[flang] [llvm] [flang] Allow -fdefault-integer-8 with defined I/O (PR #148927)

[Peter Klausler via llvm-commits]

klausler wrote:

> Thanks for the fix! It fixed the `UNIT`. However, the option `-fdefault-integer-8` seems affect the `v_list` as well as the full test case still fails with an incorrect`v_list`. Should I open a new issue?

No, but please ensure that the original issue demonstrates the problem with `v_list`.

https://github.com/llvm/llvm-project/pull/148927