From: Wei Liu <wei.liu2@citrix.com>
Date: Fri, 29 Apr 2016 15:11:17 +0000 (+0100)
Subject: blktap2: initialise buf in qcow2raw.c:main
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~1148
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/success//%22http:/www.example.com/cgi/success/?a=commitdiff_plain;h=75529048f4e81edf4b6af54418976f93a9b90e02;p=xen.git

blktap2: initialise buf in qcow2raw.c:main

Gcc complains:

qcow2raw.c: In function ‘main’:
qcow2raw.c:387:17: error: ‘buf’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
    treq.buf     = buf;
                 ^

But buf is a valid buffer allocated by posix_memalign at that point.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Reviewed-by: Doug Goldstein <cardoe@cardoe.com>
Release-acked-by: Wei Liu <wei.liu2@citrix.com>
---

diff --git a/tools/blktap2/drivers/qcow2raw.c b/tools/blktap2/drivers/qcow2raw.c
index a2e417dae1..5ad730595e 100644
--- a/tools/blktap2/drivers/qcow2raw.c
+++ b/tools/blktap2/drivers/qcow2raw.c
@@ -202,7 +202,7 @@ int main(int argc, const char *argv[])
 	uint64_t size;
 	struct timeval timeout;
 	uint64_t i;
-	char *buf;
+	char *buf = NULL;
 	struct stat finfo;
 	td_request_t treq;
 	td_vbd_request_t* vreq;