From 7fa7a7feca534a87afb85272e5cc9d0275f9266a Mon Sep 17 00:00:00 2001
From: Michael Hart <mhart@cloudflare.com>
Date: Mon, 20 Oct 2025 21:53:18 +1100
Subject: [PATCH] Reset uncaught exception handling after startup execution

Fixes #5332
---
 src/workerd/io/worker.c++ | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/workerd/io/worker.c++ b/src/workerd/io/worker.c++
index 5519855b5b1..521c254ea2d 100644
--- a/src/workerd/io/worker.c++
+++ b/src/workerd/io/worker.c++
@@ -1832,6 +1832,12 @@ Worker::Worker(kj::Own<const Script> scriptParam,
               impl->permanentException);
         }
       });
+
+      // Reset this back to its default after startup execution
+      // Leaving it on comes at the expense of collecting stack traces for all thrown exceptions
+      if (script->isolate->impl->inspector == kj::none) {
+        lock.v8Isolate->SetCaptureStackTraceForUncaughtExceptions(false);
+      }
     });
   });
 }