GNU bug report logs - #78880
od Heap-buffer overflow

Previous Next

Full log

Message #55 received at 78880 <at> debbugs.gnu.org (full text, mbox):

From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Pádraig Brady <P <at> draigBrady.com>
Cc: 78880 <at> debbugs.gnu.org
Subject: Re: bug#78880: od Heap-buffer overflow
Date: Sun, 29 Jun 2025 17:21:53 -0700

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

On 2025-06-29 05:17, Pádraig Brady wrote:
> If we want the compiler to just apply Dead Code Elimination here,
> then it may be best to push/pop ignoring that warning ?

Or, since GCC didn't complain about similar code elsewhere, we can 
change the complained-about code to look more like the code elsewhere. 
This is more likely to pacify any non-GCC compilers that are also flummoxed.

There's a similar situation with the floating point formats, which I 
assume you didn't run into because they're all distinct on your platform.

I installed the attached patch which I hope pacifies GCC on your 
platform. I didn't observe the problem with gcc (GCC) 15.1.1 20250521 
(Red Hat 15.1.1-2) on x86-64 so I can't easily test the patch myself.

[0001-od-pacify-gcc-Wduplicated-cond.patch (text/x-patch, attachment)]

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.