linux-kernel - Re: [PATCH 0/2] A couple of build fixes for x86 when using GCC 15

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Message-ID: <Z7nIbng2JHSg9in_@gmail.com>
Date: Sat, 22 Feb 2025 13:51:58 +0100
From: Ingo Molnar <mingo@...nel.org>
To: Kees Cook <kees@...nel.org>
Cc: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
	Nathan Chancellor <nathan@...nel.org>,
	Ard Biesheuvel <ardb@...nel.org>, Sam James <sam@...too.org>,
	Masahiro Yamada <masahiroy@...nel.org>,
	Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org,
	linux-efi@...r.kernel.org, stable@...r.kernel.org,
	Kostadin Shishmanov <kostadinshishmanov@...tonmail.com>,
	Jakub Jelinek <jakub@...hat.com>
Subject: Re: [PATCH 0/2] A couple of build fixes for x86 when using GCC 15


* Kees Cook <kees@...nel.org> wrote:

> On Tue, Jan 21, 2025 at 06:11:32PM -0700, Nathan Chancellor wrote:
> > GCC 15 changed the default C standard version from gnu17 to gnu23, which
> > reveals a few places in the kernel where a C standard version was not
> > set, resulting in build failures because bool, true, and false are
> > reserved keywords in C23 [1][2]. Update these places to use the same C
> > standard version as the rest of the kernel, gnu11.
> 
> Hello x86 maintainers!
> 
> I think this would be valuable to get into -rc1 since we're getting very
> close to a GCC 15 release. Can someone get this into -tip urgent,
> please? If everyone is busy I can take it via the hardening tree, as we
> appear to be the ones tripping over it the most currently. :)

Just an update, the x86 fix is now upstream via:

  ee2ab467bddf ("x86/boot: Use '-std=gnu11' to fix build with GCC 15")

Thanks,

	Ingo