[flang] added write-after-endfile testcase

[blazie2004]

This test verifies that Fortran I/O statements correctly handle error conditions when ERR= and IOSTAT= specifiers are present. Per Fortran standard 12.11.2, when an error occurs during I/O and either ERR= or IOSTAT= is specified.

PR: 191633

[tarunprabhu]

@kwyatt-ext,

Is this test being added to the correct subdirectory of the cray tests?

[kwyatt-ext]

I will review this. I'm contacting the author about the related PR first.

[kwyatt-ext]

Hi @blazie2004. I have a couple of general recommendations:

• Please don't force-push successive commits to a PR. It erases the history. If a reviewer can't see the diff between their comments and your current push, they end up reviewing the whole change each time. The extra commit history will be compressed into one entry when the change is squashed and merged.

• Please hit the "Re-request Review", button when you are ready for the reviewer to look again. I assume you are ready since you did a force-push, but am not sure if you intended to hand it back at this point.

Thank you.

[tarunprabhu]

@blazie2004, Please see LLVM's developer guide on pull requests - in particular, the sections on updating and rebasing PR's.

[kwyatt-ext]

After you remove the extra file, this should be ready to go, with the following exceptions:

• It still will NOT pass with the draft PR code changes.
• It can not be merged until the associated fix has been merged.

[kwyatt-ext]

You need to delete write-after-endfile.f90 from your commit.

[eugeneepshteyn]

The test fails?

[kwyatt-ext]

Eugene is right. This expected output is not correct. If your test is successful in branching to the error label for the last 2 cases, then your "k" value should be "66" for both and the final should be PASS.