Re: [patch, Fortran] Change -std=f2008tr to f2008ts, update *.texi status and TR29113->TS29113

[Paul Richard Thomas <paul dot richard dot thomas at gmail dot com>]

Dear Tobias,

I think that this is sufficiently "obvious" that you could have taken
silence to be approval :-)

Of course it's OK for trunk.

Cheers

Paul

On Fri, Oct 14, 2011 at 11:15 PM, Tobias Burnus <burnus@net-b.de> wrote:
> *ping*
>
> http://gcc.gnu.org/ml/fortran/2011-10/msg00073.html
>
> On 12.10.2011 15:57, Tobias Burnus wrote:
>>
>> Hello all,
>>
>> this patch does two things:
>> a) It updates the Fortran 2003 and TR/TS 29113 status in the GNU Fortran
>> manual.
>> b) It changes all references to Technical Report 29113 to Technical
>> Specification 29113
>> c) It changes -std=f2008tr to -std=f2008ts
>>
>> (a) is obvious.
>>
>> Regarding (b): For some reason, ISO's SC22 thinks that one should not use
>> Technical Reports (TR) but a Technical Specification (TS) for the Further
>> //Interoperability of Fortran with C document - and later also for the
>> coarray extensions. Glancing at the documentation, I think they are right
>> that a TS is better; there are procedural differences, but for us the main
>> difference is the name. As the final word is TS, I think gfortran should use
>> TS and not TR throughout for the post-F2008 technical documents.
>>
>> Cf. ftp://ftp.nag.co.uk/sc22wg5/N1851-N1900/N1879.txt : "JTC 1/SC 22
>> instructs the JTC 1/SC 22/WG 5 Convenor to submit future drafts of TR 29113,
>> Further Interoperability of Fortran with C as Technical Specifications"
>>
>> For the difference between TS and TR, see also
>> http://www.iso.org/iso/standards_development/processes_and_procedures/deliverables.htm;
>> for the different approval scheme also the following flow chart (clickable):
>> http://www.iso.org/iso/standards_development/it_tools/flowchart_main.htm
>>
>>
>> Regarding (c): If we switch to TS everywhere, I think it makes sense to
>> also call the flag -std=f2008ts; the flag stands for: Follow the standard
>> according to Fortran 2008 with the extensions defined in the post-F2008
>> (pre-F2013) standard. Namely, TS 29113 on further interoperability of
>> Fortran with C and the coarray TS, which is in a rather early stage. (TS
>> 29113 is already past a PDTS voting and a DTS should be submitted until June
>> 2012.
>>
>> Given that -std=f2008tr was never included in a released GCC version and
>> given that it currently only allows very few features, I think no one
>> actually uses it. Hence, I decided that one can simply change it without
>> taking care of still accepting the f2008tr version.
>>
>> (Currently supported TS 29113 features: OPTIONAL with BIND(C) - absent
>> arguments are indicated as NULL pointer, matching the internal
>> implementation. RANK() intrinsic - which is boring without assumed-rank
>> arrays. ASYNCHRONOUS - well, only the semantic has changed a bit since
>> F2003/GCC 4.6; however, GCC's middle end uses by default ASYNCHRONOUS
>> semantic; turning it off is a missed-optimization bug.)
>>
>> The patch was build and regtested on x86-64-linux.
>> OK for the trunk?
>>
>> Tobias
>>
>> PS: I will also update the release notes after the patch has been
>> committed.
>
>



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