Some programs really need "-fdefault-real-8 -fdefault-integer-8", but I get this error on the Macintosh -
[dranta:~/tests] dir% gfortran -fdefault-integer-8 -o d8test2 d8test2.f d8test2.f: In function 'MAIN__': d8test2.f:4: internal compiler error: in gfc_add_modify_expr, at fortran/trans.c:152 Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://gcc.gnu.org/bugs.html> for instructions. [dranta:~/tests] dir% d8test2 tcsh: d8test2: Command not found. [dranta:~/tests] dir% cat d8test2.f program test2 character*8 nfn nfn='output' lrecl=4048 open (2,file=nfn,access='direct',form='unformatted' 1,recl=lrecl,status='unknown') stop end -- Summary: gfortran - internal compiler error with -fdefault- integer-8 Product: gcc Version: 4.0.0 Status: UNCONFIRMED Severity: normal Priority: P2 Component: fortran AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: dir at lanl dot gov CC: gcc-bugs at gcc dot gnu dot org GCC host triplet: powerpc-apple-darwin7.8.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20954