Use _addressof

Author: fsimonis

cyprecice/cyprecice.pyx

@@ -9,8 +9,6 @@ cimport cyprecice
 cimport numpy
 import numpy as np
 from mpi4py import MPI
-from mpi4py cimport MPI
-from mpi4py cimport libmpi
 
 import warnings
 from libcpp.string cimport string
@@ -85,10 +83,10 @@ cdef class Participant:
         pass
 
     def __cinit__ (self, solver_name, configuration_file_name, solver_process_index, solver_process_size, communicator=None):
-        cdef libmpi.MPI_Comm c_comm
+        cdef size_t c_comm_addr;
         if communicator:
-            c_comm = (<MPI.Comm?>communicator).ob_mpi
-            self.thisptr = new CppParticipant.Participant (convert(solver_name), convert(configuration_file_name), solver_process_index, solver_process_size, <void*>&c_comm)
+            c_comm_addr = MPI._addressof(communicator)
+            self.thisptr = new CppParticipant.Participant (convert(solver_name), convert(configuration_file_name), solver_process_index, solver_process_size, <void*>&c_comm_addr)
         else:
             self.thisptr = new CppParticipant.Participant (convert(solver_name), convert(configuration_file_name), solver_process_index, solver_process_size)
         pass