From 7b26641aa3eb6cfd63f075d029cd4318b3f35a45 Mon Sep 17 00:00:00 2001
From: hulxv <hulxxv@gmail.com>
Date: Fri, 27 Mar 2026 21:54:06 +0200
Subject: [PATCH 1/2] event loop: tolerate unexpected exceptions in `post()`
 callbacks

---
 src/mp/proxy.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/mp/proxy.cpp b/src/mp/proxy.cpp
index da22ae6..166c421 100644
--- a/src/mp/proxy.cpp
+++ b/src/mp/proxy.cpp
@@ -245,7 +245,12 @@ void EventLoop::loop()
         if (read_bytes != 1) throw std::logic_error("EventLoop wait_stream closed unexpectedly");
         Lock lock(m_mutex);
         if (m_post_fn) {
-            Unlock(lock, *m_post_fn);
+            // m_post_fn throwing is never expected. If it does happen, the caller
+            // of EventLoop::post() will return without any indication of failure,
+            // which will likely cause other bugs. Log the error and continue.
+            KJ_IF_MAYBE(exception, kj::runCatchingExceptions([&]() { Unlock(lock, *m_post_fn); })) {
+                MP_LOG(*this, Log::Error) << "EventLoop: m_post_fn threw: " << kj::str(*exception).cStr();
+            }
             m_post_fn = nullptr;
             m_cv.notify_all();
         } else if (done()) {

From 0dfe095015d200d0f1e0dd74bdc478df784bdb09 Mon Sep 17 00:00:00 2001
From: hulxv <hulxxv@gmail.com>
Date: Sat, 4 Apr 2026 01:41:58 +0200
Subject: [PATCH 2/2] missed header

---
 src/mp/proxy.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/mp/proxy.cpp b/src/mp/proxy.cpp
index 166c421..c3ec9b4 100644
--- a/src/mp/proxy.cpp
+++ b/src/mp/proxy.cpp
@@ -22,6 +22,7 @@
 #include <kj/async-prelude.h>
 #include <kj/common.h>
 #include <kj/debug.h>
+#include <kj/exception.h>
 #include <kj/function.h>
 #include <kj/memory.h>
 #include <kj/string.h>