https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61047
--- Comment #5 from Bernd Edlinger <bernd.edlinger at hotmail dot de> --- I tried a boot-strap with this patch, and there are almost no false positives, except a few varargs functions. Most interesting are these cases: /home/ed/gnu/gcc-build/./prev-gcc/xg++ -B/home/ed/gnu/gcc-build/./prev-gcc/ -B/home/ed/gnu/install/x86_64-unknown-linux-gnu/bin/ -nostdinc++ -B/home/ed/gnu/gcc-build/prev-x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs -B/home/ed/gnu/gcc-build/prev-x86_64-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs -I/home/ed/gnu/gcc-build/prev-x86_64-unknown-linux-gnu/libstdc++-v3/include/x86_64-unknown-linux-gnu -I/home/ed/gnu/gcc-build/prev-x86_64-unknown-linux-gnu/libstdc++-v3/include -I/home/ed/gnu/gcc-trunk/libstdc++-v3/libsupc++ -L/home/ed/gnu/gcc-build/prev-x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs -L/home/ed/gnu/gcc-build/prev-x86_64-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs -c -g -O2 -DIN_GCC -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -fno-common -DHAVE_CONFIG_H -I. -I. -I../../gcc-trunk/gcc -I../../gcc-trunk/gcc/. -I../../gcc-trunk/gcc/../include -I../../gcc-trunk/gcc/../libcpp/include -I/home/ed/gnu/gcc-build/./gmp -I/home/ed/gnu/gcc-trunk/gmp -I/home/ed/gnu/gcc-build/./mpfr -I/home/ed/gnu/gcc-trunk/mpfr -I/home/ed/gnu/gcc-trunk/mpc/src -I../../gcc-trunk/gcc/../libdecnumber -I../../gcc-trunk/gcc/../libdecnumber/bid -I../libdecnumber -I../../gcc-trunk/gcc/../libbacktrace -DCLOOG_INT_GMP -I/home/ed/gnu/gcc-build/./cloog/include -I/home/ed/gnu/gcc-trunk/cloog/include -I../gcc-trunk/cloog/include -I/home/ed/gnu/gcc-build/./isl/include -I/home/ed/gnu/gcc-trunk/isl/include -o expmed.o -MT expmed.o -MMD -MP -MF ./.deps/expmed.TPo ../../gcc-trunk/gcc/expmed.c *** sp can trap: offset=34359738424, size=8, low_bound=-144, high_bound=272 *** sp can trap: offset=34359738456, size=8, low_bound=-144, high_bound=272 -- /home/ed/gnu/gcc-build/./prev-gcc/xg++ -B/home/ed/gnu/gcc-build/./prev-gcc/ -B/home/ed/gnu/install/x86_64-unknown-linux-gnu/bin/ -nostdinc++ -B/home/ed/gnu/gcc-build/prev-x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs -B/home/ed/gnu/gcc-build/prev-x86_64-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs -I/home/ed/gnu/gcc-build/prev-x86_64-unknown-linux-gnu/libstdc++-v3/include/x86_64-unknown-linux-gnu -I/home/ed/gnu/gcc-build/prev-x86_64-unknown-linux-gnu/libstdc++-v3/include -I/home/ed/gnu/gcc-trunk/libstdc++-v3/libsupc++ -L/home/ed/gnu/gcc-build/prev-x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs -L/home/ed/gnu/gcc-build/prev-x86_64-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs -c -g -O2 -DIN_GCC -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -fno-common -DHAVE_CONFIG_H -I. -I. -I../../gcc-trunk/gcc -I../../gcc-trunk/gcc/. -I../../gcc-trunk/gcc/../include -I../../gcc-trunk/gcc/../libcpp/include -I/home/ed/gnu/gcc-build/./gmp -I/home/ed/gnu/gcc-trunk/gmp -I/home/ed/gnu/gcc-build/./mpfr -I/home/ed/gnu/gcc-trunk/mpfr -I/home/ed/gnu/gcc-trunk/mpc/src -I../../gcc-trunk/gcc/../libdecnumber -I../../gcc-trunk/gcc/../libdecnumber/bid -I../libdecnumber -I../../gcc-trunk/gcc/../libbacktrace -DCLOOG_INT_GMP -I/home/ed/gnu/gcc-build/./cloog/include -I/home/ed/gnu/gcc-trunk/cloog/include -I../gcc-trunk/cloog/include -I/home/ed/gnu/gcc-build/./isl/include -I/home/ed/gnu/gcc-trunk/isl/include -o fixed-value.o -MT fixed-value.o -MMD -MP -MF ./.deps/fixed-value.TPo ../../gcc-trunk/gcc/fixed-value.c *** sp can trap: offset=34359738472, size=8, low_bound=-144, high_bound=208 *** sp can trap: offset=34359738488, size=8, low_bound=-144, high_bound=240 /home/ed/gnu/gcc-build/./prev-gcc/xg++ -B/home/ed/gnu/gcc-build/./prev-gcc/ -B/home/ed/gnu/install/x86_64-unknown-linux-gnu/bin/ -nostdinc++ -B/home/ed/gnu/gcc-build/prev-x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs -B/home/ed/gnu/gcc-build/prev-x86_64-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs -I/home/ed/gnu/gcc-build/prev-x86_64-unknown-linux-gnu/libstdc++-v3/include/x86_64-unknown-linux-gnu -I/home/ed/gnu/gcc-build/prev-x86_64-unknown-linux-gnu/libstdc++-v3/include -I/home/ed/gnu/gcc-trunk/libstdc++-v3/libsupc++ -L/home/ed/gnu/gcc-build/prev-x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs -L/home/ed/gnu/gcc-build/prev-x86_64-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs -c -g -O2 -DIN_GCC -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -fno-common -DHAVE_CONFIG_H -I. -I. -I../../gcc-trunk/gcc -I../../gcc-trunk/gcc/. -I../../gcc-trunk/gcc/../include -I../../gcc-trunk/gcc/../libcpp/include -I/home/ed/gnu/gcc-build/./gmp -I/home/ed/gnu/gcc-trunk/gmp -I/home/ed/gnu/gcc-build/./mpfr -I/home/ed/gnu/gcc-trunk/mpfr -I/home/ed/gnu/gcc-trunk/mpc/src -I../../gcc-trunk/gcc/../libdecnumber -I../../gcc-trunk/gcc/../libdecnumber/bid -I../libdecnumber -I../../gcc-trunk/gcc/../libbacktrace -DCLOOG_INT_GMP -I/home/ed/gnu/gcc-build/./cloog/include -I/home/ed/gnu/gcc-trunk/cloog/include -I../gcc-trunk/cloog/include -I/home/ed/gnu/gcc-build/./isl/include -I/home/ed/gnu/gcc-trunk/isl/include -o fold-const.o -MT fold-const.o -MMD -MP -MF ./.deps/fold-const.TPo ../../gcc-trunk/gcc/fold-const.c *** hard_fp can trap: offset=34359738280, size=8, low_bound=-368, high_bound=32 -- they were not happening with the 4.9 branch.
