Add random_init() and testcase.

[vehre]

coverage on master

Summary of changes

Add handling for random_init() for mpi_caf.

Rationale for changes

The api in gfortran has changed and this patch applies this change for OpenCoarrays by implementing random_init and testcases.

Additional info and certifications

This pull request (PR) is a:

• [ ] Bug fix
• [x] Feature addition
• [ ] Other, Please describe:

I certify that

• [x] I certify that:
  • I have reviewed and followed the contributing guidelines
  • I will wait at least 24 hours before self-approving the PR to give another OpenCoarrays developer a chance to review my proposed code
  • I have not introduced errant white space (no trailing white space or white space errors may be introduced)
  • I have added an explanation of what these changes do and why they should be included
  • I have checked to ensure there aren't other open Pull Requests for the same change
  • I have you written new tests for these changes
  • I have successfully tested these changes locally
  • I have commented any non-trivial, non-obvious code changes
  • The commits are logically atomic, self consistent and coherent
  • The commit messages follow best practices
  • Test coverage is maintained or increased after this is merged

Code coverage data

[rouson]

@vehre the GitHub interface on this PR contained a notification that the branch was not up-to-date with main so I clicked the button to update the branch. This relaunched the CI tests, resulting in a failure on building the new unit test. Please take a look at this and fix it if possible.

[vehre]

Sorry, made the beginner's mistake to not add the testcase's source code to the commit. This is fixed now. Because the gfortran side is not yet on master (I am working on it!), the testcase is not run. For this a recent gfortran 12 is needed.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.

[rouson]

@vehre for some reason, the CI check doesn't show that you signed the Contributor License Agreement (CLA) even though surely you did years ago. Could you please try signing it again so that this can be merged? Is it ready to be merged?

[vehre]

Er, well, how do I sign this license again? I see no link that I can click on.

gcc-11 now has the patch for random_init, so this is ready to be merged here in OpenCoarrays, too.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.