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Re: Compiler turns off warnings unexpectedly

From: "Andrew Pinski" <pinskia at gmail dot com>
To: "Jan Engelhardt" <jengelh at medozas dot de>
Cc: gcc at gcc dot gnu dot org
Date: Wed, 31 Dec 2008 21:05:40 -0500
Subject: Re: Compiler turns off warnings unexpectedly
References: <alpine.LSU.2.00.0901010256300.23831@fbirervta.pbzchgretzou.qr>

On Wed, Dec 31, 2008 at 9:02 PM, Jan Engelhardt <jengelh@medozas.de> wrote:
> Hi,
>
>
> I have here an (attached) testcase which unexpectedly turns off
> warnings. Compiling it using `gcc test.c -c -Wall` (or test.i) gives:
>
> test.c: In function 'pam_sm_authenticate':
> test.c:6: warning: implicit declaration of function 'undef'

This works on the trunk but fails on the 4.3 branch.

Thanks,
Andrew Pinski

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