From ef6161532dbd579fed2c537e76ff0ea60d32595c Mon Sep 17 00:00:00 2001
From: Yuri Roubinsky <chaosus89@gmail.com>
Date: Mon, 28 Oct 2019 08:35:33 +0300
Subject: [PATCH] Fix shader crash if non-boolean expression inserted into "if"

---
 servers/visual/shader_language.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/servers/visual/shader_language.cpp b/servers/visual/shader_language.cpp
index 41a6b27b840..4e5e816c02d 100644
--- a/servers/visual/shader_language.cpp
+++ b/servers/visual/shader_language.cpp
@@ -4143,6 +4143,11 @@ Error ShaderLanguage::_parse_block(BlockNode *p_block, const Map<StringName, Bui
 			if (!n)
 				return ERR_PARSE_ERROR;
 
+			if (n->get_datatype() != TYPE_BOOL) {
+				_set_error("Expected boolean expression");
+				return ERR_PARSE_ERROR;
+			}
+
 			tk = _get_token();
 			if (tk.type != TK_PARENTHESIS_CLOSE) {
 				_set_error("Expected ')' after expression");