From 1b974379c8e92047202c742f8658a0831e0656c9 Mon Sep 17 00:00:00 2001
From: Karl Tauber <karl@jformdesigner.com>
Date: Wed, 8 Jul 2020 17:57:40 +0200
Subject: [PATCH] UIDefaultsLoader: check for endless recursion in
 resolveValue()

---
 .../src/main/java/com/formdev/flatlaf/UIDefaultsLoader.java   | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/flatlaf-core/src/main/java/com/formdev/flatlaf/UIDefaultsLoader.java b/flatlaf-core/src/main/java/com/formdev/flatlaf/UIDefaultsLoader.java
index 6abf6253..7d2340ba 100644
--- a/flatlaf-core/src/main/java/com/formdev/flatlaf/UIDefaultsLoader.java
+++ b/flatlaf-core/src/main/java/com/formdev/flatlaf/UIDefaultsLoader.java
@@ -212,6 +212,7 @@ class UIDefaultsLoader
 
 	static String resolveValue( String value, Function<String, String> propertiesGetter ) {
 		value = value.trim();
+		String value0 = value;
 
 		if( value.startsWith( PROPERTY_PREFIX ) )
 			value = value.substring( PROPERTY_PREFIX.length() );
@@ -232,6 +233,9 @@ class UIDefaultsLoader
 			throw new IllegalArgumentException( "variable or property '" + value + "' not found" );
 		}
 
+		if( newValue.equals( value0 ) )
+			throw new IllegalArgumentException( "endless recursion in variable or property '" + value + "'" );
+
 		return resolveValue( newValue, propertiesGetter );
 	}