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Re: Probable bug with svn copy

From: Noorul Islam K M <noorul_at_collab.net>
Date: Mon, 25 Jan 2010 12:47:46 +0530

> On Thu, 2009-12-17, Alan Spencer wrote:
>> I've been asked to analyse a problem we have had with subversion and
>> come to the conclusion there is a bug in at least the client.
>> The scenario was someone committed a new directory that made a build
>> fail and in order to free up the build this commit was reverse merges
>> (merge -c -RRRR)
>> The individual in question wanted their changes back and the opportunity
>> to fix the problem. This was done by reverse merging the reverse merge.
>> They then fixed the problems, which included renaming a file.
>> They then committed these changes and updated and all looked OK.
>> Updating on other working copy showed that both the original and renamed
>> file existed, but the working copy used did not show this.
>> I wanted to find out if this is user error or a bug and if it has been
>> logged already.
> This certainly looks like a bug. It sounds familiar, but I can't find it
> in the issue tracker.
>> And is there a way to achieve this without hitting this problem.
> I'm not sure.
>> Here is a log of my reproducing this:
> [...]
>> C:\dev\projects\build\build\svn-experiments\experiment-1>svn commit -m
>> "Revert revert and renaming svn merge -c -16666 . svn move
>> systemtest\audit\FirstName.txt systemtest\audit\SecondName.txt" .
>> Adding experiment-1\systemtest\audit
>> Adding experiment-1\systemtest\audit\SecondName.txt
>> Committed revision 16667.
> With a release candidate for 1.6.8, using the attached script, I get the
> same result as you.
> With a trunk build (r898816), using the attached script, I get a
> different problem here: the commit sort of fails:
> + svn commit -m 'Revert revert and renaming svn merge -c -16666 . svn
> move systemtest/audit/FirstName.txt systemtest/audit/SecondName.txt' .
> Adding experiment-1/systemtest/audit
> Deleting experiment-1/systemtest/audit/FirstName.txt
> Adding experiment-1/systemtest/audit/SecondName.txt
> svn: Commit succeeded, but other errors follow:
> svn: Error bumping revisions post-commit (details follow):
> svn: The node 'FirstName.txt' was not found.
> This is interesting, and it would be good to turn this script into a
> test in the test suite so that we remember to fix the bug. Any
> volunteers?


Please find attached test case patch for this scenario in trunk.


New XFail test case for reverse merge move scenario. Rename fails after
reverting a commit using reverse merge. This issue need to be fixed for
the test case to pass.

* subversion/tests/cmdline/copy_tests.py
  (reverse_merge_move): New function.
  (test_list): Added test.

Found by: alan.spencer
Suggested by: julianfoad
Patch by: Noorul Islam K M <noorul_at_collab.net>

Thanks and Regards

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Received on 2010-01-25 08:20:41 CET

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