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Re: [Qemu-devel] [PATCH] colo-compare: fix the dangerous assignment

From: Mao Zhongyi
Subject: Re: [Qemu-devel] [PATCH] colo-compare: fix the dangerous assignment
Date: Fri, 17 Nov 2017 09:21:09 +0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0

On 11/17/2017 04:07 AM, Stefan Weil wrote:
Am 16.11.2017 um 03:28 schrieb Mao Zhongyi:
Cc: Peter Maydell <address@hidden>
Cc: Jason Wang <address@hidden>
Cc: Zhang Chen <address@hidden>
Cc: Li Zhijian <address@hidden>
Cc: Paolo Bonzini <address@hidden>
Fixes: 8ec14402029d783720f4312ed8a925548e1dad61
Reported-by: Peter Maydell <address@hidden>
Reported-by: Paolo Bonzini <address@hidden>
Signed-off-by: Mao Zhongyi <address@hidden>
 net/colo-compare.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/colo-compare.c b/net/colo-compare.c
index ccdcba2..1ce195f 100644
--- a/net/colo-compare.c
+++ b/net/colo-compare.c
@@ -179,7 +179,7 @@ static int packet_enqueue(CompareState *s, int mode, 
Connection **con)
                          "drop packet");
-    con = &conn;
+    *con = conn;

     return 0;

Hi, Stefan

The patch is definitely needed if the new function parameter con
should work.

It also fixes a gcc compiler warning:
net/colo-compare.c:139:67: warning: parameter ‘con’ set but not used

I‌ think using -Wextra would be really good to catch such bugs earlier.

Thanks a bunch. I got it. :)


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