From: Linus Torvalds <torvalds@g5.osdl.org>
Date: Wed, 6 Jul 2005 00:06:09 +0000 (-0700)
Subject: Don't special-case a zero-sized compression.
X-Git-Tag: v0.99~64
X-Git-Url: https://git.octo.it/?a=commitdiff_plain;h=291ec0f2d2ce65e5ccb876b46d6468af49ddb82e;p=git.git

Don't special-case a zero-sized compression.

zlib actually writes a header for that case, and while ignoring that
header will get us the right data, it will also end up messing up our
stream position.  So we actually want zlib to "uncompress" even an empty
object.
---

diff --git a/unpack-objects.c b/unpack-objects.c
index 97d26818..6383db94 100644
--- a/unpack-objects.c
+++ b/unpack-objects.c
@@ -55,8 +55,6 @@ static void *get_data(unsigned long size)
 	z_stream stream;
 	void *buf = xmalloc(size);
 
-	if (!size)
-		return buf;
 	memset(&stream, 0, sizeof(stream));
 
 	stream.next_out = buf;