From b072b0551599fd0c2a150c7c7b3b8263214d9cc3 Mon Sep 17 00:00:00 2001
From: Matthias Seitz <matthias.seitz@outlook.de>
Date: Sun, 24 Oct 2021 16:02:06 +0200
Subject: [PATCH] fix: use debug fmt for nested arrays (#527)

---
 ethers-contract/ethers-contract-derive/src/display.rs | 2 +-
 ethers-contract/tests/common/derive.rs                | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/ethers-contract/ethers-contract-derive/src/display.rs b/ethers-contract/ethers-contract-derive/src/display.rs
index 9576de19..a31a62f0 100644
--- a/ethers-contract/ethers-contract-derive/src/display.rs
+++ b/ethers-contract/ethers-contract-derive/src/display.rs
@@ -78,7 +78,7 @@ pub(crate) fn derive_eth_display_impl(input: DeriveInput) -> Result<TokenStream,
                         quote! {
                            write!(f, "[")?;
                            for (idx, val) in self.#ident.iter().enumerate() {
-                               write!(f, "{}", val)?;
+                               write!(f, "{:?}", val)?;
                                if idx < self.#ident.len() - 1 {
                                    write!(f, ", ")?;
                                }
diff --git a/ethers-contract/tests/common/derive.rs b/ethers-contract/tests/common/derive.rs
index 19aecfc3..f483d8db 100644
--- a/ethers-contract/tests/common/derive.rs
+++ b/ethers-contract/tests/common/derive.rs
@@ -441,6 +441,8 @@ fn can_derive_ethcall() {
         i: I256,
         arr_u8: [u8; 32],
         arr_u16: [u16; 32],
+        nested_arr: [[u8; 32]; 2],
+        double_nested: [[[u8; 32]; 2]; 3],
         v: Vec<u8>,
     }