From 40d23b0fb35bf7b5bf4b5ba089cb7f38a5cb256e Mon Sep 17 00:00:00 2001
From: Felix Lange <fjl@twurst.com>
Date: Mon, 27 Oct 2025 10:14:44 +0100
Subject: [PATCH] core/types: add comment

---
 core/types/transaction_signing.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/core/types/transaction_signing.go b/core/types/transaction_signing.go
index bcd168cae3..ef8fb194d5 100644
--- a/core/types/transaction_signing.go
+++ b/core/types/transaction_signing.go
@@ -187,6 +187,7 @@ type modernSigner struct {
 	legacy  Signer
 }
 
+// txtypeSet is a bitmap for transaction types.
 type txtypeSet [2]uint64
 
 func (v *txtypeSet) set(txType byte) {