This is the mail archive of the libc-alpha@sourceware.org mailing list for the glibc project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

Re: [patch] Cleanup: don't call free(NULL) unnecessarily

From: Paul Pluzhnikov <ppluzhnikov at google dot com>
To: Rich Felker <dalias at aerifal dot cx>
Cc: Thomas Schwinge <thomas at codesourcery dot com>, ahh at google dot com, libc-alpha at sourceware dot org
Date: Wed, 6 Mar 2013 07:10:02 -0800
Subject: Re: [patch] Cleanup: don't call free(NULL) unnecessarily
References: <ye6qehft7j12.fsf@elbrus2.mtv.corp.google.com> <87mwuh2ars.fsf@kepler.schwinge.homeip.net><20130306150645.GT20323@brightrain.aerifal.cx>

On Wed, Mar 6, 2013 at 7:06 AM, Rich Felker <dalias@aerifal.cx> wrote:

> I think there may also be a concern that gcc will eliminate the check
> based on its knowledge of the semantics of free...

That's true.

One way to deal with this is proposed in
http://sourceware.org/ml/libc-alpha/2013-03/msg00141.html

Thanks,
-- 
Paul Pluzhnikov

References:
- [patch] Cleanup: don't call free(NULL) unnecessarily
  - From: Paul Pluzhnikov
- Re: [patch] Cleanup: don't call free(NULL) unnecessarily
  - From: Thomas Schwinge
- Re: [patch] Cleanup: don't call free(NULL) unnecessarily
  - From: Rich Felker

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]