Created attachment 31701 [details]
stacktrace

I noticed a bug in tomcat 8.0.8 not present in 8.0.5: calling a jsp:include using a jsp:param with empty value generates an exception (look at the attached stacktrace).

This code produces exception
<jsp:include page="include.jsp">
	<jsp:param name="test" value="" />
</jsp:include>



Note that using a variable with empty value, no exception is thrown

This code doesn't produce exception
<c:set var="PARAM" value="" />
<jsp:include page="include.jsp">
	<jsp:param name="test" value="${PARAM}" />
</jsp:include>



It happens with tomcat 8.0.8, whilst tomcat 8.0.5 is not affected by this bug, and it does not depend on the included file (in my tests, include.jsp was an empty file)