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Subject: Re: [C PATCH] Fix -Wunused-function (PR debug/66869)
To: Jakub Jelinek <jakub@redhat.com>,        Richard Biener <richard.guenther@gmail.com>
References: <20160125203829.GP3017@tucnak.redhat.com> <CAFiYyc12VJd=HcmH6YsnwVWinfzBnMzq-WyujU85eg05LCUReg@mail.gmail.com> <20160126161813.GB3017@tucnak.redhat.com> <CAFiYyc1Kn++hPBBXw1NcjROxpTJbBdPy4Eu=ZXfMmPkhQ8H0=A@mail.gmail.com> <20160127185159.GT3017@tucnak.redhat.com>
Cc: "Joseph S. Myers" <joseph@codesourcery.com>,        Marek Polacek <polacek@redhat.com>, Jason Merrill <jason@redhat.com>,        Jan Hubicka <hubicka@ucw.cz>, GCC Patches <gcc-patches@gcc.gnu.org>
From: Jeff Law <law@redhat.com>
Message-ID: <56A91A7A.3060700@redhat.com>
Date: Wed, 27 Jan 2016 19:29:00 -0000
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On 01/27/2016 11:51 AM, Jakub Jelinek wrote:
> Hi!
>
> On Wed, Jan 27, 2016 at 11:17:18AM +0100, Richard Biener wrote:
>> No, simply warn and set TREE_NO_WARNING so cgraph doesn't warn again.
>
> This seems to work too, bootstrapped/regtested on x86_64-linux and
> i686-linux, ok for trunk?
>
> 2016-01-25  Jakub Jelinek  <jakub@redhat.com>
>
> 	PR debug/66869
> 	* c-decl.c (c_write_global_declarations_1): Warn with
> 	warn_unused_function if static prototype without definition
> 	is not C_DECL_USED.
>
> 	* gcc.dg/pr66869.c: New test.
OK.
jeff