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Date:      Fri, 11 Jun 2010 11:51:21 -0400
From:      John Baldwin <jhb@freebsd.org>
To:        freebsd-fs@freebsd.org
Subject:   Re: Testers: NFSv3 support for pxeboot for nfs diskless root
Message-ID:  <201006111151.21925.jhb@freebsd.org>
In-Reply-To: <Pine.GSO.4.63.1006111104400.20439@muncher.cs.uoguelph.ca>
References:  <Pine.GSO.4.63.1006091934390.22971@muncher.cs.uoguelph.ca> <20100611103803.GA1855@pm513-1.comsys.ntu-kpi.kiev.ua> <Pine.GSO.4.63.1006111104400.20439@muncher.cs.uoguelph.ca>

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On Friday 11 June 2010 11:07:57 am Rick Macklem wrote:
> 
> On Fri, 11 Jun 2010, Andrey Simonenko wrote:
> 
> >
> > Shouldn't return values from malloc() calls be checked?
> 
> Yea, I suppose that's a good idea, although I think all that can be
> done is print a failure message, since it's "dead in the water" at
> that point.
> 
> > Also additional checks for NULL values before free() calls can be removed,
> > at least this will reduce size of code.  There is PR/83424 related to 
this.
> >
> My only concern here would be if someone were to change Free() so it
> doesn't check for a null pointer, but since it does now, I suppose
> it's a feature and shouldn't be changed.
> 
> Anyone else have an opinion on this? (ie. Whether I should just assume
> that Free() checks for the NULL ptr.)

free() in the kernel and userland also check for NULL, so I think it's ok to 
assume the same behavior for libstand.

-- 
John Baldwin



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