GNU bug report logs - #17136
[PATCH] dfa: speed up memory allocation, port to IRIX

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From: Jim Meyering <jim <at> meyering.net>
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: Norihiro Tanaka <noritnk <at> kcn.ne.jp>, 17136 <at> debbugs.gnu.org
Subject: bug#17136: [PATCH] dfa: speed up memory allocation, port to IRIX
Date: Sat, 19 Apr 2014 14:21:45 -0700

[Message part 1 (text/plain, inline)]

On Fri, Apr 18, 2014 at 11:22 PM, Paul Eggert <eggert <at> cs.ucla.edu> wrote:
> Norihiro Tanaka wrote:
>>
>> Perhaps, I may run accross it in order to use old GCC (4.1.2 on CentOS
>> 5.10).
>
>
> Thanks, it's lucky you did, so that we won't be inundated by other people
> reporting similar problems.  I see now that we were passing
> -Wno-pointer-sign to GCC, and that this suppressed useful diagnostics on
> newer GCC instances (but not on your older one).  I installed the attached
> patch to fix both the signedness problem, and the diagnostic-suppression
> problem.

This has encouraged me to revisit grep's list of disabled gcc warnings.
It turns out that we've been disabling many unnecessarily.
The attached patch reenables those that do not elicit a warning
from gcc-4.9.

[k.txt (text/plain, attachment)]

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