XBT_PUBLIC_DATA MSG_Global_t msg_global;
/*************************************************************/
-XBT_PRIVATE void MSG_comm_copy_data_from_SIMIX(smx_activity_t comm, void* buff, size_t buff_size);
+XBT_PRIVATE void MSG_comm_copy_data_from_SIMIX(simgrid::kernel::activity::CommImpl* comm, void* buff, size_t buff_size);
/********** Tracing **********/
/* declaration of instrumentation functions from msg_task_instr.c */