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[83.57.170.138]) by smtp.gmail.com with ESMTPSA id n16sm912288wra.19.2020.07.08.09.50.29 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 08 Jul 2020 09:50:30 -0700 (PDT) Subject: Re: build error of unused function as MACRO G_DEFINE_AUTOPTR_CLEANUP_FUNC expand To: Li Qiang , "qemu-devel@nongnu.org" , "eblake@redhat.com" , "liq3ea@gmail.com" , Alexander Bulekov , Paolo Bonzini , Stefan Hajnoczi , Bandan Das References: <5F05E942.FB9110.20278@mail-m971.mail.163.com> From: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= Autocrypt: addr=philmd@redhat.com; keydata= mQINBDXML8YBEADXCtUkDBKQvNsQA7sDpw6YLE/1tKHwm24A1au9Hfy/OFmkpzo+MD+dYc+7 bvnqWAeGweq2SDq8zbzFZ1gJBd6+e5v1a/UrTxvwBk51yEkadrpRbi+r2bDpTJwXc/uEtYAB GvsTZMtiQVA4kRID1KCdgLa3zztPLCj5H1VZhqZsiGvXa/nMIlhvacRXdbgllPPJ72cLUkXf z1Zu4AkEKpccZaJspmLWGSzGu6UTZ7UfVeR2Hcc2KI9oZB1qthmZ1+PZyGZ/Dy+z+zklC0xl XIpQPmnfy9+/1hj1LzJ+pe3HzEodtlVA+rdttSvA6nmHKIt8Ul6b/h1DFTmUT1lN1WbAGxmg CH1O26cz5nTrzdjoqC/b8PpZiT0kO5MKKgiu5S4PRIxW2+RA4H9nq7nztNZ1Y39bDpzwE5Sp bDHzd5owmLxMLZAINtCtQuRbSOcMjZlg4zohA9TQP9krGIk+qTR+H4CV22sWldSkVtsoTaA2 qNeSJhfHQY0TyQvFbqRsSNIe2gTDzzEQ8itsmdHHE/yzhcCVvlUzXhAT6pIN0OT+cdsTTfif MIcDboys92auTuJ7U+4jWF1+WUaJ8gDL69ThAsu7mGDBbm80P3vvUZ4fQM14NkxOnuGRrJxO qjWNJ2ZUxgyHAh5TCxMLKWZoL5hpnvx3dF3Ti9HW2dsUUWICSQARAQABtDJQaGlsaXBwZSBN YXRoaWV1LURhdWTDqSAoUGhpbCkgPHBoaWxtZEByZWRoYXQuY29tPokCVQQTAQgAPwIbDwYL CQgHAwIGFQgCCQoLBBYCAwECHgECF4AWIQSJweePYB7obIZ0lcuio/1u3q3A3gUCXsfWwAUJ KtymWgAKCRCio/1u3q3A3ircD/9Vjh3aFNJ3uF3hddeoFg1H038wZr/xi8/rX27M1Vj2j9VH 0B8Olp4KUQw/hyO6kUxqkoojmzRpmzvlpZ0cUiZJo2bQIWnvScyHxFCv33kHe+YEIqoJlaQc JfKYlbCoubz+02E2A6bFD9+BvCY0LBbEj5POwyKGiDMjHKCGuzSuDRbCn0Mz4kCa7nFMF5Jv piC+JemRdiBd6102ThqgIsyGEBXuf1sy0QIVyXgaqr9O2b/0VoXpQId7yY7OJuYYxs7kQoXI 6WzSMpmuXGkmfxOgbc/L6YbzB0JOriX0iRClxu4dEUg8Bs2pNnr6huY2Ft+qb41RzCJvvMyu gS32LfN0bTZ6Qm2A8ayMtUQgnwZDSO23OKgQWZVglGliY3ezHZ6lVwC24Vjkmq/2yBSLakZE 6DZUjZzCW1nvtRK05ebyK6tofRsx8xB8pL/kcBb9nCuh70aLR+5cmE41X4O+MVJbwfP5s/RW 9BFSL3qgXuXso/3XuWTQjJJGgKhB6xXjMmb1J4q/h5IuVV4juv1Fem9sfmyrh+Wi5V1IzKI7 RPJ3KVb937eBgSENk53P0gUorwzUcO+ASEo3Z1cBKkJSPigDbeEjVfXQMzNt0oDRzpQqH2vp apo2jHnidWt8BsckuWZpxcZ9+/9obQ55DyVQHGiTN39hkETy3Emdnz1JVHTU0Q== Message-ID: Date: Wed, 8 Jul 2020 18:50:29 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <5F05E942.FB9110.20278@mail-m971.mail.163.com> Content-Language: en-US Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=philmd@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=207.211.31.120; envelope-from=philmd@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/07 17:25:10 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -40 X-Spam_score: -4.1 X-Spam_bar: ---- X-Spam_report: (-4.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Cc'ing the fuzzing maintainers. On 7/8/20 5:41 PM, Li Qiang wrote: > Hello all, > >   > > I build qemu with fuzzing enabled using clang and following error come. > >   > > nbd/server.c:1937:1: error: unused function > 'glib_listautoptr_cleanup_NBDExtentArray' [-Werror,-Wunused-function] > > G_DEFINE_AUTOPTR_CLEANUP_FUNC(NBDExtentArray, nbd_extent_array_free); > > ^ > > /usr/include/glib-2.0/glib/gmacros.h:462:22: note: expanded from macro > 'G_DEFINE_AUTOPTR_CLEANUP_FUNC' > >   static inline void _GLIB_AUTOPTR_LIST_FUNC_NAME(TypeName) (GList **_l) > { g_list_free_full (*_l, (GDestroyNotify) func); } \ > >                      ^ > > /usr/include/glib-2.0/glib/gmacros.h:443:48: note: expanded from macro > '_GLIB_AUTOPTR_LIST_FUNC_NAME' > > #define _GLIB_AUTOPTR_LIST_FUNC_NAME(TypeName) > glib_listautoptr_cleanup_##TypeName > >                                                ^ > > :170:1: note:   CC      crypto/hash-glib.o > > expanded from here > > glib_listautoptr_cleanup_NBDExtentArray > > ^ > > nbd/server.c:1937:1: error: unused function > 'glib_slistautoptr_cleanup_NBDExtentArray' [-Werror,-Wunused-function] > > /usr/include/glib-2.0/glib/gmacros.h:463:22: note: expanded from macro > 'G_DEFINE_AUTOPTR_CLEANUP_FUNC' > >   static inline void _GLIB_AUTOPTR_SLIST_FUNC_NAME(TypeName) (GSList > **_l) { g_slist_free_full (*_l, (GDestroyNotify) func); } \ > >                      ^ > > /usr/include/glib-2.0/glib/gmacros.h:445:49: note: expanded from macro > '_GLIB_AUTOPTR_SLIST_FUNC_NAME' > > #define _GLIB_AUTOPTR_SLIST_FUNC_NAME(TypeName) > glib_slistautoptr_cleanup_##TypeName > >                                                 ^ > > :171:1: note: expanded from here > > glib_slistautoptr_cleanup_NBDExtentArray > >   > >   > > I see Eric’s patch 9bda600b083(“build: Silence clang warning on older > glib autoptr usage”) > > So I know there should be a ‘-Wno-unused-function’ in CFLAGS. It is > after ./configure: > >   > > CFLAGS            -g  -Wno-unused-function > > QEMU_CFLAGS       -I/usr/include/pixman-1  -Werror  -pthread > -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include > -fPIE -DPIE -m64 -mcx16 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 > -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wall -Wundef > -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common > -fwrapv -std=gnu99  -Wno-string-plus-int -Wno-typedef-redefinition > -Wno-initializer-overrides -Wexpansion-to-defined -Wendif-labels > -Wno-shift-negative-value -Wno-missing-include-dirs -Wempty-body > -Wnested-externs -Wformat-security -Wformat-y2k -Winit-self > -Wignored-qualifiers -Wold-style-definition -Wtype-limits > -fstack-protector-strong -I$(SRC_PATH)/capstone/include > >   > > However while I ‘make V=1’ I see the build nbd/serer.c using following > command: > > clang-8 -iquote /home/test/qemu/nbd -iquote nbd -iquote > /home/test/qemu/tcg/i386 -isystem /home/test/qemu/linux-headers -isystem > /home/test/qemu/linux-headers -iquote . -iquote /home/test/qemu -iquote > /home/test/qemu/accel/tcg -iquote /home/test/qemu/include -iquote > /home/test/qemu/disas/libvixl -I/usr/include/pixman-1  -Werror  -pthread > -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include > -fPIE -DPIE -m64 -mcx16 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 > -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wall -Wundef > -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common > -fwrapv -std=gnu99  -Wno-string-plus-int -Wno-typedef-redefinition > -Wno-initializer-overrides -Wexpansion-to-defined -Wendif-labels > -Wno-shift-negative-value -Wno-missing-include-dirs -Wempty-body > -Wnested-externs -Wformat-security -Wformat-y2k -Winit-self > -Wignored-qualifiers -Wold-style-definition -Wtype-limits > -fstack-protector-strong -I/home/test/qemu/capstone/include > -I/home/test/qemu/tests -I/home/test/qemu/tests/qtest -MMD -MP -MT > nbd/server.o -MF nbd/server.d -fsanitize=address,fuzzer-no-link  -c -o > nbd/server.o nbd/server.c > >   > > There’s no CFLAGS ‘-Wno-unused-function’. > >   > > So I want to know: > > 1.    Wha’t the relation of CFLAGS and QEMU_CFLAGS, it seems the CFLAGS > doesn’t work in this. > > 2.    Any hits to solve this? My env error or needs a patch? > >   > > I use following command in Ubuntu 18.04.1. > > CC=clang-8 CXX=clang++-8  ./configure  --target-list="i386-softmmu"  > --enable-debug --enable-debug  --enable-kvm --enable-fuzzing > >   > >   > > Thanks, > > Li Qiang >