http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56346
--- Comment #5 from John David Anglin <danglin at gcc dot gnu.org> 2013-03-12 14:28:22 UTC --- With patch, build fails with following error: /test/gnu/gcc/objdir1/./prev-gcc/xg++ -B/test/gnu/gcc/objdir1/./prev-gcc/ -B/opt /gnu/gcc/gcc-4.8/hppa2.0w-hp-hpux11.11/bin/ -nostdinc++ -B/test/gnu/gcc/objdir1/ prev-hppa2.0w-hp-hpux11.11/libstdc++-v3/src/.libs -B/test/gnu/gcc/objdir1/prev-h ppa2.0w-hp-hpux11.11/libstdc++-v3/libsupc++/.libs -I/test/gnu/gcc/objdir1/prev-h ppa2.0w-hp-hpux11.11/libstdc++-v3/include/hppa2.0w-hp-hpux11.11 -I/test/gnu/gcc/ objdir1/prev-hppa2.0w-hp-hpux11.11/libstdc++-v3/include -I/test/gnu/gcc/gcc/libs tdc++-v3/libsupc++ -L/test/gnu/gcc/objdir1/prev-hppa2.0w-hp-hpux11.11/libstdc++- v3/src/.libs -L/test/gnu/gcc/objdir1/prev-hppa2.0w-hp-hpux11.11/libstdc++-v3/lib supc++/.libs -c -DIN_GCC_FRONTEND -DIN_GCC_FRONTEND -g -O2 -DIN_GCC -fno-exce ptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-st rings -Wcast-qual -Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -fno-common -DHAVE_CONFIG_H -I. -Icp -I../../gcc/gcc -I../../gcc/gcc/cp -I../../gcc/gcc/../include -I../../gcc/gcc/../libcpp/include -I/opt/gnu/gcc/gmp/include -I../../gcc/gcc/../libdecnumber -I../../gcc/gcc/../libdecnumber/dpd -I../libdecnumber -I../../gcc/gcc/../libbacktrace ../../gcc/gcc/cp/pt.c -o cp/pt.o ../../gcc/gcc/cp/decl.c: In function 'tree_node* register_dtor_fn(tree)': ../../gcc/gcc/cp/decl.c:6864:38: error: 'addr' may be used uninitialized in this function [-Werror=maybe-uninitialized] arg0, arg1, arg2, NULL_TREE); ^ cc1plus: all warnings being treated as errors