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Re: Segfault in SVN 1.7.4

From: Hyrum K Wright <hyrum.wright_at_wandisco.com>
Date: Tue, 13 Mar 2012 07:58:10 -0500

On Tue, Mar 13, 2012 at 5:45 AM, Philip Martin
<philip.martin_at_wandisco.com> wrote:
> svn_at_feb17.org writes:
>
>> A little more information on this.  I have probably rebuilt svn about 20 times tonight from scratch, with
>> latest source from repository, and after upgrading libtools, autoconf, apr etc.  It failed the make check
>> tests every time.  I finally tried a minimal configure with just the packages needed to get it to build,
>>
>> e.g.
>>
>> ./configure --with-apr=/tools/apr --with-apr-util=/tools/httpd-2.2.19-src/srclib/apr-util/ --with-sqlite=/tools/sqlite-3.7.10
>>
>>
>> versus:
>>
>> ./configure --prefix=/tools/subersion-1.7.4 --with-apr=/tools/apr --with-apr-util=/tools/httpd-2.2.19-src/srclib/apr-util/ --with-apxs=/tools/httpd-2.2.19/bin/apxs --with-neon=/tools/neon-0.29.0 --with-sqlite=/tools/sqlite-3.7.10 --with-sasl=/tools/cyrus-sasl-2.1.25
>
> From tests.log:
>
>> svn_tests: E200004: While reading representation offsets for node-revision '0.0.t0-0':
>> svn_tests: E200004: Could not convert '%ld' into a number
>> FAIL:  lt-client-test 3: test svn_client_patch
>
> That looks like an APR problem, apr_snprintf appears to have output a
> literal "%ld" rather than interpreting it as an format specifier.  I
> don't know what would cause that, perhaps APR was built with the wrong
> options?  Something to do with 32/64 bit support?  Or large file
> support?
>
> APR is a dependency of both Subversion and Apache and they need to use
> APRs that are compatible, in almost all cases that means Apache and
> Subversion using the same APR.  --with-apxs is the flag that causes
> Subversion to build with Apache so my first guess is that you have
> multiple APRs that are incompatible.

APR doesn't properly parse the %lld format specifier, which is
sometime generated by APR on 64-bit systems, for example OS X:
https://issues.apache.org/bugzilla/show_bug.cgi?id=48476

The corresponding Subversion issue is:
http://subversion.tigris.org/issues/show_bug.cgi?id=3829

While I remember the problem being specific to OS X, and I *think* the
issue was to work around it on that platform, it could come back and
bite other users of 64-bit platforms.

-Hyrum

-- 
uberSVN: Apache Subversion Made Easy
http://www.uberSVN.com/
Received on 2012-03-13 13:58:42 CET

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