From 06a96190b437543c603805010aa67cab309508cf Mon Sep 17 00:00:00 2001
From: Sina Mahmoodi <itz.s1na@gmail.com>
Date: Wed, 8 Apr 2026 14:07:23 +0000
Subject: [PATCH] add comment

---
 eth/tracers/native/prestate.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/eth/tracers/native/prestate.go b/eth/tracers/native/prestate.go
index c072bf755f..b3d3bb7b96 100644
--- a/eth/tracers/native/prestate.go
+++ b/eth/tracers/native/prestate.go
@@ -45,6 +45,8 @@ type stateMap = map[common.Address]*account
 
 type account struct {
 	Balance  *big.Int                    `json:"balance,omitempty"`
+	// Pointer so omitempty can omit unchanged code (nil) while still
+	// emitting "0x" when code is cleared (e.g. EIP-7702 deauthorization).
 	Code     *[]byte                     `json:"code,omitempty"`
 	CodeHash *common.Hash                `json:"codeHash,omitempty"`
 	Nonce    uint64                      `json:"nonce,omitempty"`