https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61779
--- Comment #12 from Vittorio Zecca <zeccav at gmail dot com> --- Yes, you did say it will be fixed in 4.9.2. Sorry. I did: export CFLAGS="-ggdb -Og" export CXXFLAGS=$CFLAGS ../gcc-4.9.1/configure --prefix=/home/vitti/local/gcc-4.9.1 --disable-lto --with-tune=k8 --enable-languages=c,c++,fortran I compiled manually divtf3.c without -Og.