From 129223d50268e5409007c735da9e4931e1540686 Mon Sep 17 00:00:00 2001
From: MrTheShy <49885496+MrTheShy@users.noreply.github.com>
Date: Fri, 6 Mar 2026 17:47:26 +0100
Subject: [PATCH] Guard setCaretVisible and setCaretIndex against null movie

tickDirectEdit calls into Iggy every tick without checking if the
movie is still valid, which crashes inside iggy_w64.dll when the
Flash movie gets unloaded or isn't ready yet.
---
 Minecraft.Client/Common/UI/UIControl_TextInput.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Minecraft.Client/Common/UI/UIControl_TextInput.cpp b/Minecraft.Client/Common/UI/UIControl_TextInput.cpp
index 0bfa0bbd3..8e679b7c7 100644
--- a/Minecraft.Client/Common/UI/UIControl_TextInput.cpp
+++ b/Minecraft.Client/Common/UI/UIControl_TextInput.cpp
@@ -94,6 +94,9 @@ void UIControl_TextInput::SetCharLimit(int iLimit)
 
 void UIControl_TextInput::setCaretVisible(bool visible)
 {
+	if (!m_parentScene || !m_parentScene->getMovie())
+		return;
+
 	// Check once whether this SWF's FJ_TextInput actually has a m_mcCaret child.
 	// IggyValuePathMakeNameRef always succeeds (creates a ref to undefined),
 	// so we validate by trying to read a property from the resolved path.
@@ -124,6 +127,9 @@ void UIControl_TextInput::setCaretVisible(bool visible)
 
 void UIControl_TextInput::setCaretIndex(int index)
 {
+	if (!m_parentScene || !m_parentScene->getMovie())
+		return;
+
 	IggyDataValue result;
 	IggyDataValue value[1];
 	value[0].type = IGGY_DATATYPE_number;