linux-kernel - Re: [x86] BUG()/BUG_ON() macros cannot be disabled

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Message-ID: <6262522.aGb77nX7K0@ws-140106>
Date:   Tue, 25 Sep 2018 14:31:05 +0200
From:   Alexander Stein <alexander.stein@...tec-electronic.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     alexander.lochmann@...dortmund.de,
        linux-arch <linux-arch@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [x86] BUG()/BUG_ON() macros cannot be disabled

Hello Arnd,

On Tuesday, September 25, 2018, 2:06:38 PM CEST Arnd Bergmann wrote:
> We don't really want an empty macro any more, this was used in
> the past, but causes compile-time warnings and undefined behavior
> for no good reason.

Can you elaborate or point me to some other discussion about that undefined behavior?

Best regards,
Alexander