[Xen-changelog] [xen master] blktap2: initialise buf to NULL in img2qcow.c:main

[patchbot@xxxxxxx]

commit 7e2a1f9402b088c5bf62ceb157e7ea6dfe8196f0
Author:     Wei Liu <wei.liu2@xxxxxxxxxx>
AuthorDate: Fri Apr 29 16:11:16 2016 +0100
Commit:     Wei Liu <wei.liu2@xxxxxxxxxx>
CommitDate: Fri May 6 15:50:28 2016 +0100

    blktap2: initialise buf to NULL in img2qcow.c:main
    
    Gcc complains:
    
    qcow2raw.c: In function â??mainâ??:
    qcow2raw.c:387:17: error: â??bufâ?? may be used uninitialized in this 
function [-Werror=maybe-uninitialized]
        treq.buf     = buf;
                     ^
    
    But at the point of that assignment, buf is a valid buffer allocated by
    posix_memalign and filled in by read.
    
    Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
    Reviewed-by: Doug Goldstein <cardoe@xxxxxxxxxx>
    Release-acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>
---
 tools/blktap2/drivers/img2qcow.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/blktap2/drivers/img2qcow.c b/tools/blktap2/drivers/img2qcow.c
index 57b931e..7376382 100644
--- a/tools/blktap2/drivers/img2qcow.c
+++ b/tools/blktap2/drivers/img2qcow.c
@@ -166,7 +166,7 @@ int main(int argc, const char *argv[])
         int ret = -1, fd, len, err;
        struct timeval timeout;
        uint64_t i;
-       char *buf;
+       char *buf = NULL;
        td_request_t treq;
         td_disk_info_t info;
         td_vbd_request_t* vreq;
--
generated by git-patchbot for /home/xen/git/xen.git#master

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