https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84382
kargl at gcc dot gnu.org changed:
What |Removed |Added
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CC| |kargl at gcc dot gnu.org
--- Comment #3 from kargl at gcc dot gnu.org ---
(In reply to janus from comment #2)
> (In reply to Dominique d'Humieres from comment #1)
> > Fortran is not C!
>
> True. Fortran is not C is not C++. The main difference wrt this PR is
> possibly that the latter two have a large enough user base, so that a
> significant amount of people actually use the options mentioned above.
>
How do you propose to enforce a certain standard and allow
GNU extensions? For example, -std=gnu2003 would enforce
Fortran 2003, but allow GNU extensions. The problem is that
gfortran allows several extensions that violate the
standard. A simple example is
program foo
integer :: i = z'1234'
print *, i
end program foo
% gfcx -o z a.f90 && ./z
4660
% gfcx -o z -std=f2003 a.f90 && ./z
a.f90:2:18:
2 | integer :: i = z'1234'
| 1
Error: GNU Extension: BOZ literal at (1) outside a DATA statement
and outside INT/REAL/DBLE/CMPLX
gfortran even allows extensions that aren't caught by the -std
options and are not document!
program foo
integer :: i = 42
print '(i0)', i + z'1234'
end program foo
%gfcx -o z a.f90 && ./z
4702
% gfcx -o z -std=f2003 a.f90 && ./z
4702
I think it will becomes a endless discussion on what should
and should not be covered under -std=gnu2003. What we have
now seems to be the most reasonable approach (with the
available man power to address problem). Either a user
wants GNU Fortran (ie., -std=gnu, the default behavior) or
a user wants a stricter adherence to a particular standard.
(For the record, I plan to remove both of the above extensions in 10.0).
> > WTF?
>
> Giving that questions back to you, Dominique: WTF? Which problem do you
> think you solve by closing PRs that have not been fixed?
Yeah, I saw Dominique's comment #1, and thought that it might
be a tad bit over-the-top given the quality and quantity of
your contributions to gfortran.
