From a6e51c8aa1efe12478613942995e390a8c53a1db Mon Sep 17 00:00:00 2001
From: Chaosus <chaosus89@gmail.com>
Date: Sun, 19 Aug 2018 19:40:34 +0300
Subject: Fix crash when setting Material's next pass to itself

---
 scene/resources/material.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/scene/resources/material.cpp b/scene/resources/material.cpp
index 875b72159a..143a1438ea 100644
--- a/scene/resources/material.cpp
+++ b/scene/resources/material.cpp
@@ -34,6 +34,8 @@
 
 void Material::set_next_pass(const Ref<Material> &p_pass) {
 
+	ERR_FAIL_COND(p_pass == this);
+
 	if (next_pass == p_pass)
 		return;
 
-- 
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