From ceaf76e021446dc0bc719230ab44f248582b49fb Mon Sep 17 00:00:00 2001
From: Rongjian Lan <rongjian.lan@gmail.com>
Date: Thu, 5 Nov 2020 14:42:44 -0800
Subject: [PATCH] prevent nil pointer crash

---
 consensus/quorum/one-node-staked-vote.go | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/consensus/quorum/one-node-staked-vote.go b/consensus/quorum/one-node-staked-vote.go
index f0099f968..e18b99f99 100644
--- a/consensus/quorum/one-node-staked-vote.go
+++ b/consensus/quorum/one-node-staked-vote.go
@@ -173,9 +173,11 @@ func (v *stakedVoteWeight) computeTotalPowerByMask(mask *bls_cosi.Mask) *numeric
 
 	for key, i := range mask.PublicsIndex {
 		if enabled, err := mask.IndexEnabled(i); err == nil && enabled {
-			currentTotal = currentTotal.Add(
-				v.roster.Voters[key].OverallPercent,
-			)
+			if voter, ok := v.roster.Voters[key]; ok {
+				currentTotal = currentTotal.Add(
+					voter.OverallPercent,
+				)
+			}
 		}
 	}
 	return &currentTotal