[petsc-dev] GCC8 Fortran length changes from int to size_t

[Jed Brown]

Matthew Knepley <knepley at gmail.com> writes:

> On Wed, May 2, 2018 at 12:15 PM, Jed Brown <jed at jedbrown.org> wrote:
>
>> Lisandro Dalcin <dalcinl at gmail.com> writes:
>>
>> > On Wed, 2 May 2018 at 17:29, Satish Balay <balay at mcs.anl.gov> wrote:
>> >
>> >> So we need a 64bit arm with gcc8 - for this testcase failure?
>> >
>> >
>> > Or a big-endian machine/OS ?
>>
>> Shouldn't be necessary, but why are we so concerned about making a test
>> case fail instead of implementing correct behavior?
>>
>
> How would you know your fix was correct?

Documentation and/or reading assembly.  I don't have gfortran-8
installed yet, but Satish says he does so I offered a tiny snippet that
can be used to confirm that the documentation isn't lying.  If you
really care to make code crash, we can do that too (as I described).