| Message ID | 20220311221634.58288-1-muriloo@linux.ibm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v2] block-qdict: Fix -Werror=maybe-uninitialized build failure | expand |
Murilo Opsfelder Araujo <muriloo@linux.ibm.com> writes: > Building QEMU on Fedora 37 (Rawhide Prerelease) ppc64le failed with the > following error: > > $ ../configure --prefix=/usr/local/qemu-disabletcg --target-list=ppc-softmmu,ppc64-softmmu --disable-tcg --disable-linux-user > ... > $ make -j$(nproc) > ... > FAILED: libqemuutil.a.p/qobject_block-qdict.c.o > cc -m64 -mlittle-endian -Ilibqemuutil.a.p -I. -I.. -Isubprojects/libvhost-user -I../subprojects/libvhost-user -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/sysprof-4 -I/usr/include/lib > mount -I/usr/include/blkid -I/usr/include/gio-unix-2.0 -I/usr/include/p11-kit-1 -I/usr/include/pixman-1 -fdiagnostics-color=auto -Wall -Winvalid-pch -Werror -std=gnu11 -O2 -g -isystem /root/qemu/linux-headers -isystem linux-headers -iquote > . -iquote /root/qemu -iquote /root/qemu/include -iquote /root/qemu/disas/libvixl -pthread -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite > -strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -Wold-style-declaration -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-label > s -Wexpansion-to-defined -Wimplicit-fallthrough=2 -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-psabi -fstack-protector-strong -fPIE -MD -MQ libqemuutil.a.p/qobject_block-qdict.c.o -MF libqemuutil.a.p/qobject_block-qdict.c.o.d - > o libqemuutil.a.p/qobject_block-qdict.c.o -c ../qobject/block-qdict.c > In file included from /root/qemu/include/qapi/qmp/qdict.h:16, > from /root/qemu/include/block/qdict.h:13, > from ../qobject/block-qdict.c:11: > /root/qemu/include/qapi/qmp/qobject.h: In function ‘qdict_array_split’: > /root/qemu/include/qapi/qmp/qobject.h:49:17: error: ‘subqdict’ may be used uninitialized [-Werror=maybe-uninitialized] > 49 | typeof(obj) _obj = (obj); \ > | ^~~~ > ../qobject/block-qdict.c:227:16: note: ‘subqdict’ declared here > 227 | QDict *subqdict; > | ^~~~~~~~ > cc1: all warnings being treated as errors > > Fix build failure by expanding the ternary operation. > Tested with `make check-unit` (the check-block-qdict test passed). > > Signed-off-by: Murilo Opsfelder Araujo <muriloo@linux.ibm.com> > Cc: Kevin Wolf <kwolf@redhat.com> > Cc: Hanna Reitz <hreitz@redhat.com> > Cc: Markus Armbruster <armbru@redhat.com> > --- > v1: https://lists.nongnu.org/archive/html/qemu-devel/2022-03/msg03224.html > > qobject/block-qdict.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/qobject/block-qdict.c b/qobject/block-qdict.c > index 1487cc5dd8..4a83bda2c3 100644 > --- a/qobject/block-qdict.c > +++ b/qobject/block-qdict.c > @@ -251,12 +251,12 @@ void qdict_array_split(QDict *src, QList **dst) > if (is_subqdict) { > qdict_extract_subqdict(src, &subqdict, prefix); > assert(qdict_size(subqdict) > 0); > + qlist_append_obj(*dst, QOBJECT(subqdict)); > } else { > qobject_ref(subqobj); > qdict_del(src, indexstr); > + qlist_append_obj(*dst, subqobj); > } > - > - qlist_append_obj(*dst, subqobj ?: QOBJECT(subqdict)); > } > } Reviewed-by: Markus Armbruster <armbru@redhat.com>
On 11/3/22 23:16, Murilo Opsfelder Araujo wrote: > Building QEMU on Fedora 37 (Rawhide Prerelease) ppc64le failed with the > following error: > > $ ../configure --prefix=/usr/local/qemu-disabletcg --target-list=ppc-softmmu,ppc64-softmmu --disable-tcg --disable-linux-user > ... > $ make -j$(nproc) > ... > FAILED: libqemuutil.a.p/qobject_block-qdict.c.o This part >>> > cc -m64 -mlittle-endian -Ilibqemuutil.a.p -I. -I.. -Isubprojects/libvhost-user -I../subprojects/libvhost-user -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/sysprof-4 -I/usr/include/lib > mount -I/usr/include/blkid -I/usr/include/gio-unix-2.0 -I/usr/include/p11-kit-1 -I/usr/include/pixman-1 -fdiagnostics-color=auto -Wall -Winvalid-pch -Werror -std=gnu11 -O2 -g -isystem /root/qemu/linux-headers -isystem linux-headers -iquote > . -iquote /root/qemu -iquote /root/qemu/include -iquote /root/qemu/disas/libvixl -pthread -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite > -strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -Wold-style-declaration -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-label > s -Wexpansion-to-defined -Wimplicit-fallthrough=2 -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-psabi -fstack-protector-strong -fPIE -MD -MQ libqemuutil.a.p/qobject_block-qdict.c.o -MF libqemuutil.a.p/qobject_block-qdict.c.o.d - > o libqemuutil.a.p/qobject_block-qdict.c.o -c ../qobject/block-qdict.c <<< is noise (doesn't provide any value) and could be stripped. > In file included from /root/qemu/include/qapi/qmp/qdict.h:16, > from /root/qemu/include/block/qdict.h:13, > from ../qobject/block-qdict.c:11: > /root/qemu/include/qapi/qmp/qobject.h: In function ‘qdict_array_split’: > /root/qemu/include/qapi/qmp/qobject.h:49:17: error: ‘subqdict’ may be used uninitialized [-Werror=maybe-uninitialized] > 49 | typeof(obj) _obj = (obj); \ > | ^~~~ > ../qobject/block-qdict.c:227:16: note: ‘subqdict’ declared here > 227 | QDict *subqdict; > | ^~~~~~~~ > cc1: all warnings being treated as errors > > Fix build failure by expanding the ternary operation. > Tested with `make check-unit` (the check-block-qdict test passed). > > Signed-off-by: Murilo Opsfelder Araujo <muriloo@linux.ibm.com> > Cc: Kevin Wolf <kwolf@redhat.com> > Cc: Hanna Reitz <hreitz@redhat.com> > Cc: Markus Armbruster <armbru@redhat.com> > --- > v1: https://lists.nongnu.org/archive/html/qemu-devel/2022-03/msg03224.html > > qobject/block-qdict.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/qobject/block-qdict.c b/qobject/block-qdict.c > index 1487cc5dd8..4a83bda2c3 100644 > --- a/qobject/block-qdict.c > +++ b/qobject/block-qdict.c > @@ -251,12 +251,12 @@ void qdict_array_split(QDict *src, QList **dst) > if (is_subqdict) { > qdict_extract_subqdict(src, &subqdict, prefix); > assert(qdict_size(subqdict) > 0); > + qlist_append_obj(*dst, QOBJECT(subqdict)); > } else { > qobject_ref(subqobj); > qdict_del(src, indexstr); > + qlist_append_obj(*dst, subqobj); > } > - > - qlist_append_obj(*dst, subqobj ?: QOBJECT(subqdict)); > } > } >
Hi, Philippe. On Monday, March 14, 2022 10:47:11 AM -03 Philippe Mathieu-Daudé wrote: > On 11/3/22 23:16, Murilo Opsfelder Araujo wrote: > > Building QEMU on Fedora 37 (Rawhide Prerelease) ppc64le failed with the > > following error: > > > > $ ../configure --prefix=/usr/local/qemu-disabletcg --target-list=ppc-softmmu,ppc64-softmmu --disable-tcg --disable-linux-user > > ... > > $ make -j$(nproc) > > ... > > FAILED: libqemuutil.a.p/qobject_block-qdict.c.o > > This part >>> > > > cc -m64 -mlittle-endian -Ilibqemuutil.a.p -I. -I.. -Isubprojects/libvhost-user -I../subprojects/libvhost-user -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/sysprof-4 -I/usr/include/lib > > mount -I/usr/include/blkid -I/usr/include/gio-unix-2.0 -I/usr/include/p11-kit-1 -I/usr/include/pixman-1 -fdiagnostics-color=auto -Wall -Winvalid-pch -Werror -std=gnu11 -O2 -g -isystem /root/qemu/linux-headers -isystem linux-headers -iquote > > . -iquote /root/qemu -iquote /root/qemu/include -iquote /root/qemu/disas/libvixl -pthread -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite > > -strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -Wold-style-declaration -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-label > > s -Wexpansion-to-defined -Wimplicit-fallthrough=2 -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-psabi -fstack-protector-strong -fPIE -MD -MQ libqemuutil.a.p/qobject_block-qdict.c.o -MF libqemuutil.a.p/qobject_block-qdict.c.o.d - > > o libqemuutil.a.p/qobject_block-qdict.c.o -c ../qobject/block-qdict.c > > <<< is noise (doesn't provide any value) and could be stripped. Is this something the committer/maintainer could edit when applying the commit or do you need I resend the v3? Cheers! > > > In file included from /root/qemu/include/qapi/qmp/qdict.h:16, > > from /root/qemu/include/block/qdict.h:13, > > from ../qobject/block-qdict.c:11: > > /root/qemu/include/qapi/qmp/qobject.h: In function âqdict_array_splitâ: > > /root/qemu/include/qapi/qmp/qobject.h:49:17: error: âsubqdictâ may be used uninitialized [-Werror=maybe-uninitialized] > > 49 | typeof(obj) _obj = (obj); \ > > | ^~~~ > > ../qobject/block-qdict.c:227:16: note: âsubqdictâ declared here > > 227 | QDict *subqdict; > > | ^~~~~~~~ > > cc1: all warnings being treated as errors > > > > Fix build failure by expanding the ternary operation. > > Tested with `make check-unit` (the check-block-qdict test passed). > > > > Signed-off-by: Murilo Opsfelder Araujo <muriloo@linux.ibm.com> > > Cc: Kevin Wolf <kwolf@redhat.com> > > Cc: Hanna Reitz <hreitz@redhat.com> > > Cc: Markus Armbruster <armbru@redhat.com> > > --- > > v1: https://lists.nongnu.org/archive/html/qemu-devel/2022-03/msg03224.html > > > > qobject/block-qdict.c | 4 ++-- > > 1 file changed, 2 insertions(+), 2 deletions(-) > > > > diff --git a/qobject/block-qdict.c b/qobject/block-qdict.c > > index 1487cc5dd8..4a83bda2c3 100644 > > --- a/qobject/block-qdict.c > > +++ b/qobject/block-qdict.c > > @@ -251,12 +251,12 @@ void qdict_array_split(QDict *src, QList **dst) > > if (is_subqdict) { > > qdict_extract_subqdict(src, &subqdict, prefix); > > assert(qdict_size(subqdict) > 0); > > + qlist_append_obj(*dst, QOBJECT(subqdict)); > > } else { > > qobject_ref(subqobj); > > qdict_del(src, indexstr); > > + qlist_append_obj(*dst, subqobj); > > } > > - > > - qlist_append_obj(*dst, subqobj ?: QOBJECT(subqdict)); > > } > > } > > > > > > -- Murilo
Murilo Opsfelder Araújo <muriloo@linux.ibm.com> writes: > Hi, Philippe. > > On Monday, March 14, 2022 10:47:11 AM -03 Philippe Mathieu-Daudé wrote: >> On 11/3/22 23:16, Murilo Opsfelder Araujo wrote: >> > Building QEMU on Fedora 37 (Rawhide Prerelease) ppc64le failed with the >> > following error: >> > >> > $ ../configure --prefix=/usr/local/qemu-disabletcg --target-list=ppc-softmmu,ppc64-softmmu --disable-tcg --disable-linux-user >> > ... >> > $ make -j$(nproc) >> > ... >> > FAILED: libqemuutil.a.p/qobject_block-qdict.c.o >> >> This part >>> >> >> > cc -m64 -mlittle-endian -Ilibqemuutil.a.p -I. -I.. -Isubprojects/libvhost-user -I../subprojects/libvhost-user -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/sysprof-4 -I/usr/include/lib >> > mount -I/usr/include/blkid -I/usr/include/gio-unix-2.0 -I/usr/include/p11-kit-1 -I/usr/include/pixman-1 -fdiagnostics-color=auto -Wall -Winvalid-pch -Werror -std=gnu11 -O2 -g -isystem /root/qemu/linux-headers -isystem linux-headers -iquote >> > . -iquote /root/qemu -iquote /root/qemu/include -iquote /root/qemu/disas/libvixl -pthread -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite >> > -strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -Wold-style-declaration -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-label >> > s -Wexpansion-to-defined -Wimplicit-fallthrough=2 -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-psabi -fstack-protector-strong -fPIE -MD -MQ libqemuutil.a.p/qobject_block-qdict.c.o -MF libqemuutil.a.p/qobject_block-qdict.c.o.d - >> > o libqemuutil.a.p/qobject_block-qdict.c.o -c ../qobject/block-qdict.c >> >> <<< is noise (doesn't provide any value) and could be stripped. > > Is this something the committer/maintainer could edit when applying the commit > or do you need I resend the v3? > > Cheers! I'll take care of it unless Kevin or Hanna beat me to the punch.
On Wed, Mar 16, 2022 at 3:52 PM Markus Armbruster <armbru@redhat.com> wrote: > > Murilo Opsfelder Araújo <muriloo@linux.ibm.com> writes: > > > Hi, Philippe. > > > > On Monday, March 14, 2022 10:47:11 AM -03 Philippe Mathieu-Daudé wrote: > >> On 11/3/22 23:16, Murilo Opsfelder Araujo wrote: > >> > Building QEMU on Fedora 37 (Rawhide Prerelease) ppc64le failed with the > >> > following error: > >> > > >> > $ ../configure --prefix=/usr/local/qemu-disabletcg --target-list=ppc-softmmu,ppc64-softmmu --disable-tcg --disable-linux-user > >> > ... > >> > $ make -j$(nproc) > >> > ... > >> > FAILED: libqemuutil.a.p/qobject_block-qdict.c.o > >> > >> This part >>> > >> > >> > cc -m64 -mlittle-endian -Ilibqemuutil.a.p -I. -I.. -Isubprojects/libvhost-user -I../subprojects/libvhost-user -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/sysprof-4 -I/usr/include/lib > >> > mount -I/usr/include/blkid -I/usr/include/gio-unix-2.0 -I/usr/include/p11-kit-1 -I/usr/include/pixman-1 -fdiagnostics-color=auto -Wall -Winvalid-pch -Werror -std=gnu11 -O2 -g -isystem /root/qemu/linux-headers -isystem linux-headers -iquote > >> > . -iquote /root/qemu -iquote /root/qemu/include -iquote /root/qemu/disas/libvixl -pthread -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite > >> > -strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -Wold-style-declaration -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-label > >> > s -Wexpansion-to-defined -Wimplicit-fallthrough=2 -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-psabi -fstack-protector-strong -fPIE -MD -MQ libqemuutil.a.p/qobject_block-qdict.c.o -MF libqemuutil.a.p/qobject_block-qdict.c.o.d - > >> > o libqemuutil.a.p/qobject_block-qdict.c.o -c ../qobject/block-qdict.c > >> > >> <<< is noise (doesn't provide any value) and could be stripped. > > > > Is this something the committer/maintainer could edit when applying the commit > > or do you need I resend the v3? > > > > Cheers! > > I'll take care of it unless Kevin or Hanna beat me to the punch. Thanks! Same error on latest Debian: include/qapi/qmp/qobject.h: In function 'qdict_array_split': include/qapi/qmp/qobject.h:49:17: error: 'subqdict' may be used uninitialized [-Werror=maybe-uninitialized] 49 | typeof(obj) _obj = (obj); \ | ^~~~ ../qobject/block-qdict.c:227:16: note: 'subqdict' declared here 227 | QDict *subqdict; | ^~~~~~~~ cc1: all warnings being treated as errors FAILED: libqemuutil.a.p/qobject_block-qdict.c.o Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
diff --git a/qobject/block-qdict.c b/qobject/block-qdict.c index 1487cc5dd8..4a83bda2c3 100644 --- a/qobject/block-qdict.c +++ b/qobject/block-qdict.c @@ -251,12 +251,12 @@ void qdict_array_split(QDict *src, QList **dst) if (is_subqdict) { qdict_extract_subqdict(src, &subqdict, prefix); assert(qdict_size(subqdict) > 0); + qlist_append_obj(*dst, QOBJECT(subqdict)); } else { qobject_ref(subqobj); qdict_del(src, indexstr); + qlist_append_obj(*dst, subqobj); } - - qlist_append_obj(*dst, subqobj ?: QOBJECT(subqdict)); } }
Building QEMU on Fedora 37 (Rawhide Prerelease) ppc64le failed with the following error: $ ../configure --prefix=/usr/local/qemu-disabletcg --target-list=ppc-softmmu,ppc64-softmmu --disable-tcg --disable-linux-user ... $ make -j$(nproc) ... FAILED: libqemuutil.a.p/qobject_block-qdict.c.o cc -m64 -mlittle-endian -Ilibqemuutil.a.p -I. -I.. -Isubprojects/libvhost-user -I../subprojects/libvhost-user -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/sysprof-4 -I/usr/include/lib mount -I/usr/include/blkid -I/usr/include/gio-unix-2.0 -I/usr/include/p11-kit-1 -I/usr/include/pixman-1 -fdiagnostics-color=auto -Wall -Winvalid-pch -Werror -std=gnu11 -O2 -g -isystem /root/qemu/linux-headers -isystem linux-headers -iquote . -iquote /root/qemu -iquote /root/qemu/include -iquote /root/qemu/disas/libvixl -pthread -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite -strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -Wold-style-declaration -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-label s -Wexpansion-to-defined -Wimplicit-fallthrough=2 -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-psabi -fstack-protector-strong -fPIE -MD -MQ libqemuutil.a.p/qobject_block-qdict.c.o -MF libqemuutil.a.p/qobject_block-qdict.c.o.d - o libqemuutil.a.p/qobject_block-qdict.c.o -c ../qobject/block-qdict.c In file included from /root/qemu/include/qapi/qmp/qdict.h:16, from /root/qemu/include/block/qdict.h:13, from ../qobject/block-qdict.c:11: /root/qemu/include/qapi/qmp/qobject.h: In function ‘qdict_array_split’: /root/qemu/include/qapi/qmp/qobject.h:49:17: error: ‘subqdict’ may be used uninitialized [-Werror=maybe-uninitialized] 49 | typeof(obj) _obj = (obj); \ | ^~~~ ../qobject/block-qdict.c:227:16: note: ‘subqdict’ declared here 227 | QDict *subqdict; | ^~~~~~~~ cc1: all warnings being treated as errors Fix build failure by expanding the ternary operation. Tested with `make check-unit` (the check-block-qdict test passed). Signed-off-by: Murilo Opsfelder Araujo <muriloo@linux.ibm.com> Cc: Kevin Wolf <kwolf@redhat.com> Cc: Hanna Reitz <hreitz@redhat.com> Cc: Markus Armbruster <armbru@redhat.com> --- v1: https://lists.nongnu.org/archive/html/qemu-devel/2022-03/msg03224.html qobject/block-qdict.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)