https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125354
Steve Kargl <kargl at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |kargl at gcc dot gnu.org
--- Comment #4 from Steve Kargl <kargl at gcc dot gnu.org> ---
(In reply to Paul Thomas from comment #0)
> It crosses my mind that, since coarrays are part of the fortran language
> specification, we should aim to make -fcoarray=shared the default.
>
> PR125113 should IMHO be fixed before implementing this step.
Do all targets have a pthread library? If yes, and GCC can use
it, then sure -fcoarray=shared may make sense. OTOH, what if
there is not shmem library?
In addition, at least with FreeBSD, one needs to add -lpthread
to to command line (or use the -pthread option) if one uses
-fcoarray=shared. The pthread functions do not live in libc.
I submitted a patch to the mailing list a long time ago to
make -fcoarray=single the default. I no longer have the
patch, and neither duck-duck-go nor google search had turned
up the patch.
