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Re: Possible recrudescence of issue 3113 (ra_serf update "APR does not understand this error code")

From: Branko Cibej <brane_at_xbc.nu>
Date: Fri, 20 Mar 2009 01:00:36 +0100

Sounds like something somewhere is sometimes stomping on the heap or
stack. What happens if you run the magic checkout or update with valgrind?

-- Brane

Jack Repenning wrote:
> In Issue 3113, lgo reported intermittent failures in update-like
> operations over ra_serf, including the message "APR does not
> understand this error code." He investigated, but was not able to
> reproduce it in the trunk of that time. He and Kamesh each postulated
> some revision that might have fixed it, and it was resolved on "unable
> to reproduce" grounds, as much as anything else.
>
> I think it just happened to me, in 1.6.0-rc3 (the download tarballs).
>
> Complete with the annoying "and then it went away" feature.
>
> So, maybe there really is a problem here, and it's intermittent based
> on some variable none of us has thought to try. Or maybe not. And
> anyway, none of us yet has thought what to try, so it's still at most
> "irreproducible." I know, I know: this report is rapidly approaching
> "useless."
>
> Here are the details of my experience, for what they're worth. Maybe
> they'll click in someone's head?
>
> I built on OS X 10.5.6, under Xcode 3.1.2, from the downloaded
> tarballs subversion-1.6.0-rc3.tar.gz and subversion-deps-1.6.0-
> rc3.tar.gz. I also download, build, and incorporate BDB db-4.2.52
> (with patches 1-5) and expat-1.95.8. I unpack the deps into the
> subversion build tree, and build them all together. Configure stati
> are attached for the truly curious. My build produces both the command
> line and C libraries; my principal interest is to bind the libraries
> to my application, SCPlugin.
>
> Having built SCPlugin, I found (with 100% reproducibility) that
> checkout and update failed, reporting "APR does not understand this
> error code." It's notable, however, that the command-line binary built
> in the same "make" did not display this problem. I used otool to
> confirm that my program was not mixing APR versions, did a little
> debugging, came up dry, and knocked off for the day.
>
> Today, I fire up the debugger again, and ... everything works just
> fine. No rebuilds of any kind in between. No reboots of any kind in
> between. I am, today, working on a new launch of my app, but I had
> killed and relaunched it several times, last night. All runs,
> successful and failing, were under the Xcode IDE and gdb debugger, and
> I am also, today, working on a new launch of the IDE, and I don't
> recall restarting it yesterday, so it's possible the variation is the
> IDE's fault.
>
> Today (but not yesterday, sadly), I have used Activity Monitor's list
> of open files to confirm that my app has open only APR 1.x libraries.
>

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Received on 2009-03-20 01:01:01 CET

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