Guard against invalid tick heights

solana-labs · Feb 6, 2019 · 5181a2a · 5181a2a
1 parent 2d2572d
commit 5181a2a
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/last_id_queue.rs b/src/last_id_queue.rs
@@ -103,7 +103,9 @@ impl LastIdQueue {
         let current_tick_height = self.tick_height;
         let mut total = 0;
         for (tick_height, stake) in ticks_and_stakes.iter() {
-            if ((current_tick_height - tick_height) as usize) < MAX_ENTRY_IDS {
+            if current_tick_height >= *tick_height
+                && ((current_tick_height - tick_height) as usize) < MAX_ENTRY_IDS
+            {
                 total += stake;
                 if total > supermajority_stake {
                     return self.tick_height_to_timestamp(*tick_height);