linux-kernel - Re: [PATCH] gpio: acpi: work around false-positive -Wstring-overflow warning

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Message-ID: <CAK8P3a2RGZFc3_XpgyfuxwYy-vOoYkkamxQzma8JKwLjCCJasQ@mail.gmail.com>
Date:   Wed, 6 Sep 2017 21:53:51 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Joe Perches <joe@...ches.com>
Cc:     Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Wei Yongjun <weiyongjun1@...wei.com>,
        linux-gpio@...r.kernel.org,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] gpio: acpi: work around false-positive -Wstring-overflow warning

On Wed, Sep 6, 2017 at 5:52 PM, Joe Perches <joe@...ches.com> wrote:
> On Wed, 2017-09-06 at 17:47 +0200, Arnd Bergmann wrote:

>> As suggested by Andy, this changes the format string to have a fixed length.
>> Since modifying the range check did not help, I also opened a bug against
>> gcc, see link below.
>
> The code has
>
>         int pin
>
> does changing pin to unsigned int matter?

No difference, see also the gcc bugzilla report.

        Arnd