[Bug fortran/25829] [F2003] Asynchronous IO support

[burnus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25829

--- Comment #23 from Tobias Burnus <burnus at gcc dot gnu.org> 2011-07-13 13:15:39 UTC ---
(In reply to comment #22)
> I think the easiest is to not set the "restrict" of dummy arguments involved in
> ASYNCHRONOUS I/O.

It seems that GCC understands something different than I by "restrict"; it
seems to be much less aggressive than I thought - and seems to match exactly
what we need, such that no action seems to be required.

Cf. http://gcc.gnu.org/ml/gcc/2011-07/msg00208.html and see PR 49733 for a
missed-optimization PR, which is for adding an variable attribute which does
optimize across function calls - which is allowed most of the time in Fortran
(except for ASYNCHRONOUS and for coarrays).