From 2ada767e7654440f86d6a96d6afb24c22d0002f7 Mon Sep 17 00:00:00 2001
From: spilin <LyoshaKR@gmail.com>
Date: Mon, 24 Jan 2022 16:19:58 +0200
Subject: [PATCH] Avoid BUFFER_OVERRUN for unsupported revert reason #165
 (#171)

---
 lib/utils.js | 8 ++++++--
 src/utils.ts | 7 +++++--
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/lib/utils.js b/lib/utils.js
index a62abc32..68edb30b 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -44,8 +44,12 @@ export function parseEVMRevertReason(reason) {
     if (reason.length > 0) {
         // only for valid decoded revert reason
         const coder = new ethers.utils.AbiCoder();
-        const result = coder.decode(['string'], reason.slice(4));
-        return result.toString();
+        try {
+            return coder.decode(['string'], reason.slice(4)).toString();
+        }
+        catch {
+            return reason;
+        }
     }
     return reason;
 }
diff --git a/src/utils.ts b/src/utils.ts
index 9a359cab..22610f83 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -79,8 +79,11 @@ export function parseEVMRevertReason(reason: Uint8Array): string | Uint8Array {
   if (reason.length > 0) {
     // only for valid decoded revert reason
     const coder = new ethers.utils.AbiCoder();
-    const result = coder.decode(['string'], reason.slice(4));
-    return result.toString();
+    try {
+      return coder.decode(['string'], reason.slice(4)).toString();
+    } catch {
+      return reason;
+    }
   }
   return reason;
 }