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From: Keith Thompson <Keith.S.Thompson+u@gmail.com>
Newsgroups: comp.lang.c++
Subject: Re: "Richard Stallman Announces C Reference"
Date: Mon, 19 Sep 2022 12:27:43 -0700
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Juha Nieminen <nospam@thanks.invalid> writes:
> David Brown <david.brown@hesbynett.no> wrote:
>> (as well as being modernised to include 
>> C11, now that it is the standard for the kernel).
>
> Speaking of which, I find it a bit surprising that there seems to be no
> official rule, directive or even recommendation on which version of C
> can/should be used in kernel code. Or at least I can't find this anywhere
> (I have tried).
>
> The only thing I have found is some directive/rule that the kernel has
> to compile with gcc 3.3, but AFAIK even that rule is old and obsolete
> (and the current kernel might not compile with that version of gcc
> anymore.)

https://www.kernel.org/doc/html/latest/process/programming-language.html

    The kernel is written in the C programming language [c-language].
    More precisely, the kernel is typically compiled with gcc [gcc]
    under -std=gnu11 [gcc-c-dialect-options]: the GNU dialect of
    ISO C11. clang [clang] is also supported, see docs on Building
    Linux with Clang/LLVM.

-- 
Keith Thompson (The_Other_Keith) Keith.S.Thompson+u@gmail.com
Working, but not speaking, for Philips
void Void(void) { Void(); } /* The recursive call of the void */