From 4be8f200f05c7601737e984206b21ebff8818055 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C3=A9mi=20Verschelde?= <rverschelde@gmail.com>
Date: Thu, 10 Feb 2022 18:22:20 +0100
Subject: Fix crash calling `_activate()` on ShaderGlobalsOverride out of tree

Fixes #45984.
---
 scene/main/shader_globals_override.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/scene/main/shader_globals_override.cpp b/scene/main/shader_globals_override.cpp
index 240e662efb..09dfc50066 100644
--- a/scene/main/shader_globals_override.cpp
+++ b/scene/main/shader_globals_override.cpp
@@ -221,6 +221,7 @@ void ShaderGlobalsOverride::_get_property_list(List<PropertyInfo> *p_list) const
 }
 
 void ShaderGlobalsOverride::_activate() {
+	ERR_FAIL_NULL(get_tree());
 	List<Node *> nodes;
 	get_tree()->get_nodes_in_group(SceneStringNames::get_singleton()->shader_overrides_group_active, &nodes);
 	if (nodes.size() == 0) {
-- 
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