From 210d864aa2c1b5921a14fa2a938ec260b971c053 Mon Sep 17 00:00:00 2001
From: Dylan Conway <dylan.conway567@gmail.com>
Date: Tue, 9 Jul 2024 19:31:25 -0700
Subject: [PATCH] errors

---
 src/bun.js/bindings/webcore/SerializedScriptValue.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/bun.js/bindings/webcore/SerializedScriptValue.cpp b/src/bun.js/bindings/webcore/SerializedScriptValue.cpp
index 2f71b3af075aad..4510a195905283 100644
--- a/src/bun.js/bindings/webcore/SerializedScriptValue.cpp
+++ b/src/bun.js/bindings/webcore/SerializedScriptValue.cpp
@@ -2574,6 +2574,8 @@ SerializationReturnCode CloneSerializer::serialize(JSValue in)
             if (!startMap(inMap))
                 break;
             JSMapIterator* iterator = JSMapIterator::create(m_lexicalGlobalObject, m_lexicalGlobalObject->mapIteratorStructure(), inMap, IterationKind::Entries);
+            if (UNLIKELY(scope.exception()))
+                return SerializationReturnCode::ExistingExceptionError;
             m_gcBuffer.appendWithCrashOnOverflow(inMap);
             m_gcBuffer.appendWithCrashOnOverflow(iterator);
             mapIteratorStack.append(iterator);
@@ -2620,6 +2622,8 @@ SerializationReturnCode CloneSerializer::serialize(JSValue in)
             if (!startSet(inSet))
                 break;
             JSSetIterator* iterator = JSSetIterator::create(m_lexicalGlobalObject, m_lexicalGlobalObject->setIteratorStructure(), inSet, IterationKind::Keys);
+            if (UNLIKELY(scope.exception()))
+                return SerializationReturnCode::ExistingExceptionError;
             m_gcBuffer.appendWithCrashOnOverflow(inSet);
             m_gcBuffer.appendWithCrashOnOverflow(iterator);
             setIteratorStack.append(iterator);