linux-kernel - Re: [5.15-rc1][PPC][bisected 6d2ef226] mainline build breaks at ./include/linux/compiler_attributes.h:62:5: warning: "__has

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: <20210914162223.363dd7c2@canb.auug.org.au>
Date:   Tue, 14 Sep 2021 16:22:23 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Abdul Haleem <abdhalee@...ux.vnet.ibm.com>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        linux-next <linux-next@...r.kernel.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        sachinp <sachinp@...ux.vnet.ibm.com>, ndesaulniers@...gle.com,
        ojeda@...nel.org
Subject: Re: [5.15-rc1][PPC][bisected 6d2ef226] mainline build breaks at
 ./include/linux/compiler_attributes.h:62:5: warning: "__has_attribute"

Hi Abdul,

On Tue, 14 Sep 2021 11:39:44 +0530 Abdul Haleem <abdhalee@...ux.vnet.ibm.com> wrote:
>
> Today's mainline kernel fails to compile on my powerpc box with below errors
> 
> ././include/linux/compiler_attributes.h:62:5: warning: "__has_attribute" is not defined, evaluates to 0 [-Wundef]
>   #if __has_attribute(__assume_aligned__)
>       ^~~~~~~~~~~~~~~
> ././include/linux/compiler_attributes.h:62:20: error: missing binary operator before token "("
>   #if __has_attribute(__assume_aligned__)
>                      ^
> ././include/linux/compiler_attributes.h:88:5: warning: "__has_attribute" is not defined, evaluates to 0 [-Wundef]
>   #if __has_attribute(__copy__)
>       ^~~~~~~~~~~~~~~
> ././include/linux/compiler_attributes.h:88:20: error: missing binary operator before token "("
>   #if __has_attribute(__copy__)
> 
> Kernel builds fine when below patch is reverted
> 
> commit 6d2ef22 : compiler_attributes.h: drop __has_attribute() support for gcc4

Thanks for your report.

This is known and being addressed.

-- 
Cheers,
Stephen Rothwell

Content of type "application/pgp-signature" skipped