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Subject: Re: linux-next: Tree for Jul 10
From:   Randy Dunlap <rdunlap@infradead.org>
To:     Stephen Rothwell <sfr@canb.auug.org.au>,
        Andy Shevchenko <andriy.shevchenko@intel.com>
Cc:     Linux Next Mailing List <linux-next@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Linus Torvalds <torvalds@linux-foundation.org>
References: <20200710183318.7b808092@canb.auug.org.au>
 <20200712155604.GA342822@smile.fi.intel.com>
 <20200713080152.63ee1246@canb.auug.org.au>
 <e519f1c2-9761-4866-4878-09cc3da23d1f@infradead.org>
Message-ID: <31e99bdc-1243-3be7-74aa-59c01820ed8e@infradead.org>
Date:   Sun, 12 Jul 2020 19:26:15 -0700
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On 7/12/20 7:19 PM, Randy Dunlap wrote:
> On 7/12/20 3:01 PM, Stephen Rothwell wrote:
>> Hi Andy,
>>
>> On Sun, 12 Jul 2020 18:56:04 +0300 Andy Shevchenko <andriy.shevchenko@intel.com> wrote:
>>>
>>> On Fri, Jul 10, 2020 at 06:33:18PM +1000, Stephen Rothwell wrote:
>>>>
>>>> Changes since 20200709:
>>>
>>> I can't build it on Debian with Sparse enabled
>>>
>>> CC      init/main.o
>>> init/main.c:760:20: warning: no previous prototype for ‘mem_encrypt_init’ [-Wmissing-prototypes]
>>> 760 | void __init __weak mem_encrypt_init(void) { }
>>> |                    ^~~~~~~~~~~~~~~~
>>> CHECK   /home/andy/prj/linux-topic-uart/init/main.c
>>> include/linux/compiler.h:309:16: error: typename in expression
>>> include/linux/compiler.h:309:16: error: Expected ) in function call
>>> include/linux/compiler.h:309:16: error: got :
>>> ...
>>> (All READ_ONCE() entries fail)
>>>
>>> Is it known issue?
>>
>> Not that I am aware of at the moment.  Does next-20200709 work?  Does
>> Linus' tree work?  The only obvious thing I can think of is commit
> 
> I'm hitting this same thing on 5.8-rc5. (x86_64)
> 
> 
>> 6ec4476ac825 ("Raise gcc version requirement to 4.9")
>>
>> The commmit message says:
>>
>>     Using _Generic also means that you will need to have a very recent
>>     version of 'sparse', but thats easy to build yourself, and much less of
>>     a hassle than some old gcc version can be.

OK, no problems, newer sparse fixes it.

-- 
~Randy