Reported (and confirmed) here: http://gcc.gnu.org/bugzilla//show_bug.cgi?id=29879
> SVN revision: 118945 > Host: i686-pc-linux-gnu > > /home/daniel/svn-build/gcc-head/./gcc/xgcc > -B/home/daniel/svn-build/gcc-head/./g > cc/ -B/home/daniel/i686-pc-linux-gnu/gcc-svn//i686-pc-linux-gnu/bin/ > -B/home/dan > iel/i686-pc-linux-gnu/gcc-svn//i686-pc-linux-gnu/lib/ -isystem > /home/daniel/i686 > -pc-linux-gnu/gcc-svn//i686-pc-linux-gnu/include -isystem > /home/daniel/i686-pc-l > inux-gnu/gcc-svn//i686-pc-linux-gnu/sys-include -DHAVE_CONFIG_H -I. > -I/home/dani > el/svn/gcc/libgfortran -I. -iquote/home/daniel/svn/gcc/libgfortran/io > -I/home/da > niel/svn/gcc/libgfortran/../gcc > -I/home/daniel/svn/gcc/libgfortran/../gcc/config > -I../.././gcc -D_GNU_SOURCE -std=gnu99 -Wall -Wstrict-prototypes > -Wmissing-prot > otypes -Wold-style-definition -Wextra -Wwrite-strings -ftree-vectorize > -funroll- > loops -O2 -g -O2 -c /home/daniel/svn/gcc/libgfortran/generated/matmul_i4.c > -fPI > C -DPIC -o .libs/matmul_i4.o > /home/daniel/svn/gcc/libgfortran/generated/matmul_i4.c: In > function 'matmul_i4': > /home/daniel/svn/gcc/libgfortran/generated/matmul_i4.c:337: error: > verify_flow_i > nfo: Block 136 has loop_father, but there are no loops > /home/daniel/svn/gcc/libgfortran/generated/matmul_i4.c:337: error: > verify_flow_info: Block 135 has loop_father, but there are no loops > > [snipped 133 identical messages] > > /home/daniel/svn/gcc/libgfortran/generated/matmul_i4.c:337: error: > verify_flow_info: Block 2 has loop_father, but there are no loops > /home/daniel/svn/gcc/libgfortran/generated/matmul_i4.c:337: internal compiler > error: verify_flow_info failed > Please submit a full bug report, > with preprocessed source if appropriate. > See <URL:http://gcc.gnu.org/bugs.html> for instructions. > make[3]: *** [matmul_i4.lo] Error 1 > make[3]: Leaving directory > `/home/daniel/svn-build/gcc-head/i686-pc-linux-gnu/libgfortran' > make[2]: *** [all] Error 2 > make[2]: Leaving directory > `/home/daniel/svn-build/gcc-head/i686-pc-linux-gnu/libgfortran' > make[1]: *** [all-target-libgfortran] Error 2 > make[1]: Leaving directory `/home/daniel/svn-build/gcc-head'