https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84594
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- > > (1) AFAICT this not documented. Is NUMERIC_STORAGE_SIZE the only parameter > > in > > ISO_FORTRAN_ENV triggering a warning? > > Don't know. But, it is obviously a correct warning > as -fdefault-integer-8 applies to only the default > integer kind while NUMERIC_STORAGE_SIZE applies to > all numeric types. > > > (2) The warning is not emitted with -fdefault-real-10 nor with > > -fdefault-real-16. I guess this was overlooked when these options were > > added. > > > > (3) The options -finteger-4-integer-8 and -freal-*-real-* don't trigger the > > warning. Is it because they change all the occurrences of INT or REAL, while > > -fdefault-* only change the implicit ones? > AFAIK, Yes. INTEGER(4) is known to the compiler with -finteger-4-integer-8, > the user simply cannot use it as internally gfortran map everything > to INTEGER(8) as-if the user actually ported the code. In other words, > storage association isn't broken by these options. Do you at least agree that (a) || flag_default_real_10 || flag_default_real_16 should be added to flag_default_integer || flag_default_real_8 in module.c, (b) the warning should be documented?
