pub unsafe extern "C" fn ddsrt_avl_clookup_succ(
td: *const ddsrt_avl_ctreedef_t,
tree: *const ddsrt_avl_ctree_t,
key: *const c_void,
) -> *mut c_void
pub unsafe extern "C" fn ddsrt_avl_clookup_succ(
td: *const ddsrt_avl_ctreedef_t,
tree: *const ddsrt_avl_ctree_t,
key: *const c_void,
) -> *mut c_void