From: Roland Dreier <rdreier@cisco.com>
To: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
       Arjan van de Ven <arjan@infradead.org>, torvalds@linux-foundation.org,
       linux-kernel@vger.kernel.org, mingo@elte.hu,
       Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Subject: Re: [PATCH] fastboot: Introduce an asynchronous function call mechanism
References: <20081012194427.2e21c22e@infradead.org>
	<20081015014117.faff3a61.akpm@linux-foundation.org>
	<20081015075246.2e1610f3@infradead.org>
	<20081015095905.41219c9d.akpm@linux-foundation.org>
	<20081015175252.GA10600@x200.localdomain>
Date: Wed, 15 Oct 2008 10:55:15 -0700
In-Reply-To: <20081015175252.GA10600@x200.localdomain> (Alexey Dobriyan's
	message of "Wed, 15 Oct 2008 21:52:52 +0400")
Message-ID: <aday70pd9q4.fsf@cisco.com>
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 > > I was actually "?"ing at the "= 0".  I thought that would be obvious
 > > but it's whizzed past two people so far :(
 > 
 > Is there evidence that some gccs will not add such variable to .bss?
 > 
 > Because "= 0;" is more readable.

From: http://gcc.gnu.org/gcc-3.3/changes.html

  GCC 3.3.1 automatically places zero-initialized variables in the .bss
  section on some operating systems. Versions of GNU Emacs up to (and
  including) 21.3 will not work correctly when using this optimization;
  you can use -fno-zero-initialized-in-bss to disable it.

so presumably gcc 3.2 (which we still support, right?) does not do this
(and puts such variables in .data).

 - R.
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