simcall_comm_isend(mailbox, request->size, -1.0,
buf, request->real_size,
&match_send,
- &xbt_free, // how to free the userdata if a detached send fails
+ &xbt_free_f, // how to free the userdata if a detached send fails
&smpi_comm_copy_buffer_callback,
request,
// detach if msg size < eager/rdv switch limit