From: "Arnd Bergmann" <arnd@arndb.de>
To: "Naresh Kamboju" <naresh.kamboju@linaro.org>,
"open list" <linux-kernel@vger.kernel.org>,
lkft-triage@lists.linaro.org,
"Linux Regressions" <regressions@lists.linux.dev>,
linuxppc-dev <linuxppc-dev@lists.ozlabs.org>
Cc: Nathan Chancellor <nathan@kernel.org>,
Anders Roxell <anders.roxell@linaro.org>,
Kees Cook <keescook@chromium.org>,
Niklas Schnelle <schnelle@linux.ibm.com>,
clang-built-linux <llvm@lists.linux.dev>,
Nick Desaulniers <ndesaulniers@google.com>,
"Aneesh Kumar K.V" <aneesh.kumar@kernel.org>,
Jeff Xu <jeffxu@chromium.org>,
"Naveen N. Rao" <naveen.n.rao@linux.ibm.com>,
Dan Carpenter <dan.carpenter@linaro.org>
Subject: Re: powerpc: io-defs.h:43:1: error: performing pointer arithmetic on a null pointer has undefined behavior [-Werror,-Wnull-pointer-arithmetic]
Date: Tue, 16 Apr 2024 13:55:57 +0200 [thread overview]
Message-ID: <f7d8cd55-5a14-4391-884f-0b072790fa41@app.fastmail.com> (raw)
In-Reply-To: <3d139886-9549-4384-918a-2d18480eb758@app.fastmail.com>
On Tue, Apr 16, 2024, at 13:01, Arnd Bergmann wrote:
> On Tue, Apr 16, 2024, at 11:32, Naresh Kamboju wrote:
>> The Powerpc clang builds failed due to following warnings / errors on the
>> Linux next-20240416 tag.
>>
>> Powerpc:
>> - tqm8xx_defconfig + clang-17 - Failed
>> - allnoconfig + clang-17 - Failed
>> - tinyconfig + clang-17 - Failed
>>
>> Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
>
> I'm not sure why this showed up now, but there is a series from
> in progress that will avoid this in the future, as the same
> issue is present on a couple of other architectures.
>
I see now, it was introduced by my patch to turn on -Wextra
by default. I had tested that patch on all architectures
with allmodconfig and defconfig, but I did not test any
powerpc configs with PCI disabled.
Arnd
next prev parent reply other threads:[~2024-04-16 11:57 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-16 9:32 powerpc: io-defs.h:43:1: error: performing pointer arithmetic on a null pointer has undefined behavior [-Werror,-Wnull-pointer-arithmetic] Naresh Kamboju
2024-04-16 10:38 ` Segher Boessenkool
2024-04-16 11:09 ` David Laight
2024-04-16 11:01 ` Arnd Bergmann
2024-04-16 11:55 ` Arnd Bergmann [this message]
2024-04-16 12:42 ` Dan Carpenter
2024-04-16 12:44 ` Arnd Bergmann
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=f7d8cd55-5a14-4391-884f-0b072790fa41@app.fastmail.com \
--to=arnd@arndb.de \
--cc=anders.roxell@linaro.org \
--cc=aneesh.kumar@kernel.org \
--cc=dan.carpenter@linaro.org \
--cc=jeffxu@chromium.org \
--cc=keescook@chromium.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=lkft-triage@lists.linaro.org \
--cc=llvm@lists.linux.dev \
--cc=naresh.kamboju@linaro.org \
--cc=nathan@kernel.org \
--cc=naveen.n.rao@linux.ibm.com \
--cc=ndesaulniers@google.com \
--cc=regressions@lists.linux.dev \
--cc=schnelle@linux.ibm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox