linux-kernel - Re: [PATCH] Support the nonstring variable attribute (gcc >= 8)

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Message-ID: <CANiq72mqdz=TjZYeK_HcW4O6MjYi7tsajgZW-9FiZL7BS38w6Q@mail.gmail.com>
Date:   Tue, 13 Mar 2018 16:57:49 +0100
From:   Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To:     Martin Sebor <msebor@...il.com>
Cc:     Arnd Bergmann <arnd@...db.de>,
        David Rientjes <rientjes@...gle.com>,
        Ingo Molnar <mingo@...nel.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Kees Cook <keescook@...omium.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Greg KH <gregkh@...uxfoundation.org>,
        "Lendacky, Thomas" <thomas.lendacky@....com>,
        Will Deacon <will.deacon@....com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Willy Tarreau <w@....eu>,
        Xiongfeng Wang <wangxiongfeng2@...wei.com>
Subject: Re: [PATCH] Support the nonstring variable attribute (gcc >= 8)

On Tue, Mar 13, 2018 at 4:41 PM, Martin Sebor <msebor@...il.com> wrote:
>>>>> Martin Sebor also asked me about this, he's the one that worked on
>>>>> the gcc code that introduced the warning. Sorry for not replying
>>>>> earlier.
>>>>>
>>>>
>>>> Maybe you can pass this to him? (maybe open a bug in gcc's bugzilla?)
>>>
>>>
>>>
>>> I've opened bug 84725 to extend attribute nonstring to the other
>>> two character types:
>>>
>>> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84725
>>>
>>
>> Thanks Martin! Please let us know whenever it is in the gcc trunk.
>
>
> No problem.  The patch has been committed into the trunk of GCC 8.
> Let me know if there's something else.  It may be too late to make
> any more changes like this before GCC 8.1 is released but further
> refinements to suppress false positives can be made in GCC 8.2.
>

Thanks a lot, I see it in gcc's
2bc9729cac37dee999f4fb48a166cffc198293aa ("PR tree-optimization/84725
- enable attribute nonstring for all narrow character types"). I will
compile it and see how it goes.

Cheers,
Miguel