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Date:      Wed, 21 Feb 2018 10:52:39 -0800
From:      Benno Rice <benno@FreeBSD.org>
To:        Colin Percival <cperciva@tarsnap.com>
Cc:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   Re: svn commit: r329737 - head/stand/i386/boot2
Message-ID:  <B5BBB174-045A-4219-95D3-E9979F781260@FreeBSD.org>
In-Reply-To: <01000161b9b067ef-cf38721a-d658-4840-bd63-4e50310f3d52-000000@email.amazonses.com>
References:  <201802211810.w1LIApvC012656@repo.freebsd.org> <01000161b9b067ef-cf38721a-d658-4840-bd63-4e50310f3d52-000000@email.amazonses.com>

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> On Feb 21, 2018, at 10:46 AM, Colin Percival <cperciva@tarsnap.com> =
wrote:
>=20
> On 02/21/18 10:10, Benno Rice wrote:
>>  Curiously, changing whitespace seems to cause the md5 of the .o =
files to differ
>>  these days hence the following testing strategy:
>>=20
>>  Tested by:	objdump -d | md5 (both in-tree clang and lang/gcc6)
>=20
> Is this simply because line numbers are changing?  That isn't new; I =
remember
> a case where a security advisory touched a .h file and suddenly a huge =
number
> of binaries changed because they included header file line numbers.

No, it happened when I changed the indent of the while statement on line =
~132 in memcpy. I do suspect debug info though.=



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