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Message-ID: <409e13bc-9e0c-9db6-977b-1a90b18d278e@gentoo.org>
Date: Mon, 27 Jun 2016 19:41:49 +0200
From: Luca Barbato <lu_zero@...too.org>
To: musl@...ts.openwall.com
Subject: Re: Fix warnings when build with clang

On 27/06/16 19:21, Rich Felker wrote:
> On Mon, Jun 27, 2016 at 10:01:52AM -0700, weimingz@...eaurora.org wrote:
>> On 2016-06-25 02:37, Szabolcs Nagy wrote:
>>> * Zhao, Weiming <weimingz@...eaurora.org> [2016-06-24 17:18:23 -0700]:
>>>> Clang gives warnings about the missing parentheses for bitwise ops.
>>>>
>>>> It's not functional but just code readability.
>>>>
>>>> musl-m3/include/endian.h:32:25: warning: '&' within '|'
>>>> [-Wbitwise-op-parentheses]
>>>>        return __x>>24 | __x>>8&0xff00 | __x<<8&0xff0000 | __x<<24;
>>>>                       ~ ~~~~~~^~~~~~~
>>>
>>> if clang warns about system headers that's a clang bug.
>>
>> The endian.h is a musl file.
> 
> Right, which is why it's a system header.

I'm not sure there is a simple way to know what's a system header and
what is not, beside keeping a list.

And even in that case I'm not so sure the compiler should hide warnings
(no matter how fringe this actual warning is).

lu



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