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Re: FAQ: new entry for the APR bug on OS X 10.4

From: <kfogel_at_collab.net>
Date: 2005-06-28 21:03:56 CEST

Bryan Dyck <bdyck@mac.com> writes:
> I recently ran into some trouble getting Subversion to work properly
> on OS X 10.4 after I upgraded the box that was serving (via Apache)
> my Subversion repository, and after bouncing it around on the users@
> list, it turned out to be the result of a bug in APR that appeared
> fairly recently when running on OS X 10.4. While the bug has been
> fixed in the latest APR sources, that is unusable with any stable
> version of Apache (unless you choose to run the 2.1.x line), and thus
> isn't really much of an option for those who don't feel comfortable
> serving their repos on bleeding-edge code.
>
> As a result of my experience, Karl asked if I would be willing to
> submit a FAQ entry on the issue as it isn't currently addressed, so
> without further ado, here's what I've written:

Thank you! Committed in r15182. It should show up on the live web
site within an hour.

For future reference, the easiest format for us is if you send a
patch; see http://subversion.tigris.org/mailing-list-guidelines.html#patches
for more about that.

Best,
-Karl

> Question:
>
> I am getting occasional and seemingly inconsistent errors while
> trying to check out over HTTP from a Subversion repository running on
> Mac OS X 10.4 (Tiger). Why?
>
> Answer:
>
> Note: It is assumed that your repository is being served by Apache
> 2.0.x.
>
> There is a bug in APR-0.9.6 that is present when it is running on
> Tiger, and shows up when you attempt to check out a file larger than
> 64K in size. The resulting check out fails, often with different
> error messages such as (the specifics of each message may differ
> somewhat):
>
> svn: Invalid diff stream: [tgt] insn 1 starts beyond the target view
> position
>
> svn: Unexpected end of svndiff input
>
> svn: REPORT request failed on '/path/to/repository'
> svn: REPORT of '/path/to/repository/!svn/vcc/default': Chunk
> delimiter was invalid
>
> and / or errors in your Apache error log like
>
> [error] Provider encountered an error while streaming a REPORT
> response. [500, #0]
> [error] A failure occurred while driving the update report editor
> [500, #190004]
>
> To confirm the presence of this bug - assuming you have access to the
> machine that the repository is being served from - try running a
> check out using a file:// URL, which will access the filesystem
> directly instead of going through Apache. If the resulting check out
> completes successfully, then it is almost certain that this is the
> problem.
>
> Currently, the best solution is to rebuild Apache and Subversion from
> their respective sources, setting the following environment variable
> before running configure for Apache:
>
> setenv ac_cv_func_poll no
>
> If you built APR / APR-Util separately (ie. you did not use the ones
> that come as part of the Apache tarball), you must set the
> environment variable before running configure for APR, as this is
> where the problem lies.
>
>
> This goes without saying, but please nitpick away, and thanks for the
> opportunity to make a very tiny contribution as well.
>
> Cheers,
> Bryan
>
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Received on Tue Jun 28 21:57:32 2005

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