ref.h in argon2-1.1.0

- old
+ new

@@ -24,9 +24,19 @@
  * @pre all block pointers must be valid
  */
 void fill_block_with_xor(const block *prev_block, const block *ref_block,
                 block *next_block);
 
+/* LEGACY CODE: version 1.2.1 and earlier
+* Function fills a new memory block by overwriting @next_block. 
+* @param prev_block Pointer to the previous block
+* @param ref_block Pointer to the reference block
+* @param next_block Pointer to the block to be constructed
+* @pre all block pointers must be valid
+*/
+void fill_block(const block *prev_block, const block *ref_block,
+    block *next_block);
+
 /*
  * Generate pseudo-random values to reference blocks in the segment and puts
  * them into the array
  * @param instance Pointer to the current instance
  * @param position Pointer to the current position