linux-kernel - Re: [PATCH] compiler-gcc.h: Disable _

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <87bk0d2c51.fsf@igel.home>
Date: Tue, 24 Sep 2024 19:29:46 +0200
From: Andreas Schwab <schwab@...ux-m68k.org>
To: Geert Uytterhoeven <geert+renesas@...der.be>
Cc: Tony Ambardar <tony.ambardar@...il.com>,  Daniel Borkmann
 <daniel@...earbox.net>,  Miguel Ojeda <ojeda@...nel.org>,  Jiri Olsa
 <jolsa@...nel.org>,  Andrew Morton <akpm@...ux-foundation.org>,  Arnd
 Bergmann <arnd@...db.de>,  linux-kernel@...r.kernel.org
Subject: Re: [PATCH] compiler-gcc.h: Disable __retain on gcc-11

On Sep 24 2024, Geert Uytterhoeven wrote:

> All my gcc-11 compilers (Ubuntu 11.4.0-1ubuntu1~22.04) claim to support
> the __retain__ attribute, but only riscv64-linux-gnu-gcc-11 and
> x86_64-linux-gnu-gcc-11 (not x86_64-linux-gnux32-gcc-11!) actually do.
> The arm-linux-gnueabi-gcc-11.5.0 compiler from kernel.org crosstool
> fails in the same way:
>
>     error: ‘retain’ attribute ignored [-Werror=attributes]
>
> All my gcc-12 compilers seem to support the attribute.

That ultimately depends on binutils support for SHF_GNU_RETAIN (2.36+).

-- 
Andreas Schwab, schwab@...ux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510  2552 DF73 E780 A9DA AEC1
"And now for something completely different."