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Re: [C PATCH] Fix -Wunused-function (PR debug/66869)

From: Jeff Law <law at redhat dot com>
To: Jakub Jelinek <jakub at redhat dot com>, Richard Biener <richard dot guenther at gmail dot com>
Cc: "Joseph S. Myers" <joseph at codesourcery dot com>, Marek Polacek <polacek at redhat dot com>, Jason Merrill <jason at redhat dot com>, Jan Hubicka <hubicka at ucw dot cz>, GCC Patches <gcc-patches at gcc dot gnu dot org>
Date: Wed, 27 Jan 2016 12:28:58 -0700
Subject: Re: [C PATCH] Fix -Wunused-function (PR debug/66869)
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References: <20160125203829 dot GP3017 at tucnak dot redhat dot com> <CAFiYyc12VJd=HcmH6YsnwVWinfzBnMzq-WyujU85eg05LCUReg at mail dot gmail dot com> <20160126161813 dot GB3017 at tucnak dot redhat dot com> <CAFiYyc1Kn++hPBBXw1NcjROxpTJbBdPy4Eu=ZXfMmPkhQ8H0=A at mail dot gmail dot com> <20160127185159 dot GT3017 at tucnak dot redhat dot com>

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

Follow-Ups:
- [C++ PATCH] Fix -Wunused-function (PR debug/66869)
  - From: Jakub Jelinek

References:
- [C PATCH] Fix -Wunused-function (PR debug/66869)
  - From: Jakub Jelinek
- Re: [C PATCH] Fix -Wunused-function (PR debug/66869)
  - From: Richard Biener
- Re: [C PATCH] Fix -Wunused-function (PR debug/66869)
  - From: Jakub Jelinek
- Re: [C PATCH] Fix -Wunused-function (PR debug/66869)
  - From: Richard Biener
- Re: [C PATCH] Fix -Wunused-function (PR debug/66869)
  - From: Jakub Jelinek

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