This function invokes the error handler assigned to the window
win with the supplied error code errorcode. If the error
handler was successfully called, the process is not aborted, and the
error handler returns, this function returns MPI_SUCCESS.
NOTES
Users should note that the default error handler is
MPI_ERRORS_ARE_FATAL. Thus, calling this function will abort the
window processes if the default error handler has not been changed for
this window.
ERRORS
Almost all MPI routines return an error value; C routines as
the value of the function and Fortran routines in the last argument. C++
functions do not return errors. If the default error handler is set to
MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism
will be used to throw an MPI:Exception object.
See the MPI man page for a full list of MPI error codes.