Compilation error when openmpi is upgraded to 4.0.0

[abeltre1]

I was able to test it on Openmpi-3.0.0 and it worked fine. However, when I moved my system to 4.0.0 I was hit with an error at this line.

ierr = MPI_Errhandler_set(MPI_COMM_WORLD, MPI_ERRORS_ARE_FATAL);

SOLUTION:

I removed the line from main and everything compiled perfectly. However, as I am not one of the application developers. I would like to know if you can take a look and if removing that line does not trigger other things to fail throughout the different application components.