diff --git "a/C:\\Users\\LIJUNL~1.SIP\\AppData\\Local\\Temp\\TortoiseGit\\PDF589B.tmp\\PDFDoc-07aa6f4-left.cc" "b/D:\\poppler\\poppler\\PDFDoc.cc"
index ec8d3df..8c38017 100644
--- "a/C:\\Users\\LIJUNL~1.SIP\\AppData\\Local\\Temp\\TortoiseGit\\PDF589B.tmp\\PDFDoc-07aa6f4-left.cc"
+++ "b/D:\\poppler\\poppler\\PDFDoc.cc"
@@ -1820,27 +1820,34 @@ Goffset PDFDoc::getStartXRef(GBool tryingToReconstruct)
       int c, n, i;
 
       // read last xrefSearchSize bytes
-      str->setPos(xrefSearchSize, -1);
-      for (n = 0; n < xrefSearchSize; ++n) {
-        if ((c = str->getChar()) == EOF) {
-          break;
-        }
-        buf[n] = c;
-      }
-      buf[n] = '\0';
-
-      // find startxref
-      for (i = n - 9; i >= 0; --i) {
-        if (!strncmp(&buf[i], "startxref", 9)) {
-          break;
-        }
-      }
-      if (i < 0) {
-        startXRefPos = 0;
-      } else {
-        for (p = &buf[i+9]; isspace(*p); ++p) ;
-        startXRefPos =  strToLongLong(p);
-      }
+	  int segnum = 0;
+	  for (; (xrefSearchSize - 16)*segnum < str->getLength(); segnum++)
+	  {
+		  str->setPos((xrefSearchSize - 16)*segnum + xrefSearchSize, -1);
+		  for (n = 0; n < xrefSearchSize; ++n) {
+			  if ((c = str->getChar()) == EOF) {
+				  break;
+			  }
+			  buf[n] = c;
+		  }
+		  buf[n] = '\0';
+
+		  // find startxref
+		  for (i = n - 9; i >= 0; --i) {
+			  if (!strncmp(&buf[i], "startxref", 9)) {
+				  break;
+			  }
+		  }
+		  if (i < 0) {
+			  startXRefPos = 0;
+		  }
+		  else {
+			  for (p = &buf[i + 9]; isspace(*p); ++p);
+			  startXRefPos = strToLongLong(p);
+			  break;
+		  }
+
+	  }
     }
 
   }