Re: [Qemu-devel] Build error with git commit 8eb29f1bf5a974dc4c11d2d1f5e7c7f7a62be116 on x86_64

[Thomas Huth <thuth@redhat.com>]

On 25/02/2019 18.29, Andrew Randrianasulu wrote:
> В сообщении от Monday 25 February 2019 19:19:01 Philippe Mathieu-Daudc3a9 
> написал(а):
>> Hi Andrew,
>>
>> On 2/23/19 1:35 AM, Andrew Randrianasulu wrote:
>>> Hello!
>>>
>>> I just pulled latest git
>>
>> [...]
>>
>>> and default build with simple ./configure on slackware 14.2 x86-64 box
>>> failed like this:
>>>
>>> root@slax:~/src/qemu# LANG=C make -j 5
>>>         CHK version_gen.h
>>>   CC      qobject/block-qdict.o
>>>   CC      util/thread-pool.o
>>>   CC      util/main-loop.o
>>>   CC      util/qemu-timer.o
>>>   CC      util/iohandler.o
>>>   CC      util/aio-posix.o
>>> qobject/block-qdict.c: In function 'qdict_array_split':
>>> qobject/block-qdict.c:259:9: error: 'subqdict' may be used uninitialized
>>> in this function [-Werror=maybe-uninitialized]
>>>          qlist_append_obj(*dst, subqobj ?: QOBJECT(subqdict));
>>>          ^
>>
>> That's odd, I can not reproduce with a simple ./configure:
>>
>> $ cat /etc/slackware-version
>> Slackware 14.2
>>
>> $ gcc --version
>> gcc (GCC) 5.5.0
>>
> 
> Well, then may be this is false positive, right now another qemu instance is 
> busy inside same chroot, will try patch posted in earlier mail (after removing 
> CFLAG I added for compiling qemu at all after this error).
> 
> Thanks for trying to reproduce.

Just to be sure: You don't compile with -O3 or -O1 or -O0 in the CFLAGS
here, do you?

 Thomas