Buddy has gone too far (2)

src/mem_medium.c

@@ -108,7 +108,11 @@ void efree_medium(Alloc a) {
         if (head == buddy)
         {
             // Remove from List
-            *(void**) previous_head = *(void**) head;
+            printf("Previous: %p\n", previous_head); //DEBUG
+            if (previous_head != NULL)
+                *(void**) previous_head = *(void**) head;
+            else arena.TZL[index] = *(void**) head;
+            printf("Head: %p\n", head); //DEBUG
             // Add new Block
             void* target_head = ((unsigned long)ptr < (unsigned long)buddy) ? ptr : buddy;
             *(void**) target_head = arena.TZL[index + 1];
@@ -116,7 +120,7 @@ void efree_medium(Alloc a) {
             // Recursive Call
             Alloc next = a;
             next.size <<= 1;
-            next.ptr = target_head;
+            next.ptr = (target_head + 16);
             efree_medium(next);
 
             return;