[Pkg-xen-devel] Bug#777801: blktap: ftbfs with GCC-5

[Matthias Klose]

Package: src:blktap
Version: 2.0.90-3
Severity: normal
Tags: sid stretch
User: debian-gcc at lists.debian.org
Usertags: ftbfs-gcc-5

Please keep this issue open in the bug tracker for the package it
was filed for.  If a fix in another package is required, please
file a bug for the other package (or clone), and add a block in this
package. Please keep the issue open until the package can be built in
a follow-up test rebuild.

The package fails to build in a test rebuild on at least amd64 with
gcc-5/g++-5, but succeeds to build with gcc-4.9/g++-4.9. The
severity of this report may be raised before the stretch release.

The full build log can be found at:
http://people.debian.org/~doko/logs/gcc5-20150205/blktap_2.0.90-3_unstable_gcc5.log
The last lines of the build log are at the end of this report.

To build with GCC 5, either set CC=gcc-5 CXX=g++-5 explicitly,
or install the gcc, g++, gfortran, ... packages from experimental.

  apt-get -t experimental install g++ 

Common build failures are C11 as the default C mode, new warnings
resulting in build failures with -Werror turned on, or new/dropped
symbols in Debian symbols files.  For other C/C++ related build failures
see the porting guide at http://gcc.gnu.org/gcc-5/porting_to.html

[...]
td-rated.c:497:23: error: logical not is only applied to the left hand side of comparison [-Werror=logical-not-parentheses]
  WARN_ON(!!conn->need != waits);
                       ^
td-rated.c:71:10: note: in definition of macro 'WARN'
        ##_a, __func__, __LINE__)
          ^
td-rated.c:497:2: note: in expansion of macro 'WARN_ON'
  WARN_ON(!!conn->need != waits);
  ^
mv -f .deps/block-ram.Tpo .deps/block-ram.Plo
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -D_GNU_SOURCE -I../include -D_FORTIFY_SOURCE=2 -Wall -Werror -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -MT block-lcache.lo -MD -MP -MF .deps/block-lcache.Tpo -c block-lcache.c  -fPIC -DPIC -o block-lcache.o >/dev/null 2>&1
mv -f .deps/tapdisk-image.Tpo .deps/tapdisk-image.Plo
mv -f .deps/block-aio.Tpo .deps/block-aio.Plo
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -D_GNU_SOURCE -I../include -D_FORTIFY_SOURCE=2 -Wall -Werror -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -MT tapdisk-vbd.lo -MD -MP -MF .deps/tapdisk-vbd.Tpo -c tapdisk-vbd.c  -fPIC -DPIC -o tapdisk-vbd.o >/dev/null 2>&1
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -D_GNU_SOURCE -I../include -D_FORTIFY_SOURCE=2 -Wall -Werror -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -MT block-cache.lo -MD -MP -MF .deps/block-cache.Tpo -c block-cache.c  -fPIC -DPIC -o block-cache.o >/dev/null 2>&1
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -D_GNU_SOURCE -I../include -D_FORTIFY_SOURCE=2 -Wall -Werror -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -MT block-llcache.lo -MD -MP -MF .deps/block-llcache.Tpo -c block-llcache.c  -fPIC -DPIC -o block-llcache.o >/dev/null 2>&1
mv -f .deps/tapdisk-queue.Tpo .deps/tapdisk-queue.Plo
mv -f .deps/tapdisk-stream.Tpo .deps/tapdisk-stream.Po
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -D_GNU_SOURCE -I../include -D_FORTIFY_SOURCE=2 -Wall -Werror -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -MT block-valve.lo -MD -MP -MF .deps/block-valve.Tpo -c block-valve.c  -fPIC -DPIC -o block-valve.o >/dev/null 2>&1
mv -f .deps/td.Tpo .deps/td.Po
mv -f .deps/lock.Tpo .deps/lock.Plo
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -D_GNU_SOURCE -I../include -D_FORTIFY_SOURCE=2 -Wall -Werror -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -MT tapdisk-blktap.lo -MD -MP -MF .deps/tapdisk-blktap.Tpo -c tapdisk-blktap.c  -fPIC -DPIC -o tapdisk-blktap.o >/dev/null 2>&1
mv -f .deps/block-lcache.Tpo .deps/block-lcache.Plo
mv -f .deps/block-llcache.Tpo .deps/block-llcache.Plo
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -D_GNU_SOURCE -I../include -D_FORTIFY_SOURCE=2 -Wall -Werror -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -MT block-vindex.lo -MD -MP -MF .deps/block-vindex.Tpo -c block-vindex.c  -fPIC -DPIC -o block-vindex.o >/dev/null 2>&1
mv -f .deps/block-cache.Tpo .deps/block-cache.Plo
mv -f .deps/tapdisk-control.Tpo .deps/tapdisk-control.Plo
mv -f .deps/block-valve.Tpo .deps/block-valve.Plo
cc1: all warnings being treated as errors
make[4]: *** [td-rated.o] Error 1
make[4]: *** Waiting for unfinished jobs....
Makefile:544: recipe for target 'td-rated.o' failed
mv -f .deps/tapdisk-vbd.Tpo .deps/tapdisk-vbd.Plo
mv -f .deps/block-vindex.Tpo .deps/block-vindex.Plo
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -D_GNU_SOURCE -I../include -D_FORTIFY_SOURCE=2 -Wall -Werror -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -MT block-vhd.lo -MD -MP -MF .deps/block-vhd.Tpo -c block-vhd.c  -fPIC -DPIC -o block-vhd.o >/dev/null 2>&1
mv -f .deps/tapdisk-blktap.Tpo .deps/tapdisk-blktap.Plo
mv -f .deps/block-vhd.Tpo .deps/block-vhd.Plo
make[4]: Leaving directory '/«PKGBUILDDIR»/drivers'
make[3]: *** [all-recursive] Error 1
Makefile:384: recipe for target 'all-recursive' failed
make[3]: Leaving directory '/«PKGBUILDDIR»'
make[2]: *** [all] Error 2
Makefile:315: recipe for target 'all' failed
make[2]: Leaving directory '/«PKGBUILDDIR»'
make[1]: *** [override_dh_auto_build] Error 2
debian/rules:30: recipe for target 'override_dh_auto_build' failed
make[1]: Leaving directory '/«PKGBUILDDIR»'
make: *** [build-arch] Error 2
debian/rules:12: recipe for target 'build-arch' failed
dpkg-buildpackage: error: debian/rules build-arch gave error exit status 2