[xml] usage for XML xmlParseChunk

["Prashanth R" <ramapra gmail com>]

My client code is making calls to 

 xmlParseChunk(m_xmlContextPtr, buffer, numBytes, terminate);

with passing in chunks of XML data. Is it Necessary that these chunks need to have complete < and > tags . 

Consider this example 

<root>

 <item1>

   <item2>item2hassomedata</item2>

   <item3>1</item3>

   <item4>

      <item40>440-0Data</item40>

      <item41>441Data</item41>

   </item4>

  <item5>thisisitem5</item5>

</item1>

<emptyElement attr="foo"/>

</root>

So consider this sequence 

xmlParseChunk 1 --> passing 4 characters <root

xmlParseChunk 2 --> passing rest of the buffer

 >

 <item1>

   <item2>item2hassomedata</item2>

   <item3>1</item3>

   <item4>

      <item40>440-0Data</item40>

      <item41>441Data</item41>

   </item4>

  <item5>thisisitem5</item5>

</item1>

<emptyElement attr="foo"/>

</root>

I find that the second call fails with an error code of 73 

XML_ERR_GT_REQUIRED

can someone shed some help on this ?