Aborts with `MPI_ERR_UNKNOWN` in `fmpi_mpi_abort()`

src/fmpi_mpi.c

@@ -169,7 +169,7 @@ void fmpi_mpi_abort(const struct fmpi_mpi_ctx * const ctx)
 {
     assert(ctx != NULL);
     if(fmpi_mpi_finalized(ctx) == false) {
-        int err_id = MPI_Abort(MPI_COMM_WORLD, 1);
+        int err_id = MPI_Abort(MPI_COMM_WORLD, MPI_ERR_UNKNOWN);
         fmpi_mpi_check_error(ctx, err_id, "MPI_Abort");
     }
 }