linux-kernel - Re: [PATCH V2 00/15] cleanup cppcheck signed shifting errors

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Message-ID: <20190624152818.GX3463@hirez.programming.kicks-ass.net>
Date:   Mon, 24 Jun 2019 17:28:18 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Phong Tran <tranmanphong@...il.com>
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Subject: Re: [PATCH V2 00/15] cleanup cppcheck signed shifting errors

On Mon, Jun 24, 2019 at 05:27:43PM +0200, Peter Zijlstra wrote:
> On Mon, Jun 24, 2019 at 08:50:50PM +0700, Phong Tran wrote:
> > There are errors with cppcheck 
> > 
> > "Shifting signed 32-bit value by 31 bits is undefined behaviour errors"
> 
> As I've already told you; your checker is bad. That is not in face

Bah, fact, typing hard.

> undefined behaviour in the kernel.
> 
> That's not to say you shouldn't clean up the code, but don't give broken
> checkout output as a reason.