A stab in the dark attempt to fix the alpha/tru64 buildbot problem and add more
test coverage of valid inputs to zlib.crc32.
diff --git a/Lib/tarfile.py b/Lib/tarfile.py
index 92fdb7b..4991ae1 100644
--- a/Lib/tarfile.py
+++ b/Lib/tarfile.py
@@ -420,7 +420,7 @@
except ImportError:
raise CompressionError("zlib module is not available")
self.zlib = zlib
- self.crc = zlib.crc32("")
+ self.crc = zlib.crc32("") & 0xffffffffL
if mode == "r":
self._init_read_gz()
else:
@@ -458,7 +458,7 @@
"""Write string s to the stream.
"""
if self.comptype == "gz":
- self.crc = self.zlib.crc32(s, self.crc)
+ self.crc = self.zlib.crc32(s, self.crc) & 0xffffffffL
self.pos += len(s)
if self.comptype != "tar":
s = self.cmp.compress(s)