[patch, PR 19303] Provide 4-and 8-byte record markers for fortran

[Tobias Schlüter]

Quoting Janis Johnson <janis187@us.ibm.com>:
> > I wondered whether we could somehow tag some of the testcases of the
> > gfortran testsuite (all those related to unformatted I/O) with a dg
> > directive so that they're run twice: with -frecord-marker=4 and with
> > -frecord-marker=8.
>
> That could be done by moving those tests to a new directory that has its
> own .exp file to run them with multiple options.

Steven, in the past you said that you were working on building a libgfortran
testsuite.  Maybe this work could be beneficial here.

- Tobi