#include "mpi.h" int MPI_Errhandler_get( MPI_Comm comm, MPI_Errhandler *errhandler )
All MPI objects (e.g., MPI_Datatype, MPI_Comm) are of type INTEGER in Fortran.
The MPI Standard was unclear on whether this routine required the user to call MPI_Errhandler_free once for each call made to this routine in order to free the error handler. After some debate, the MPI Forum added an explicit statement that users are required to call MPI_Errhandler_free when the return value from this routine is no longer needed. This behavior is similar to the other MPI routines for getting objects; for example, MPI_Comm_group requires that the user call MPI_Group_free when the group returned by MPI_Comm_group is no longer needed.
All MPI routines (except MPI_Wtime and MPI_Wtick) return an error value; C routines as the value of the function and Fortran routines in the last argument. Before the value is returned, the current MPI error handler is called. By default, this error handler aborts the MPI job. The error handler may be changed with MPI_Errhandler_set; the predefined error handler MPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not guarentee that an MPI program can continue past an error.