From 9c07345842ef2fdcdd7ddc161e3b9b15e77e23a3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=A9rome=20Perrin?= <jerome@nexedi.com>
Date: Fri, 16 Aug 2013 15:00:24 +0200
Subject: [PATCH] Prevent infinite loop when input file is empty

---
 PyPDF2/pdf.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/PyPDF2/pdf.py b/PyPDF2/pdf.py
index 02804fba1..6deda0ed1 100644
--- a/PyPDF2/pdf.py
+++ b/PyPDF2/pdf.py
@@ -958,6 +958,9 @@ def read(self, stream):
         if debug: print ">>read", stream
         # start at the end:
         stream.seek(-1, 2)
+        if not stream.tell():
+            raise utils.PdfReadError, "File is empty"
+
         line = b_('')
         if debug: print "  line:",line
         while not line: