https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81985
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- Along the same line mvbits_2.f90 gives ../../../p_work/libgfortran/intrinsics/mvbits.c:48:30: runtime error: left shift of negative value -1 ../../../p_work/libgfortran/intrinsics/mvbits.c:48:30: runtime error: left shift of negative value -1
