From: David Kalnischkies <david@kalnischkies.de>
Date: Tue, 22 Dec 2015 14:56:47 +0000 (+0100)
Subject: follow dpkg and xz and use CRC64 for xz compression
X-Git-Tag: 1.1.6~7
X-Git-Url: https://git.saurik.com/apt.git/commitdiff_plain/885a1ffd27e621d7cd2452b39e2053e2f1044253

follow dpkg and xz and use CRC64 for xz compression

dpkg switched from CRC32 to CRC64 in
777915108d9d36d022dc4fc4151a615fc95e5032 with the message:
| This is the default CRC used by the xz command-line tool, align with
| it and switch from CRC32 to CRC64. It should provide slightly better
| detection against damaged data, at a negligible speed difference.
---

diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc
index 06c4beeda..11b0e658d 100644
--- a/apt-pkg/contrib/fileutl.cc
+++ b/apt-pkg/contrib/fileutl.cc
@@ -1278,7 +1278,7 @@ public:
       {
 	 if (compressor.Name == "xz")
 	 {
-	    if (lzma_easy_encoder(&lzma->stream, xzlevel, LZMA_CHECK_CRC32) != LZMA_OK)
+	    if (lzma_easy_encoder(&lzma->stream, xzlevel, LZMA_CHECK_CRC64) != LZMA_OK)
 	       return false;
 	 }
 	 else