Print to stderr after flushing stdout

In some case, you can get the error message before the greeting message. Let's flush stdout before writing an error message to avoid confusion when reading the output.

Fixes #413 (closed).

assigned to @pdraper

@pdraper any views on whether this is good or bad practice?

It would seem to make sense and has little consequence as we're aborting. Perhaps it should be used in all the abort() calling macros, for consistency.

added 1 commit

• b1c6062b - Also flush stdout before printing to stderr in the other MPI error and assertion macros.

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All done. Thanks!

changed title from Print stderr after stdout to Print stderr after flushing stdout

changed the description

changed title from Print stderr after flushing stdout to Print to stderr after flushing stdout

I'll accept this. Thanks!

mentioned in commit 3b5b2b56

merged