https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67068
kargl at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |kargl at gcc dot gnu.org --- Comment #1 from kargl at gcc dot gnu.org --- (In reply to Mike Glass from comment #0) > Using gfortran-5.2.0 with openmpi 1.8.7 on a Linux RHEL system. > > When compiling a FORTRAN file with "-freal-4-real-8 -fdefault-double-8 > -fdefault-real-8" What happens if you don't use the options? You did read the document for the -fdefault-* right? Did you compile everything, and I mean everything, with those options?