--- poppler/Lexer.cc.orig	2008-01-21 20:59:14.000000000 +0100
+++ poppler/Lexer.cc	2008-02-18 19:45:57.000000000 +0100
@@ -119,7 +119,7 @@
 }
 
 int Lexer::lookChar() {
-  
+
   if (LOOK_VALUE_NOT_CACHED != lookCharLastValueCached) {
     return lookCharLastValueCached;
   }
@@ -315,12 +315,11 @@
 	    s->append(tokBuf, tokBufSize);
 	  p = tokBuf;
 	  n = 0;
-	  
+
 	  // we are growing see if the document is not malformed and we are growing too much
 	  if (objNum != -1)
 	  {
-	    int newObjNum = xref->getNumEntry(curStr.streamGetPos());
-	    if (newObjNum != objNum)
+	    if (!xref ||  xref->getNumEntry(curStr.streamGetPos()) != objNum)
 	    {
 	      error(getPos(), "Unterminated string");
 	      done = gTrue;