linux-kernel - Re: lib/test_bitmap.c:920:2: error: call to __compiletime_assert_348 declared with 'error' attribute: BUILD_BUG_ON failed: !__builtin_constant

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Date:   Tue, 18 Jul 2023 15:40:35 +0200
From:   Alexander Lobakin <aleksander.lobakin@...el.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
CC:     Alexander Lobakin <alexandr.lobakin@...el.com>,
        <llvm@...ts.linux.dev>, <oe-kbuild-all@...ts.linux.dev>,
        <linux-kernel@...r.kernel.org>, Yury Norov <yury.norov@...il.com>,
        kernel test robot <lkp@...el.com>
Subject: Re: lib/test_bitmap.c:920:2: error: call to __compiletime_assert_348
 declared with 'error' attribute: BUILD_BUG_ON failed:
 !__builtin_constant_p(res)

From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Date: Mon, 17 Jul 2023 13:04:11 +0300

> On Mon, Jul 17, 2023 at 12:42:57PM +0800, kernel test robot wrote:
>> Hi Alexander,

Hi,

>>
>> FYI, the error/warning still remains.
> 
> Alexander, either you can escalate this or just propose something to discuss.
> 

Sorry, I had some days off.
I've been waiting for more info from the Clang devs to understand
whether and how I should fix this.
I see that Yury submitted fix (two actually) already, so I'll go review
it now.

Thanks,
Olek