12.09.2019 0:46, John Snow wrote:
>
>
> On 9/11/19 10:09 AM, Vladimir Sementsov-Ogievskiy wrote:
>> 10.09.2019 23:37, no-re...@patchew.org wrote:
>>> Patchew URL:
>>> https://patchew.org/QEMU/20190910162724.79574-1-vsement...@virtuozzo.com/
>>>
>>>
>>>
>>> Hi,
>>>
>>> This series failed the docker-quick@centos7 build test. Please find the
>>> testing commands and
>>> their output below. If you have Docker installed, you can probably
>>> reproduce it
>>> locally.
>>>
>>> === TEST SCRIPT BEGIN ===
>>> #!/bin/bash
>>> make docker-image-centos7 V=1 NETWORK=1
>>> time make docker-test-quick@centos7 SHOW_ENV=1 J=14 NETWORK=1
>
> (Was patchew even using clang?)
hmm gcc 9.2 don't show such error but clang does.
>
>>> === TEST SCRIPT END ===
>>>
>>> libudev no
>>> default devices yes
>>>
>>> warning: Python 2 support is deprecated
>>> warning: Python 3 will be required for building future versions of QEMU
>>>
>>> NOTE: cross-compilers enabled: 'cc'
>>> GEN x86_64-softmmu/config-devices.mak.tmp
>>> ---
>>> CC block/qed-cluster.o
>>> CC block/qed-check.o
>>> /tmp/qemu-test/src/block/qcow2-bitmap.c: In function
>>> 'qcow2_co_remove_persistent_dirty_bitmap':
>>> /tmp/qemu-test/src/block/qcow2-bitmap.c:502:8: error: 'bm' may be used
>>> uninitialized in this function [-Werror=maybe-uninitialized]
>>> if (bm == NULL) {
>>> ^
>>> /tmp/qemu-test/src/block/qcow2-bitmap.c:1413:18: note: 'bm' was declared
>>> here
>>>
>>>
>>> The full log is available at
>>> http://patchew.org/logs/20190910162724.79574-1-vsement...@virtuozzo.com/testing.docker-quick@centos7/?type=message.
>>> ---
>>> Email generated automatically by Patchew [https://patchew.org/].
>>> Please send your feedback to patchew-de...@redhat.com
>>>
>>
>> Who knows, how to clang Qemu?
>>
>> I try with
>> ./configure --target-list=x86_64-softmmu --enable-debug --disable-virtfs
>> --enable-werror --audio-drv-list=oss --extra-cflags=-Wall
>> --enable-sanitizers --cc=clang --cxx=clang++
>> make -j9
>>
>
> ../../configure --target-list="x86_64-softmmu" --cc=clang --cxx=clang++
> --host-cc=clang
>
> works OK for me in fedora 30.
So, now I've moved to fedora from rhel-based virtuozzo, and it just works :)
>
> --target-list="x86_64-softmmu" --cc=clang --cxx=clang++ --host-cc=clang
> --enable-werror --extra-cflags=-Wall
>
> Seems OK too, and finally adding
>
> --enable-sanitizers
>
> also appears to work alright.
>
>
> clang version 8.0.0 (Fedora 8.0.0-1.fc30)
> Target: x86_64-unknown-linux-gnu
> Thread model: posix
> InstalledDir: /usr/bin
>
>
> Maybe something bad in your ccache or some intermediate state in your
> build dir. I use separate build directories for gcc and clang just in case.
>
Thanks for help!
--
Best regards,
Vladimir
