dtrace_class_name
dtrace_class_name(p->dtp_attr.dtat_class));
dtrace_class_name(p->dtp_arga.dtat_class));
dtrace_class_name(dpi.dpi_descattr.dtat_class));
dtrace_class_name(dpi.dpi_stmtattr.dtat_class));
const char *class = dtrace_class_name(attr.dtat_class);
if (strcasecmp(p, dtrace_class_name(c)) == 0) {
extern const char *dtrace_class_name(dtrace_class_t);