fixed panic: runtime error: integer divide by zero prysmaticlabs#4777

aranhaagency · Feb 10, 2020 · 483cbff · 483cbff
1 parent 02b6d77
commit 483cbff
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/beacon-chain/sync/pending_attestations_queue.go b/beacon-chain/sync/pending_attestations_queue.go
@@ -99,7 +99,9 @@ func (s *Service) processPendingAtts(ctx context.Context) error {
 
 			// Start with a random peer to query, but choose the first peer in our unsorted list that claims to
 			// have a head slot newer or equal to the pending attestation's target boundary slot.
-			pid := pids[rand.Int()%len(pids)]
+			if pid := pids[rand.Int()%len(pids)]; pid != 0; {
+				pid := pids[rand.Int()%len(pids)]
+			}
 			targetSlot := helpers.SlotToEpoch(attestations[0].Aggregate.Data.Target.Epoch)
 			for _, p := range pids {
 				if cs, _ := s.p2p.Peers().ChainState(p); cs != nil && cs.HeadSlot >= targetSlot {