linpsk version 1.1-1 failed to build on amd64 with GCC-4.6/oneiric

linpsk version 1.1-1 failed to build on amd64 with GCC-4.6/oneiric
Link to failed build: https://launchpad.net/ubuntu/+archive/test-rebuild-20110413/+buildjob/2460974

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/2460974/+files/buildlog_ubuntu-natty-amd64.linpsk_1.1-1_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 641 lines into the build log:

cd src/ && /usr/bin/qmake-qt4 /build/buildd/linpsk-1.1/src/src.pro PREFIX=/usr -o Makefile
WARNING: /build/buildd/linpsk-1.1/src/src.pro:114: Variable TARGETDEPS is deprecated; use POST_TARGETDEPS instead.
cd src/ && /usr/bin/make -f Makefile
make[2]: Entering directory `/build/buildd/linpsk-1.1/builddir/src'
g++ -c -pipe -O2 -O2 -D_REENTRANT -Wall -W -DDATADIR=\"/usr/share\" -DPKGDATADIR=\"\" -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/share/qt4/mkspecs/linux-g++ -I../../src -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtNetwork -I/usr/include/qt4/QtGui -I/usr/include/qt4 -I../../gui -I../gui -I. -I../../src -I. -o linpsk.o ../../src/linpsk.cpp
../../src/linpsk.cpp: In member function 'virtual void LinPSK::addRxWindow()':
../../src/linpsk.cpp:345:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
../../src/linpsk.cpp: In member function 'void LinPSK::setRxMode()':
../../src/linpsk.cpp:693:67: error: taking address of temporary [-fpermissive]
make[2]: *** [linpsk.o] Error 1
make[2]: Leaving directory `/build/buildd/linpsk-1.1/builddir/src'
make[1]: *** [sub-src-make_default-ordered] Error 2
make[1]: Leaving directory `/build/buildd/linpsk-1.1/builddir'
make: *** [build-stamp] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20110424-1119
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/linpsk-1.1