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To: linux-btrfs@vger.kernel.org
From: Martin <m_btrfs@ml1.co.uk>
Subject: Re: progs integration branch moved to master (new default leafsize)
Date: Fri, 22 Nov 2013 19:50:17 +0000
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References: <20131108220135.3802.39092@localhost.localdomain> <l5jtgo$6q1$1@ger.gmane.org> <20131121233751.5312.13383@localhost.localdomain> <l6n6l2$ln6$1@ger.gmane.org> <20131122134038.5312.42200@localhost.localdomain>
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On 22/11/13 13:40, Chris Mason wrote:
> Quoting Martin (2013-11-22 04:03:41)

>>  * QA Notice: Package triggers severe warnings which indicate that it
>>  *            may exhibit random runtime failures.
>>  * disk-io.c:91:5: warning: dereferencing type-punned pointer will break
>> strict-aliasing rules [-Wstrict-aliasing]
>>  * volumes.c:1930:5: warning: dereferencing type-punned pointer will
>> break strict-aliasing rules [-Wstrict-aliasing]
>>  * volumes.c:1931:6: warning: dereferencing type-punned pointer will
>> break strict-aliasing rules [-Wstrict-aliasing]
> 
> Does gentoo modify the optimizations from the Makefile?  We actually
> have many strict-aliasing warnings, but I didn't think they came up
> until -O2.

For that system, I have -Os set in the Gentoo "make.conf".


> At any rate, I'm adding -fno-strict-aliasing just to be sure.

Good to catch to avoid unexpectedness,


Regards,
Martin