dansguardian version 2.10.1.1-3 failed to build on amd64 with GCC-4.6/oneiric

dansguardian version 2.10.1.1-3 failed to build on amd64 with GCC-4.6/oneiric
Link to failed build: https://launchpad.net/ubuntu/+archive/test-rebuild-20110413/+buildjob/2448110

Details about the rebuild:
https://lists.ubuntu.com/archives/ubuntu-devel/2011-April/033042.html

Direct link to the build log: https://launchpad.net/ubuntu/+archive/test-rebuild-20110413/+buildjob/2448110/+files/buildlog_ubuntu-natty-amd64.dansguardian_2.10.1.1-3_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 1674 lines into the build log:

g++ -DHAVE_CONFIG_H -I. -I.. -D__CONFFILE='"/etc/dansguardian/dansguardian.conf"' -D__LOGLOCATION='"/var/log/dansguardian/"' -D__PIDDIR='"/var/run"' -D__PROXYUSER='"dansguardian"' -D__PROXYGROUP='"dansguardian"' -D__CONFDIR='"/etc/dansguardian"' -Wall -g -O2 -fno-strict-aliasing -g -O2 -MT dansguardian-ip.o -MD -MP -MF .deps/dansguardian-ip.Tpo -c -o dansguardian-ip.o `test -f 'authplugins/ip.cpp' || echo './'`authplugins/ip.cpp
mv -f .deps/dansguardian-ip.Tpo .deps/dansguardian-ip.Po
g++ -DHAVE_CONFIG_H -I. -I.. -D__CONFFILE='"/etc/dansguardian/dansguardian.conf"' -D__LOGLOCATION='"/var/log/dansguardian/"' -D__PIDDIR='"/var/run"' -D__PROXYUSER='"dansguardian"' -D__PROXYGROUP='"dansguardian"' -D__CONFDIR='"/etc/dansguardian"' -Wall -g -O2 -fno-strict-aliasing -g -O2 -MT dansguardian-ntlm.o -MD -MP -MF .deps/dansguardian-ntlm.Tpo -c -o dansguardian-ntlm.o `test -f 'authplugins/ntlm.cpp' || echo './'`authplugins/ntlm.cpp
authplugins/ntlm.cpp: In member function 'virtual int ntlminstance::identify(Socket&, Socket&, HTTPHeader&, std::string&)':
authplugins/ntlm.cpp:205:87: error: expected primary-expression before ',' token
authplugins/ntlm.cpp:205:89: error: 'payload' was not declared in this scope
authplugins/ntlm.cpp:205:96: error: 'offsetof' was not declared in this scope
make[3]: *** [dansguardian-ntlm.o] Error 1
make[3]: Leaving directory `/build/buildd/dansguardian-2.10.1.1/src'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/build/buildd/dansguardian-2.10.1.1'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/build/buildd/dansguardian-2.10.1.1'
make: *** [build-stamp] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20110422-0040
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/dansguardian-2.10.1.1