From: Danny Al-Gaaf <danny.al-gaaf@bisect.de>
Date: Fri, 13 Apr 2018 13:47:58 +0000 (+0200)
Subject: krbd.cc: fix parameter to variadic function
X-Git-Tag: v13.1.0~237^2~6
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=7e83dc6726034b5d2dc471e3be1a432b22c91c50;p=ceph.git

krbd.cc: fix parameter to variadic function

Fix for:

[src/krbd.cc:549]: (portability) Passing NULL after the last typed
 argument to a variadic function leads to undefined behaviour.

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>
---

diff --git a/src/krbd.cc b/src/krbd.cc
index c7baaebc922..97ba92ac3a7 100644
--- a/src/krbd.cc
+++ b/src/krbd.cc
@@ -546,7 +546,7 @@ static int do_unmap(struct udev *udev, dev_t devno, const string& buf)
          * libudev does not provide the "wait until the queue is empty"
          * API or the sufficient amount of primitives to build it from.
          */
-        string err = run_cmd("udevadm", "settle", "--timeout", "10", NULL);
+        string err = run_cmd("udevadm", "settle", "--timeout", "10", (char*)NULL);
         if (!err.empty())
           cerr << "rbd: " << err << std::endl;
       }