https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88080
kargl at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P3 |P5 Severity|normal |enhancement --- Comment #1 from kargl at gcc dot gnu.org --- (In reply to Vivek Rao from comment #0) > I think new Fortran code should have IMPLICIT NONE in every procedure or > preferably at the beginning of a program or MODULE. I request that gfortran > add an option that warns when this is not the case. Users who want IMPLICIT > NONE in all code can convert such a warning to an error. > > This is, of course, an enhancement request and not a bug report. How does gfortran differentiate between new Fortran code and old Fortran code? I think it is the programmer's responsibility to learn how to use the tools given to them to his/hers advantage.