Description of problem: 
 
I edited qt.spec to remove the following lines (to force use of g++): 
 
 pushd mkspecs 
 for i in *-g++ qws/*-g++; do 
    [ -d $i ] || continue 
    TARGET=`echo $i |sed -e 's,g++$,gcc,'` 
    cp -aR $i $TARGET 
    perl -pi -e "s,g\+\+,gcc,g;s,^(QMAKE_LIBS[[:space:]]*=.*),\1 -lsupc++,g" $TARGET/* 
 done 
 popd 
 perl -pi -e 's,^(.*linux.*)-g\+\+(.*),\1-gcc\2,' configure 
 perl -pi -e 's,^(.*CXX.*LFLAGS.*),\1 -lsupc++,' qmake/GNUmakefile.in 
 
Then, run rpmbuild -bb qt.spec 
Build crashes before completion. 
 
Version-Release number of selected component (if applicable): 
qt-3.1.1-4.src.rpm 
     
Actual results: 
[end of build log:] 
 
g++ -c -pipe -fno-exceptions -O2 -march=i386 -mcpu=i686 -DGLX_GLXEXT_LEGACY 
-fno-use-cxa-atexit -fno-exceptions  -DQT_MOC -DQT_NO_CODECS -DQT_LITE_UNICODE 
-DQT_NO_COMPONENT -DQT_NO_STL -DQT_NO_COMPRESS 
-I/share/src/redhat/BUILD/qt-x11-free-3.1.1/mkspecs/linux-g++ -I. -I/usr/include/freetype2 
-I../../include -I../tools -I. -o ./qfileinfo_unix.o ../tools/qfileinfo_unix.cpp 
yacc -d moc.y 
rm -f moc_yacc.cpp moc_yacc.h 
mv -f y.tab.h moc_yacc.h 
mv -f y.tab.c moc_yacc.cpp 
g++ -c -pipe -fno-exceptions -O2 -march=i386 -mcpu=i686 -DGLX_GLXEXT_LEGACY 
-fno-use-cxa-atexit -fno-exceptions  -DQT_MOC -DQT_NO_CODECS -DQT_LITE_UNICODE 
-DQT_NO_COMPONENT -DQT_NO_STL -DQT_NO_COMPRESS 
-I/share/src/redhat/BUILD/qt-x11-free-3.1.1/mkspecs/linux-g++ -I. -I/usr/include/freetype2 
-I../../include -I../tools -I. -o ./moc_yacc.o moc_yacc.cpp 
../../include/qdict.h: In member function `uint QDict<type>::count() const 
   [with type = char]': 
../../include/qvaluelist.h:272:   instantiated from here 
../../include/qdict.h:60: internal error: Illegal instruction 
Please submit a full bug report, 
with preprocessed source if appropriate. 
See <URL:http://bugzilla.redhat.com/bugzilla/> for instructions. 
make[1]: *** [moc_yacc.o] Error 1 
make[1]: Leaving directory `/share/src/redhat/BUILD/qt-x11-free-3.1.1/src/moc' 
make: *** [src-moc] Error 2 
error: Bad exit status from /var/tmp/rpm-tmp.99234 (%build)