ctf_diff_types
err = ctf_diff_types(cdp, ctfdiff_cb, NULL);
if ((ret = ctf_diff_types(cds, ctf_diff_void_cb, NULL)) != 0)
if ((ret = ctf_diff_types(cds, ctf_diff_void_cb, NULL)) != 0)
ret = ctf_diff_types(cdp, ctf_merge_diffcb, &cm);
ret = ctf_diff_types(cdp, ctf_merge_diffcb, &cm);
extern int ctf_diff_types(ctf_diff_t *, ctf_diff_type_f, void *);