Bug#1133472: ferret-vis: ftbfs with GCC-16

[Emanuele Rocca]

Package: src:ferret-vis
Version: 7.6.0-9
Severity: important
Tags: sid forky ftbfs
User: debian-gcc at lists.debian.org
Usertags: ftbfs-gcc-16

Hi,

ferret-vis fails to build in a test rebuild on at least amd64 and arm64 with
gcc-16/g++-16, but builds properly with gcc-15/g++-15. The severity of this
report will be raised before the forky release.

The full build log can be found at:
https://people.debian.org/~ema/gcc-16-rebuilds/output-1/ferret-vis_arm64.build.xz

The last lines of the build log are at the end of this report.

To build with GCC 16, either set CC=gcc-16 CXX=g++-16 explicitly,
or install the gcc, g++, gfortran, ... packages from experimental.

  apt-get -t=experimental install g++ 

Common build failures include unused (but set) variables, array subscripts
partly outside array bounds, and new/dropped symbols in Debian symbols files.
For other C/C++ related build failures see the porting guide at
http://gcc.gnu.org/gcc-16/porting_to.html

Please only close this issue after double-checking that the package can be
built correctly with GCC 16.

Please do not reassign this bug to another package. If a fix in another package
is required, then file a bug for the other package (or clone), and mark this
bug as blocked by the bug in the other package.

[...]


LOGNAME=sbuild
OLDPWD=/work/ema/archive-rebuild
PARALLEL_JOBSLOT0=13
PARALLEL_JOBSLOT=14
PARALLEL_PID=1532054
PARALLEL_REMOTE_TMPDIR=/tmp
PARALLEL_RSYNC_OPTS=-rlDzR
PARALLEL_SEQ=2590
PARALLEL_SSHHOST=:
PARALLEL_SSHLOGIN=:
PARALLEL_TMP=/tmp/parEWLvG
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
SHELL=/bin/sh
SSHPASS=
USER=sbuild
XDG_SESSION_CLASS=user

dpkg-buildpackage
-----------------

Command: dpkg-buildpackage --sanitize-env -us -uc -b
dpkg-buildpackage: info: source package ferret-vis
dpkg-buildpackage: info: source version 7.6.0-9
dpkg-buildpackage: info: source distribution unstable
dpkg-buildpackage: info: source changed by Alastair McKinstry <mckinstry at debian.org>
 dpkg-source --before-build .
dpkg-buildpackage: info: host architecture arm64
 debian/rules clean
dh clean --with elpa
   debian/rules override_dh_auto_clean
make[1]: Entering directory '/build/reproducible-path/ferret-vis-7.6.0'
# use system xpm.h, not supplied ones
rm -f fer/gui/xpm*.h
find . -type l  -delete
find . -name '*.o' -delete
find . -name '*.so' -delete
find external_functions -type l -exec rm {} \;
[ ! -f site_specific.mk ] || /usr/bin/make -C gksm2ps clean
[ ! -f fer/platform_specific_flags.mk.debian ]  || /usr/bin/make -C fer clean HOSTTYPE=debian 
rm -rf lib gksm2ps/gksm2ps fer/ferret_c*
make[1]: Leaving directory '/build/reproducible-path/ferret-vis-7.6.0'
   dh_clean
	rm -f debian/debhelper-build-stamp
	rm -rf debian/.debhelper/
	rm -f -- debian/ferret-vis.substvars debian/ferret-datasets.substvars debian/files
	rm -fr -- debian/ferret-vis/ debian/tmp/ debian/ferret-datasets/
	find .  \( \( \
		\( -path .\*/.git -o -path .\*/.svn -o -path .\*/.bzr -o -path .\*/.hg -o -path .\*/CVS -o -path .\*/.pc -o -path .\*/_darcs \) -prune -o -type f -a \
	        \( -name '#*#' -o -name '.*~' -o -name '*~' -o -name DEADJOE \
		 -o -name '*.orig' -o -name '*.rej' -o -name '*.bak' \
		 -o -name '.*.orig' -o -name .*.rej -o -name '.SUMS' \
		 -o -name TAGS -o \( -path '*/.deps/*' -a -name '*.P' \) \
		\) -exec rm -f {} + \) -o \
		\( -type d -a \( -name autom4te.cache -o -name __pycache__ \) -prune -exec rm -rf {} + \) \)
 debian/rules binary
dh binary --with elpa
   dh_update_autotools_config
   dh_autoreconf
   dh_auto_configure
   debian/rules override_dh_auto_build
make[1]: Entering directory '/build/reproducible-path/ferret-vis-7.6.0'
sed -e 's%@ARCH@%aarch64-linux-gnu%' \
	-e 's%@LIBDIR@%/usr/lib/aarch64-linux-gnu%' \
	-e 's%@INSTALLDIR@%/build/reproducible-path/ferret-vis-7.6.0/debian/tmp%' \
	< debian/site_specific.mk.in > site_specific.mk
cp debian/platform_specific.mk.debian.gfortran-16 platform_specific.mk.debian
cp: cannot stat 'debian/platform_specific.mk.debian.gfortran-16': No such file or directory
make[1]: *** [debian/rules:29: site_specific.mk] Error 1
make[1]: Leaving directory '/build/reproducible-path/ferret-vis-7.6.0'
make: *** [debian/rules:12: binary] Error 2
dpkg-buildpackage: error: debian/rules binary subprocess failed with exit status 2