From 697643c0b6752b137a589e7e1c1bafe5d1c714d7 Mon Sep 17 00:00:00 2001
From: reuk <reuk@users.noreply.github.com>
Date: Tue, 25 Oct 2022 13:30:34 +0100
Subject: [PATCH] Component:  Add an assertion to check that the component
 remains alive when entering modal state

---
 modules/juce_gui_basics/components/juce_Component.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/modules/juce_gui_basics/components/juce_Component.cpp b/modules/juce_gui_basics/components/juce_Component.cpp
index cc7577c5db..7eb1d58918 100644
--- a/modules/juce_gui_basics/components/juce_Component.cpp
+++ b/modules/juce_gui_basics/components/juce_Component.cpp
@@ -1769,6 +1769,8 @@ void Component::enterModalState (bool shouldTakeKeyboardFocus,
     // thread, you'll need to use a MessageManagerLock object to make sure it's thread-safe.
     JUCE_ASSERT_MESSAGE_MANAGER_IS_LOCKED
 
+    SafePointer safeReference { this };
+
     if (! isCurrentlyModal (false))
     {
         // While this component is in modal state it may block other components from receiving
@@ -1776,6 +1778,13 @@ void Component::enterModalState (bool shouldTakeKeyboardFocus,
         // we must manually force the mouse to "leave" blocked components.
         ComponentHelpers::sendMouseEventToComponentsThatAreBlockedByModal (*this, &Component::internalMouseExit);
 
+        if (safeReference == nullptr)
+        {
+            // If you hit this assertion, the mouse-exit event above has caused the modal component to be deleted.
+            jassertfalse;
+            return;
+        }
+
         auto& mcm = *ModalComponentManager::getInstance();
         mcm.startModal (this, deleteWhenDismissed);
         mcm.attachCallback (this, callback);