From 9bddeb9324ba119b2f6c0eaff786ec3c7192b4f7 Mon Sep 17 00:00:00 2001
From: Oliver James <oli@juce.com>
Date: Thu, 10 Oct 2024 15:42:24 +0100
Subject: [PATCH] MPEKeyboardComponent: Catch potential 'use after free' when
 cleaning up

---
 modules/juce_audio_utils/gui/juce_MPEKeyboardComponent.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/modules/juce_audio_utils/gui/juce_MPEKeyboardComponent.cpp b/modules/juce_audio_utils/gui/juce_MPEKeyboardComponent.cpp
index 0685c4d564..104a27e432 100644
--- a/modules/juce_audio_utils/gui/juce_MPEKeyboardComponent.cpp
+++ b/modules/juce_audio_utils/gui/juce_MPEKeyboardComponent.cpp
@@ -507,7 +507,11 @@ void MPEKeyboardComponent::noteReleased (MPENote finishedNote)
 
 void MPEKeyboardComponent::zoneLayoutChanged()
 {
-    MessageManager::callAsync ([this] { updateZoneLayout(); });
+    MessageManager::callAsync ([ref = SafePointer<MPEKeyboardComponent> { this }]
+    {
+        if (ref != nullptr)
+            ref->updateZoneLayout();
+    });
 }
 
 } // namespace juce