CVE-2021-45105-snippet-4.java

private void checkCyclicSubstitution(final String varName, final List<String> priorVariables) { 
    if (!priorVariables.contains(varName)) { 
        return; 
    } 
    final StringBuilder buf = new StringBuilder(BUF_SIZE); 
    buf.append("Infinite loop in property interpolation of "); 
    buf.append(priorVariables.remove(0)); 
    buf.append(": "); 
    appendWithSeparators(buf, priorVariables, "->"); 
    throw new IllegalStateException(buf.toString()); 
}