-unsigned string_hash_func(const void *p);
-int string_compare_func(const void *a, const void *b);
+unsigned long string_hash_func(const void *p, const uint8_t hash_key[HASH_KEY_SIZE]) _pure_;
+int string_compare_func(const void *a, const void *b) _pure_;
+
+/* This will compare the passed pointers directly, and will not
+ * dereference them. This is hence not useful for strings or
+ * suchlike. */
+unsigned long trivial_hash_func(const void *p, const uint8_t hash_key[HASH_KEY_SIZE]) _pure_;
+int trivial_compare_func(const void *a, const void *b) _const_;