*/
namespace simgrid{
namespace smpi{
-int Coll_allreduce_smp_rsag_lr::allreduce(void *send_buf, void *recv_buf,
+int Coll_allreduce_smp_rsag_lr::allreduce(const void *send_buf, void *recv_buf,
int count, MPI_Datatype dtype,
MPI_Op op, MPI_Comm comm)
{