From 525db7b2c5fde2e54393d0c3f9b68eed154c6754 Mon Sep 17 00:00:00 2001
From: levisyin <150114626+levisyin@users.noreply.github.com>
Date: Tue, 21 Nov 2023 16:16:57 +0800
Subject: [PATCH] accounts/abi: context info on unpack-errors (#28529)

adds contextual information to errors returned by unpack
---
 accounts/abi/error.go | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/accounts/abi/error.go b/accounts/abi/error.go
index 218a22f1e4..8e50112ec5 100644
--- a/accounts/abi/error.go
+++ b/accounts/abi/error.go
@@ -18,7 +18,6 @@ package abi
 
 import (
 	"bytes"
-	"errors"
 	"fmt"
 	"strings"
 
@@ -84,10 +83,10 @@ func (e Error) String() string {
 
 func (e *Error) Unpack(data []byte) (interface{}, error) {
 	if len(data) < 4 {
-		return "", errors.New("invalid data for unpacking")
+		return "", fmt.Errorf("insufficient data for unpacking: have %d, want at least 4", len(data))
 	}
 	if !bytes.Equal(data[:4], e.ID[:4]) {
-		return "", errors.New("invalid data for unpacking")
+		return "", fmt.Errorf("invalid identifier, have %#x want %#x", data[:4], e.ID[:4])
 	}
 	return e.Inputs.Unpack(data[4:])
 }