From adaa3bb2ff27460b11c067d156b56c4c1f1507ef Mon Sep 17 00:00:00 2001
From: "alex.sharov" <AskAlexSharov@gmail.com>
Date: Sat, 28 Aug 2021 15:02:02 +0700
Subject: [PATCH] add state check assert routine

---
 txpool/pool.go | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/txpool/pool.go b/txpool/pool.go
index 59c2b3bcc..7b7640655 100644
--- a/txpool/pool.go
+++ b/txpool/pool.go
@@ -1782,7 +1782,7 @@ func BroadcastLoop(ctx context.Context, db kv.RwDB, coreDB kv.RoDB, p *TxPool, s
 	if ASSERT {
 		go func() {
 			if err := p.forceCheckState(ctx, db, coreDB); err != nil {
-				log.Error("restore from db", "err", err)
+				log.Error("forceCheckState", "err", err)
 			}
 		}()
 	}
@@ -1866,6 +1866,12 @@ func (p *TxPool) forceCheckState(ctx context.Context, db, coreDB kv.RoDB) error
 					if err != nil {
 						return err
 					}
+					if v2 == nil {
+						// for now skip this case because we do create
+						// account with 0 nonce and 0 balance for unknown senders (because
+						// they may become known in near future)
+						return nil
+					}
 					if !bytes.Equal(v, v2) {
 						return fmt.Errorf("state check failed: key=%x, local value=%x, remote value=%x\n", k, v, v2)
 					}