Correct usage of the terms error and return codes in the tools chapter

[schulzm]

Problem

The MPI_T interface doesn't use error codes in the typical MPI sense, but rather return codes that are benign and do not invoke error handler. In some areas the language was unclear about this - this ticket fixes this.

Proposal

Minor changes around error/return codes in the tools chapter.

Changes to the Text

See PR #795

Impact on Implementations

None

Impact on Users

Clarification in the standard

References and Pull Requests

Issue 426
Issue 385

Old PR: https://github.com/mpi-forum/mpi-standard/pull/646

[schulzm]

I made a pass and updated the PR - I think one of the issues was "behaves like MPI error classes" when we just meant it has to fit the range. I tried to fix this - please review

[mahermanns]

I made a pass and updated the PR - I think one of the issues was "behaves like MPI error classes" when we just meant it has to fit the range. I tried to fix this - please review

I agree with your assessment of the original intent. I left some minor comments on the PR.

[mahermanns]

After discussion during the December meeting, we should provide term index entries for return code.

[wesbland]

This passed a first vote on 2023-02-08.

Yes	No	Abstain
27	0	4

[mpiforumbot]

This passed a 2nd vote.

Yes	No	Abstain
30	0	1