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Date:   Mon, 25 Feb 2019 16:07:12 -0800
From:   Linus Torvalds <>
To:     Qian Cai <>
Cc:     Hugh Dickins <>,
        "Darrick J. Wong" <>,
        Andrew Morton <>,
        Matej Kupljen <>,
        Al Viro <>,
        Dan Carpenter <>,
        Linux List Kernel Mailing <>,
        linux-fsdevel <>,
        Linux-MM <>
Subject: Re: [PATCH] tmpfs: fix uninitialized return value in shmem_link

On Mon, Feb 25, 2019 at 4:03 PM Qian Cai <> wrote:
> >
> > Of course, that's just gcc. I have no idea what llvm ends up doing.
> Clang 7.0:
> # clang  -O2 -S -Wall /tmp/test.c
> /tmp/test.c:46:6: warning: variable 'ret' is used uninitialized whenever 'if'
> condition is false [-Wsometimes-uninitialized]

Ok, good.

Do we have any clang builds in any of the zero-day robot
infrastructure or something? Should we?

And maybe this was how Dan noticed the problem in the first place? Or
is it just because of his eagle-eyes?


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