From 51e4b86e6dcb432ee67bc299babe280a212118a3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9=20Bargull?= <andre.bargull@gmail.com>
Date: Wed, 27 Sep 2023 15:23:57 +0200
Subject: [PATCH] [js] Handle dead wrappers

---
 js/src/builtin/Promise.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/js/src/builtin/Promise.cpp b/js/src/builtin/Promise.cpp
index daeb2c3d68..7d4c232f2e 100644
--- a/js/src/builtin/Promise.cpp
+++ b/js/src/builtin/Promise.cpp
@@ -537,8 +537,12 @@ JSObject*
 PromiseObject::resolutionSite()
 {
     auto debugInfo = PromiseDebugInfo::FromPromise(this);
-    if (debugInfo)
-        return debugInfo->resolutionSite();
+    if (debugInfo) {
+        JSObject* site = debugInfo->resolutionSite();
+        if (site && !JS_IsDeadWrapper(site)) {
+            return site;
+        }
+    }
     return nullptr;
 }