I just tried to compile Suse Linux package libqt4-4.3.90-20
with the GNU C compiler version 4.4 snapshot 20080307

The compiler said

g++ -c -O2 -g -fmessage-length=0 -D_FORTIFY_SOURCE=2 -fno-exceptions -O2 -Wall -W -DQT_BOOTSTRAPPED -DQT_MOC -DQT_NO_CODECS -DQT_LITE_UNICODE -DQT_NO_LIBRARY -DQT_NO_STL -DQT_NO_COMPRESS -DQT_NO_DATASTREAM -DQT_NO_TEXTSTREAM -DQT_NO_TEXTCODEC -DQT_NO_UNICODETABLES -DQT_NO_THREAD -DQT_NO_REGEXP -DQT_NO_QOBJECT -DQT_NO_SYSTEMLOCALE -DQT_NO_GEOM_VARIANT -DQT_NO_USING_NAMESPACE -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -I../../../mkspecs/linux-g++-64 -I. -I../../corelib/arch/generic -I../../../include -I. -I../../../include/QtCore -I. -I.uic/release-shared -o release-shared/qdir.o ../../corelib/io/qdir.cpp
../../corelib/io/qdir.cpp: In member function 'void QDirPrivate::sortFileList(QFlags<QDir::SortFlag>, QStringList&, QStringList*, QFileInfoList*) const':
../../corelib/io/qdir.cpp:282: internal compiler error: tree check: expected ssa_name, have addr_expr in get_value_range, at tree-vrp.c:469
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Preprocessed source code attached. Flags -O2  -W required