/** compare uncompressed, noncanonical, registers are hints for speed */
int
-query_dname_compare(register uint8_t* d1, register uint8_t* d2)
+query_dname_compare(const register uint8_t* d1, const register uint8_t* d2)
{
register uint8_t lab1, lab2;
log_assert(d1 && d2);
* @return: -1, 0, or +1 depending on comparison results.
* Sort order is first difference found. not the canonical ordering.
*/
-int query_dname_compare(uint8_t* d1, uint8_t* d2);
+int query_dname_compare(const uint8_t* d1, const uint8_t* d2);
/**
* Determine correct, compressed, dname present in packet.