linux-kernel - Re: [PATCH net] hv_sock: Suppress bogus "may be used uninitialized" warnings

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Message-Id: <20190616.140106.158669787444398226.davem@davemloft.net>
Date:   Sun, 16 Jun 2019 14:01:06 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     decui@...rosoft.com
Cc:     netdev@...r.kernel.org, mikelley@...rosoft.com,
        linux-hyperv@...r.kernel.org, linux-kernel@...r.kernel.org,
        kys@...rosoft.com, sthemmin@...rosoft.com, haiyangz@...rosoft.com,
        Alexander.Levin@...rosoft.com, olaf@...fle.de, apw@...onical.com,
        jasowang@...hat.com, vkuznets@...hat.com,
        marcelo.cerri@...onical.com
Subject: Re: [PATCH net] hv_sock: Suppress bogus "may be used
 uninitialized" warnings

From: Dexuan Cui <decui@...rosoft.com>
Date: Sat, 15 Jun 2019 05:00:57 +0000

> gcc 8.2.0 may report these bogus warnings under some condition:
> 
> warning: ‘vnew’ may be used uninitialized in this function
> warning: ‘hvs_new’ may be used uninitialized in this function
> 
> Actually, the 2 pointers are only initialized and used if the variable
> "conn_from_host" is true. The code is not buggy here.
> 
> Signed-off-by: Dexuan Cui <decui@...rosoft.com>

Applied.