https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67118
Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Component|fortran |middle-end --- Comment #1 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> --- This definitely seems to indicate something going very wrong with your compilation or your system libraries. I'd recommend updating your GMP/MPFR/MPC libraries to latest versions, and rebuilding with those. If it still fails, debug the compiler (f951 or cc1 or cc1plus) and get a full backtrace from gdb.