From 58d6974bf5a864a1dcc1eeafd22e1db9e1606ca8 Mon Sep 17 00:00:00 2001
From: Saebekassebil <saebekassebil@gmail.com>
Date: Mon, 22 Oct 2012 17:53:15 +0200
Subject: [PATCH] Implement NullStream, fix #1832

---
 src/parser.js | 3 +++
 src/stream.js | 9 +++++++++
 2 files changed, 12 insertions(+)

diff --git a/src/parser.js b/src/parser.js
index 3c9408f6b..d0dee45ee 100644
--- a/src/parser.js
+++ b/src/parser.js
@@ -230,6 +230,9 @@ var Parser = (function ParserClosure() {
       return stream;
     },
     makeFilter: function Parser_makeFilter(stream, name, length, params) {
+      if (stream.dict.get('Length') === 0) {
+        return new NullStream(stream);
+      }
       if (name == 'FlateDecode' || name == 'Fl') {
         if (params) {
           return new PredictorStream(new FlateStream(stream), params);
diff --git a/src/stream.js b/src/stream.js
index 7b68800f1..2a898df81 100644
--- a/src/stream.js
+++ b/src/stream.js
@@ -2350,3 +2350,12 @@ var LZWStream = (function LZWStreamClosure() {
   return LZWStream;
 })();
 
+var NullStream = (function NullStreamClosure() {
+  function NullStream() {
+    Stream.call(this, new Uint8Array(0));
+  }
+
+  NullStream.prototype = Stream.prototype;
+
+  return NullStream;
+})();