[llvm] [flang-rt][test] Add regression coverage for child I/O namelist mode (PR #222505)

[Eugene Epshteyn via llvm-commits]

eugeneepshteyn wrote:

@tarunprabhu , need your opinion about placement of these tests. (And actually a test added by https://github.com/llvm/llvm-project/pull/218314 .) On one hand, it's an execution test. On the other hand, it's a good regression test and adding it to llvm-test-suite would mean it won't run as often and wouldn't catch regressions until post-commit. Also, rewriting it to be a runtime GTest would be messy, due to extra harness that needs to be written. Do you think it's ok to place these tests to `flang-rt/test/Driver/` ?

https://github.com/llvm/llvm-project/pull/222505