Groups > linux.kernel > #1207430

Re: GCOV_PROFILE_ALL breaks BUILD_BUG_ON(!is_power_of_2(8))

From	Johannes Berg <johannes@sipsolutions.net>
Newsgroups	linux.kernel
Subject	Re: GCOV_PROFILE_ALL breaks BUILD_BUG_ON(!is_power_of_2(8))
Date	2015-08-14 11:10 +0200
Message-ID	<pXj9U-618-15@gated-at.bofh.it> (permalink)
References	<pXixc-52G-3@gated-at.bofh.it> <pXixc-52G-1@gated-at.bofh.it> <pXj9U-618-1@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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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
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GCOV_PROFILE_ALL breaks BUILD_BUG_ON(!is_power_of_2(8)) Johannes Berg <johannes@sipsolutions.net> - 2015-08-14 10:30 +0200
  Re: GCOV_PROFILE_ALL breaks BUILD_BUG_ON(!is_power_of_2(8)) Michal Kubecek <mkubecek@suse.cz> - 2015-08-14 11:10 +0200
    Re: GCOV_PROFILE_ALL breaks BUILD_BUG_ON(!is_power_of_2(8)) Johannes Berg <johannes@sipsolutions.net> - 2015-08-14 11:10 +0200

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