From b8b6f5d6a3d92bddf608a3667755c457f8799b96 Mon Sep 17 00:00:00 2001
From: "alex.sharov" <AskAlexSharov@gmail.com>
Date: Sat, 28 Aug 2021 14:25:33 +0700
Subject: [PATCH] add state check assert routine

---
 txpool/pool.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/txpool/pool.go b/txpool/pool.go
index 133f7101a..16b7ac001 100644
--- a/txpool/pool.go
+++ b/txpool/pool.go
@@ -772,6 +772,9 @@ func (b *ByNonce) delete(mt *metaTx) {
 	}
 }
 func (b *ByNonce) replaceOrInsert(mt *metaTx) *metaTx {
+	if ASSERT && (mt == nil || mt.Tx == nil || mt.Tx.senderID == 0) {
+		panic("must never happen")
+	}
 	it := b.tree.ReplaceOrInsert(&sortByNonce{mt})
 	if it != nil {
 		return it.(*sortByNonce).metaTx