Bug#925769: lix: ftbfs with GCC-9

[Matthias Klose]

Package: src:lix
Version: 0.9.24-1
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/lix_0.9.24-1_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.

[...]

Unpack source
-------------

gpgv: unknown type of key resource 'trustedkeys.kbx'
gpgv: keyblock resource '/sbuild-nonexistent/.gnupg/trustedkeys.kbx': General error
gpgv: Signature made Fri Jan  4 13:52:12 2019 UTC
gpgv:                using RSA key 9236557B170C87F8821C0AC3C1E0D92E986F7C7E
gpgv: Can't check signature: No public key
dpkg-source: warning: failed to verify signature on ./lix_0.9.24-1.dsc
dpkg-source: info: extracting lix in /<<PKGBUILDDIR>>
dpkg-source: info: unpacking lix_0.9.24.orig.tar.gz
dpkg-source: info: unpacking lix_0.9.24-1.debian.tar.xz
dpkg-source: info: using patch list from debian/patches/series
dpkg-source: info: applying dub-i-dub-i-dub-dub-dub

Check disk space
----------------

Sufficient free space for build

User Environment
----------------

APT_CONFIG=/var/lib/sbuild/apt.conf
HOME=/sbuild-nonexistent
LANG=en_US.UTF-8
LC_ALL=POSIX
LOGNAME=user42
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
SCHROOT_ALIAS_NAME=unstable
SCHROOT_CHROOT_NAME=sid-amd64-sbuild
SCHROOT_COMMAND=env
SCHROOT_GID=1001
SCHROOT_GROUP=user42
SCHROOT_SESSION_ID=sid-amd64-sbuild-98817003-8ea6-4951-89e5-0738a93156aa
SCHROOT_UID=1001
SCHROOT_USER=user42
SHELL=/bin/sh
USER=user42

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

dpkg-buildpackage: info: source package lix
dpkg-buildpackage: info: source version 0.9.24-1
dpkg-buildpackage: info: source distribution unstable
dpkg-buildpackage: info: source changed by Gürkan Myczko <gurkan at phys.ethz.ch>
 dpkg-source --before-build .
dpkg-buildpackage: info: host architecture amd64
 fakeroot debian/rules clean
dh clean
   dh_clean
 debian/rules build-arch
dh build-arch
   dh_update_autotools_config -a
   dh_autoreconf -a
   debian/rules override_dh_auto_configure
make[1]: Entering directory '/<<PKGBUILDDIR>>'
mkdir -p .dub/packages
cp -r debian/links/* .dub/packages/
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
   debian/rules override_dh_auto_build
make[1]: Entering directory '/<<PKGBUILDDIR>>'
dub build -f -b releaseXDG --cache=local --compiler=ldc2
dub: symbol lookup error: dub: undefined symbol: _D4core8internal4hash9bytesHashFNaNbNiPxvmmZm
make[1]: *** [debian/rules:23: override_dh_auto_build] Error 127
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
make: *** [debian/rules:16: build-arch] Error 2
dpkg-buildpackage: error: debian/rules build-arch subprocess returned exit status 2