org,
        "linux-api@...r.kernel.org" <linux-api@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        David Laight <David.Laight@...lab.com>,
        Zack Weinberg <zack@...folio.org>,
        "ltp@...ts.linux.it" <ltp@...ts.linux.it>,
        David Howells <dhowells@...hat.com>
Subject: Ping: [PATCH] uapi: Make __{u,s}64 match {u,}int64_t in userspace

Hi Cyril,

On 12/8/21 16:33, Cyril Hrubis wrote:
> Hi!
>>> I could be persuaded otherwise with an example of a program for which
>>> changing __s64 from 'long long' to 'long' would break *binary* backward
>>> compatibility, or similarly for __u64.
>>
>> C++ could break.
> 
> Thinking of this again we can detect C++ as well so it can be safely
> enabled just for C with:
> 
> #if !defined(__KERNEL__) && !defined(__cplusplus) && __BITSPERLONG == 64
> # include <asm-generic/int-l64.h>
> #else
> # include <asm-generic/int-ll64.h>
> #endif
> 

I'm very interested in seeing this merged, as that would allow 
simplifying the man-pages by removing unnecessary kernel details such as 
u64[1].  How is the state of this patch?

Cheers,

Alex


[1]: 
<https://lore.kernel.org/linux-man/20210423230609.13519-1-alx.manpages@gmail.com/T/#u>

-- 
Alejandro Colomar
<http://www.alejandro-colomar.es/>