Comment 0 for bug 1823441

https://launchpadlibrarian.net/417924491/buildlog_ubuntu-disco-amd64.xen_4.9.2-0ubuntu2_BUILDING.txt.gz

gcc -m64 -DBUILD_ID -fno-strict-aliasing -std=gnu99 -Wall -Wstrict-prototypes -Wdeclaration-after-statement -Wno-unused-but-set-variable -Wno-unused-local-typedefs -O2 -fomit-frame-pointer -D__XEN_INTERFACE_VERSION__=__XEN_LATEST_INTERFACE_VERSION__ -MMD -MF .xen-lowmemd.o.d -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -Werror -include /<<PKGBUILDDIR>>/debian/build/build-utils_amd64/tools/misc/../../tools/config.h -I/<<PKGBUILDDIR>>/debian/build/build-utils_amd64/tools/misc/../../tools/libs/evtchn/include -I/<<PKGBUILDDIR>>/debian/build/build-utils_amd64/tools/misc/../../tools/include -I/<<PKGBUILDDIR>>/debian/build/build-utils_amd64/tools/misc/../../tools/libxc/include -I/<<PKGBUILDDIR>>/debian/build/build-utils_amd64/tools/misc/../../tools/libs/toollog/include -I/<<PKGBUILDDIR>>/debian/build/build-utils_amd64/tools/misc/../../tools/include -I/<<PKGBUILDDIR>>/debian/build/build-utils_amd64/tools/misc/../../tools/libs/foreignmemory/include -I/<<PKGBUILDDIR>>/debian/build/build-utils_amd64/tools/misc/../../tools/include -I/<<PKGBUILDDIR>>/debian/build/build-utils_amd64/tools/misc/../../tools/libs/devicemodel/include -I/<<PKGBUILDDIR>>/debian/build/build-utils_amd64/tools/misc/../../tools/include -I/<<PKGBUILDDIR>>/debian/build/build-utils_amd64/tools/misc/../../tools/include -D__XEN_TOOLS__ -I/<<PKGBUILDDIR>>/debian/build/build-utils_amd64/tools/misc/../../tools/include -I/<<PKGBUILDDIR>>/debian/build/build-utils_amd64/tools/misc/../../tools/xenstore/include -I/<<PKGBUILDDIR>>/debian/build/build-utils_amd64/tools/misc/../../tools/include -c -o xen-lowmemd.o xen-lowmemd.c
xen-lowmemd.c: In function ‘handle_low_mem’:
xen-lowmemd.c:80:55: error: ‘%s’ directive output may be truncated writing up to 511 bytes into a region of size 489 [-Werror=format-truncation=]
         snprintf(error, BUFSZ,"Failed to write target %s to xenstore", data);
                                                       ^~ ~~~~
In file included from /usr/include/stdio.h:867,
                 from xen-lowmemd.c:6:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:67:10: note: ‘__builtin___snprintf_chk’ output between 36 and 547 bytes into a destination of size 512
   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        __bos (__s), __fmt, __va_arg_pack ());
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
make[5]: *** [/<<PKGBUILDDIR>>/debian/build/build-utils_amd64/tools/misc/../../tools/Rules.mk:220: xen-lowmemd.o] Error 1
make[5]: Leaving directory '/<<PKGBUILDDIR>>/debian/build/build-utils_amd64/tools/misc'
make[4]: *** [/<<PKGBUILDDIR>>/debian/build/build-utils_amd64/tools/../tools/Rules.mk:244: subdir-all-misc] Error 2
make[4]: Leaving directory '/<<PKGBUILDDIR>>/debian/build/build-utils_amd64/tools'
make[3]: *** [/<<PKGBUILDDIR>>/debian/build/build-utils_amd64/tools/../tools/Rules.mk:239: subdirs-all] Error 2
make[3]: Leaving directory '/<<PKGBUILDDIR>>/debian/build/build-utils_amd64/tools'
make[2]: *** [debian/rules.real:111: debian/stamps/build-utils_amd64] Error 2
make[2]: Leaving directory '/<<PKGBUILDDIR>>'
make[1]: *** [debian/rules.gen:66: build-arch_amd64_real] Error 2
make[1]: Leaving directory '/<<PKGBUILDDIR>>'