From 3328fddb6428173b6fdef60f511b6472514c6160 Mon Sep 17 00:00:00 2001
From: Matthias Seitz <matthias.seitz@outlook.de>
Date: Sat, 4 Nov 2023 07:57:04 +0100
Subject: [PATCH] handle string case

---
 ethers-core/src/utils/genesis.rs | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/ethers-core/src/utils/genesis.rs b/ethers-core/src/utils/genesis.rs
index 02722b5c25..7b6f2c6543 100644
--- a/ethers-core/src/utils/genesis.rs
+++ b/ethers-core/src/utils/genesis.rs
@@ -1,11 +1,11 @@
-use std::collections::HashMap;
+use std::{collections::HashMap, str::FromStr};
 
 use crate::{
     types::{
         serde_helpers::{
             deserialize_stringified_eth_u64, deserialize_stringified_eth_u64_opt,
             deserialize_stringified_numeric, deserialize_stringified_numeric_opt,
-            deserialize_stringified_u64_opt,
+            deserialize_stringified_u64_opt, Numeric,
         },
         Address, Bytes, H256, U256, U64,
     },
@@ -354,12 +354,21 @@ where
     match Option::<serde_json::Value>::deserialize(deserializer)? {
         None => Ok(None),
         Some(val) => {
+            if let Some(num) = val.as_str() {
+                return Numeric::from_str(num)
+                    .map(U256::from)
+                    .map(Some)
+                    .map_err(serde::de::Error::custom);
+            }
+
             if let serde_json::Value::Number(num) = val {
                 // mainnet ttd is serialized as number, which serde is unable to deserialize as
                 // integer
                 if num.as_f64() == Some(5.875e22) {
+                    dbg!("here2");
                     Ok(Some(U256::from(58750000000000000000000u128)))
                 } else {
+                    dbg!("here3");
                     num.as_u64()
                         .map(U256::from)
                         .ok_or_else(|| serde::de::Error::custom("expected a number"))