From: Sage Weil <sage@inktank.com>
Date: Fri, 27 Sep 2013 22:29:18 +0000 (-0700)
Subject: common/buffer: explicitly init zbuf to zeros
X-Git-Tag: v0.72-rc1~42^2~8
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=a3e9344103525dbbb7dc8cd70a4b8c1df134685d;p=ceph.git

common/buffer: explicitly init zbuf to zeros

This might not be necessary?

Signed-off-by: Sage Weil <sage@inktank.com>
---

diff --git a/src/common/buffer.cc b/src/common/buffer.cc
index 3a8190f0280b..064775d29931 100644
--- a/src/common/buffer.cc
+++ b/src/common/buffer.cc
@@ -31,8 +31,17 @@
 
 namespace ceph {
 
-
-static unsigned char zbuf[128];
+  // some zeros; used when concatenating buffers with cached crc
+  static unsigned char zbuf[128] = {
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+    };
 
 #ifdef BUFFER_DEBUG
 static uint32_t simple_spinlock_t buffer_debug_lock = SIMPLE_SPINLOCK_INITIALIZER;