shibboleth-sp2 version 2.3.1+dfsg-5ubuntu1 failed to build on armel

[Steve Langasek]

shibboleth-sp2 version 2.3.1+dfsg-5ubuntu1 failed to build on armel
Link to failed build: https://launchpad.net/ubuntu/+source/shibboleth-sp2/2.3.1+dfsg-5ubuntu1/+buildjob/2239993

Direct link to the build log: https://launchpad.net/ubuntu/+source/shibboleth-sp2/2.3.1+dfsg-5ubuntu1/+buildjob/2239993/+files/buildlog_ubuntu-natty-armel.shibboleth-sp2_2.3.1%2Bdfsg-5ubuntu1_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 1832 lines into the build log:

impl/XMLServiceProvider.cpp: In member function 'std::pair<bool, bool><unnamed>::XMLConfig::_ZTv0_n24_NK12_GLOBAL__N_19XMLConfig7getBoolEPKcS2_(const char*, const char*) const':
impl/XMLServiceProvider.cpp:311:25: internal compiler error: in expand_expr_real_1, at expr.c:8454
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-4.5/README.Bugs> for instructions.
make[4]: *** [XMLServiceProvider.lo] Error 1
make[4]: Leaving directory `/build/buildd/shibboleth-sp2-2.3.1+dfsg/shibsp'
make[3]: *** [all] Error 2
make[3]: Leaving directory `/build/buildd/shibboleth-sp2-2.3.1+dfsg/shibsp'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/build/buildd/shibboleth-sp2-2.3.1+dfsg'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/build/buildd/shibboleth-sp2-2.3.1+dfsg'
make: *** [build-stamp] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20110323-0359
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/shibboleth-sp2-2.3.1+dfsg