pub unsafe extern "C" fn add_replace(
ht: *mut cds_lfht,
hash: c_ulong,
match_: Option<unsafe extern "C" fn(node: *mut cds_lfht_node, key: *const c_void) -> c_int>,
key: *const c_void,
node: *mut cds_lfht_node,
) -> *mut cds_lfht_node