Confusing Mercurial history - was: Re: Hotspot segfaulting on Linux SPARC

[John Paul Adrian Glaubitz]

On 04/17/2018 11:34 AM, Stefan Karlsson wrote:
> As I Severin said, these numbers are your local numbers and might not at all match what I have in my copy of jdk/hs. However, if we assume that they are the same, I get this:

I actually checked the revision numbers in the remote repository:

> http://hg.openjdk.java.net/jdk/hs/rev/f5a564180f37 is 46668
> http://hg.openjdk.java.net/jdk/hs/rev/ff7b9f61209e is 46667
> http://hg.openjdk.java.net/jdk/hs/rev/6e1b59330482 is 46931

The revision numbers match my local repository checkout.

> hg log -r 'reverse(0::46931)' --graph
> 
> o  changeset:   46931:6e1b59330482
> |  parent:      46253:f7daf2e39cc8
> |  user:        glaubitz
> |  date:        Mon Aug 21 15:17:21 2017 +0200
> |  summary:     8186433: Compiler flag -arch=sparc should not be passed on linux-sparc
> |
> o  changeset:   46253:f7daf2e39cc8
> |  parent:      46250:3041c580db2a
> |  user:        bobv
> |  date:        Mon Aug 21 12:08:03 2017 -0400
> |  summary:     8186115: libelf still referenced after 8172670
> 
> Where the parent of 46931 is 46253.
> 
> And hg log -r '46668::46931'
> 
> gives back nothing indicating that 46668 is not a ancestor of 46931.

Ok, that's odd. I don't understand how one is supposed to perform bisecting
then.

> You can also find the first common ancestor of the two change sets:
> 
> hg log -r 'ancestor(46667,46931)'
> changeset:   45825:4fa7bd62eb84
> parent:      45761:9ef5029b247b
> user:        alanb
> date:        Wed Jul 05 13:25:45 2017 +0100
> summary:     8183503: Update hotspot tests to allow for unique test classes directory
> 
> Can you share the SHA number for your 46668 change, and maybe the summry line as well?
That would be:

changeset 46668:f5a564180f37
8182165: The header atomic_linux_sparc.inline.hpp should be named atomic_linux_sparc.hpp

Adrian

-- 
  .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - glaubitz at debian.org
`. `'   Freie Universitaet Berlin - glaubitz at physik.fu-berlin.de
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