Highlight component throws Nullpointer when using q.alt=*:*

[kalyan chakravarti]

Hi,
       When I am trying to use q.alt=*:* without using q= param, the 
highlightComponent throws NPE.
responsebuilder.getHighlightQuery() is null in HighlightComponent.class

Here is the snippet of execption.

HTTP Status 500 - null java.lang.NullPointerException at 
org.apache.solr.handler.component.HighlightComponent.process(HighlightComponent.java:77)
 at 
org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:156)
 at 
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:128)
 at org.apache.solr.core.SolrCore.execute(SolrCore.java:1025) at 
org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:338) 
at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:272)
 at

Do I need to configure anything specific for q.alt=*:*.

Regards
Kalyan