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Subject: Re: GCOV_PROFILE_ALL breaks BUILD_BUG_ON(!is_power_of_2(8))
From: Johannes Berg <johannes@sipsolutions.net>
To: Michal Kubecek <mkubecek@suse.cz>
Cc: linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
	linux-kernel <linux-kernel@vger.kernel.org>
Date: Fri, 14 Aug 2015 11:05:47 +0200
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On Fri, 2015-08-14 at 11:00 +0200, Michal Kubecek wrote:

> > but should I have expected this?
> 
> It might have something to do with the fact that is_power_of_2() 
> being an inline function, perhaps with this compiler option it 
> translates to something that can't be used in the context 
> BUILD_BUG_ON() uses it in.

Evidently, yeah.

> There is a BUILD_BUG_ON_NOT_POWER_OF_2() macro you could use.
> 

Good point, I'll do that, thanks.

johannes