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Re: Testers wanted!

From "Rod Pemberton" <dont_use_email@xnothavet.cqm>
Newsgroups comp.lang.misc
Subject Re: Testers wanted!
Date 2014-05-05 04:13 -0400
Organization Aioe.org NNTP Server
Message-ID <op.xfdnr6oh6zenlw@localhost> (permalink)
References <bsf197F4a8fU2@mid.individual.net> <op.xfc6a9e16zenlw@localhost> <bsorktF6lsqU1@mid.individual.net>

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On Mon, 05 May 2014 03:07:09 -0400, Nils M Holm <news2009@t3x.org> wrote:
> Rod Pemberton <dont_use_email@xnothavet.cqm> wrote:

>> So, what did you change from April 25th to May 4th? ...
>
> Thanks for the suggestion, but I think this is the wrong path.
> One of the testers wrote me in private and told me that he could
> reproduce that linking the *same* *objects* with GNU ld twice in
> a row generates differing binaries.
>

Ok.  But, it seems to be consistend for both here.

> And even if it did not, a compiler bug would not answer the
> question why the assembly output for stages 2 and 3 is identical
> (while the binaries are not).

My point was that something changed the expected result.
It's possible, that it can be found if you work from good
results to bad.  I.e., a second option instead of attempting
to use logic to find and fix the problem, is to locate the point
at which things changed.

>> Are all the changed addresses in the binaries different by the
>> same amount? (I haven't checked.) I.e., fixed quantity of bytes?
>
> Good question! I will have a look.
>

A bunch from 'hexdump -C' differences seem to be 120 bytes different.

A 'readelf -a' of the program headers gives different load location
results.  The difference for readelf is 132 bytes. scc has a value
of 0x000176ee for one of it's load locations, while scc1 has 0x00017766.
I'm not that familiar with readelf, yet, so it may have more information.


Rod Pemberton

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Thread

Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-01 13:41 +0000
  Re: Testers wanted! "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-05-01 17:08 -0400
    Re: Testers wanted! "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-05-01 17:15 -0400
    Re: Testers wanted! "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-05-01 18:14 -0400
      Re: Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-02 06:23 +0000
        Re: Testers wanted! "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-05-02 06:13 -0400
          Re: Testers wanted! "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-05-02 06:38 -0400
          Re: Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-02 18:23 +0000
            Re: Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-02 18:42 +0000
              Re: Testers wanted! "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-05-02 21:02 -0400
                Re: Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-03 08:00 +0000
                Re: Testers wanted! "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-05-03 08:33 -0400
                Re: Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-03 13:40 +0000
  Re: Testers wanted! "BartC" <bc@freeuk.com> - 2014-05-02 22:02 +0100
    Re: Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-03 08:11 +0000
      Re: Testers wanted! "BartC" <bc@freeuk.com> - 2014-05-03 10:22 +0100
        Re: Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-03 10:03 +0000
        Re: Testers wanted! "BartC" <bc@freeuk.com> - 2014-05-03 11:02 +0100
          Re: Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-03 10:58 +0000
            Re: Testers wanted! "BartC" <bc@freeuk.com> - 2014-05-03 12:44 +0100
              Re: Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-03 13:42 +0000
    Re: Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-03 08:21 +0000
      Re: Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-03 11:03 +0000
  Re: Testers wanted! Luuk <luuk@invalid.lan> - 2014-05-03 12:33 +0200
    Re: Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-03 10:59 +0000
      Re: Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-03 11:02 +0000
        Re: Testers wanted! Luuk <luuk@invalid.lan> - 2014-05-03 13:12 +0200
          Re: Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-03 11:18 +0000
            Re: Testers wanted! Luuk <luuk@invalid.lan> - 2014-05-03 16:14 +0200
              Re: Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-03 14:28 +0000
  Re: Testers wanted! "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-05-04 21:55 -0400
    Re: Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-05 07:07 +0000
      Re: Testers wanted! "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-05-05 04:13 -0400
        Re: Testers wanted! "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-05-05 04:18 -0400
          Re: Testers wanted! "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-05-05 06:52 -0400
            Re: Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-07 14:49 +0000
              Re: Testers wanted! "James Harris" <james.harris.1@gmail.com> - 2014-05-07 20:50 +0100
                Re: Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-08 08:37 +0000
                Re: Testers wanted! "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2014-05-08 10:50 +0200
                Re: Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-08 08:55 +0000
                Re: Testers wanted! "James Harris" <james.harris.1@gmail.com> - 2014-05-08 10:21 +0100
                Re: Testers wanted! George Neuner <gneuner2@comcast.net> - 2014-05-08 13:43 -0400
    Re: Testers wanted! Luuk <luuk@invalid.lan> - 2014-05-05 20:29 +0200
      Re: Testers wanted! "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-05-05 19:09 -0400
        Re: Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-12 07:06 +0000
          Re: Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-12 16:18 +0000
            Re: Testers wanted! "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-05-12 20:00 -0400
              Re: Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-13 14:24 +0000
                Re: Testers wanted! "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-05-13 17:04 -0400
                Re: Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-14 16:50 +0000
                Re: Testers wanted! "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-05-14 19:04 -0400
                Re: Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-16 09:39 +0000
                Re: Testers wanted! "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-05-16 17:33 -0400
                Re: Testers wanted! Nils M Holm <news2009@t3x.org> - 2014-05-17 20:25 +0000
                Re: Testers wanted! "Rod Pemberton" <dont_use_email@xnothavet.cqm> - 2014-05-30 04:28 -0400

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