@@ -425,10 +425,17 @@ toStringCache = null; super.append(d); return this; } + @Override + public synchronized StringBuffer appendN(char c, int n) { + toStringCache = null; + super.appendN(c, n); + return this; + } + /** * @throws StringIndexOutOfBoundsException {@inheritDoc} * @since 1.2 */ @Override