Bug#925647: casync: ftbfs with GCC-9

[Matthias Klose]

Package: src:casync
Version: 2+20180321-2.1
Severity: normal
Tags: sid bullseye
User: debian-gcc at lists.debian.org
Usertags: ftbfs-gcc-9

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-9/g++-9, but succeeds to build with gcc-8/g++-8. The
severity of this report will be raised before the bullseye release,
so nothing has to be done for the buster release.

The full build log can be found at:
http://people.debian.org/~doko/logs/gcc9-20190321/casync_2+20180321-2.1_unstable_gcc9.log
The last lines of the build log are at the end of this report.

To build with GCC 9, either set CC=gcc-9 CXX=g++-9 explicitly,
or install the gcc, g++, gfortran, ... packages from experimental.

  apt-get -t=experimental install g++ 

Common build failures are 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-9/porting_to.html

GCC 9 also passes the linker option --as-needed by default; typical
build issues are passing libraries before object files to the linker,
or underlinking of convenience libraries built from the same source.

[...]
	INNER <miepf> ANCHORED=YES DIRECTORY-ONLY=YES
		POSITIVE <miepf> ANCHORED=YES DIRECTORY-ONLY=NO
-------

16/22 test-caorigin                           OK       0.00 s 

--- command ---
/<<BUILDDIR>>/casync-2+20180321/obj-x86_64-linux-gnu/test-caorigin
--- stderr ---
foo+e0:22 → foo+p0:132 → quux+e0:33
foo+e1:21 → foo+p0:132 → quux+e0:33
foo+e21:1 → foo+p0:132 → quux+e0:33
foo+p1:131 → quux+e0:33
foo+p1:131 → quux+e0:33 → foo+p1:131 → quux+e0:33
foo+p0:55 → foo+p0:132
foo+p1:131 → quux+e0:33 → foo+p1:131 → quux+e0:33 → foo+p0:55 → foo+p0:132
foo+p1:131 → quux+e0:33 → foo+p1:131 → quux+e0:33 → foo+p0:55 → foo+p0:132 → foo+p0:55 → foo+p0:1
-------

17/22 test-casync                             OK       0.57 s 

--- command ---
/<<BUILDDIR>>/casync-2+20180321/obj-x86_64-linux-gnu/test-casync
--- stdout ---
767b24e6ba3f14a3908fd3cfa800579fabe277b3bbdc404445c464d06bd31ca8
767b24e6ba3f14a3908fd3cfa800579fabe277b3bbdc404445c464d06bd31ca8
-------

18/22 test-cautil                             OK       0.00 s 

--- command ---
/<<BUILDDIR>>/casync-2+20180321/obj-x86_64-linux-gnu/test-cautil
-------

19/22 test-feature-flags                      OK       0.00 s 

--- command ---
/<<BUILDDIR>>/casync-2+20180321/obj-x86_64-linux-gnu/test-feature-flags
-------

20/22 test-util                               OK       0.00 s 

--- command ---
/<<BUILDDIR>>/casync-2+20180321/obj-x86_64-linux-gnu/test-util
-------

21/22 check-help-casync                       OK       0.02 s 

--- command ---
/<<BUILDDIR>>/casync-2+20180321/test/meson-check-help.sh /<<BUILDDIR>>/casync-2+20180321/obj-x86_64-linux-gnu/casync
-------

22/22 check-help-casync-http                  OK       0.02 s 

--- command ---
/<<BUILDDIR>>/casync-2+20180321/test/meson-check-help.sh /<<BUILDDIR>>/casync-2+20180321/obj-x86_64-linux-gnu/casync-http
-------


Ok:                   16
Expected Fail:         0
Fail:                  6
Unexpected Pass:       0
Skipped:               0
Timeout:               0
dh_auto_test: cd obj-x86_64-linux-gnu && LC_ALL=C.UTF-8 MESON_TESTTHREADS=1 ninja test returned exit code 1
make[1]: *** [debian/rules:11: override_dh_auto_test] Error 255
make[1]: Leaving directory '/<<BUILDDIR>>/casync-2+20180321'
make: *** [debian/rules:8: build-arch] Error 2
dpkg-buildpackage: error: debian/rules build-arch subprocess returned exit status 2