From ac830e932df1fdbdbc1ba928a27db1d321a23fcd Mon Sep 17 00:00:00 2001
From: "Gregory P. Smith" <greg@mad-scientist.com>
Date: Sun, 23 Mar 2008 23:43:02 +0000
Subject: A bugfix for r61813, it would fail if the data size was >=2**32.

---
 Lib/gzip.py | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/Lib/gzip.py b/Lib/gzip.py
index f3cf9fe..2246c9d 100644
--- a/Lib/gzip.py
+++ b/Lib/gzip.py
@@ -15,10 +15,6 @@ FTEXT, FHCRC, FEXTRA, FNAME, FCOMMENT = 1, 2, 4, 8, 16
 
 READ, WRITE = 1, 2
 
-def U32(i):
-    """Return the low-order 32 bits, as a non-negative int or long."""
-    return i & 0xFFFFFFFFL
-
 def write32u(output, value):
     # The L format writes the bit pattern correctly whether signed
     # or unsigned.
@@ -306,7 +302,7 @@ class GzipFile:
         if crc32 != self.crc:
             raise IOError("CRC check failed %s != %s" % (hex(crc32),
                                                          hex(self.crc)))
-        elif isize != self.size:
+        elif isize != (self.size & 0xffffffffL):
             raise IOError, "Incorrect length of data produced"
 
     def close(self):
-- 
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