[Bug fortran/125584] gfortran.dg/corray tests may use excessive space in /tmp

[ro at CeBiTec dot Uni-Bielefeld.DE]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125584

--- Comment #15 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #14 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
> (In reply to ro@CeBiTec.Uni-Bielefeld.DE from comment #13)
>> > --- Comment #12 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
>> > (In reply to Rainer Orth from comment #11)
>> >> Patch posted.  Unfortunately, the question about the current
>> >> GFORTRAN_SHARED_MEMORY_SIZE
>> >> defaults is still unanswered.
>> >
>> > I have not found what patch posted where?
>> 
>> It's linked to the PR.  I just noticed that I forgot to also post it to
>> the fortran list.
>
> Oh I was looking for an email or an attachement. I found it. That patch looks
> perfectly fine. I suppose the environment variable needs some documentation. If
> it is only used in Testsuite runs, then no need.

Thanks.  GCC_TEST_RUN_EXPENSIVE is common practice, already documented
in sourcebuild.texi.