From 1f7d50a9b9140d02f6a9afb97734eb9761b6a0d4 Mon Sep 17 00:00:00 2001
From: camila314 <47485054+camila314@users.noreply.github.com>
Date: Tue, 7 Feb 2023 13:58:21 -0600
Subject: [PATCH] fix potentially modifying event listeners set while iterating

---
 loader/src/loader/Event.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/loader/src/loader/Event.cpp b/loader/src/loader/Event.cpp
index 87c97e3b..133263b2 100644
--- a/loader/src/loader/Event.cpp
+++ b/loader/src/loader/Event.cpp
@@ -19,7 +19,9 @@ Event::~Event() {}
 void Event::postFrom(Mod* m) {
     if (m) this->sender = m;
 
-    for (auto h : Event::listeners()) {
+    std::unordered_set<EventListenerProtocol*> listeners_copy = Event::listeners();
+
+    for (auto h : listeners_copy) {
         if (h->passThrough(this) == ListenerResult::Stop) {
             break;
         }