[Patch, Fortran] gfc_notify_std cleanup
Tobias Burnus
burnus@net-b.de
Tue Jul 17 19:40:00 GMT 2012
Mikael Morin wrote:
> On 17/07/2012 12:03, Tobias Burnus wrote:
>> On 07/17/2012 11:42 AM, Janus Weil wrote:
>>> + case GFC_STD_F2008_TS:
>>> + strcat (buffer, " TS 29113:");
>>> + break;
>> That's currently correct. However, there is another post-Fortran 2008
>> Technical Specification in preparation. (Coarray extensions.)* How
>> should be handled? "TS 29113 or TS 12345:"?
>>
> Future extension:?
> To be standardized feature:?
> Bleeding edge stuff:?
Well, those names are nice – until we have Fortran 2015 and Fortran 2020.
> Fortran 2015:?
>
> If they are both in the next standard revision, they have to be under
> the same flag anyway.
Well, they will be in the next standard, however, the goal is to be able
to compile with a -std= flag, which does not include compiler extensions
but those features. I have met a couple of users, who just wanted to
have Fortran 95 + allocatable components/dummy arguments (TR 15581:2001)
and not any Fortran 2003 feature. However, as gfortran doesn't have a
suitable -std=, they had to use -std=f2003.
Okay, for Fortran 2015, that is probably not a problem as it seems as if
only few features will be added. There is not much time according to the
schedule [1], only until mid-2015 – and a lot of time will be spend on
the coarray TS (due: mid-2013). Additionally, there seems to be the
feeling in the committee that one shouldn't move forward too quickly,
given that finding a Fortran 2003 compiler is difficult and having no
compiler with full Fortran 2008. [2]
In that sense, one could rename -std=f2008ts into -std=f2015 and have
the "f2015ts" as alias. But otherwise, Fortran 2008 plus TS and Fortran
2015 are different beasts.
Tobias
[1] ftp://ftp.nag.co.uk/sc22wg5/N1901-N1950/N1925.txt
[2] Especially the UK's position is along those lines
ftp://ftp.nag.co.uk/sc22wg5/N1901-N1950/N1923.pdf
More information about the Gcc-patches
mailing list