Bug#897801: linbox: ftbfs with GCC-8

[Matthias Klose]

Package: src:linbox
Version: 1.4.2-5
Severity: normal
Tags: sid buster
User: debian-gcc at lists.debian.org
Usertags: ftbfs-gcc-8

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-8/g++-8, but succeeds to build with gcc-7/g++-7. The
severity of this report will be raised before the buster release.

The full build log can be found at:
http://aws-logs.debian.net/2018/05/01/gcc8/linbox_1.4.2-5_unstable_gcc8.log.gz
The last lines of the build log are at the end of this report.

To build with GCC 8, either set CC=gcc-8 CXX=g++-8 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-8/porting_to.html

[...]
make[4]: Entering directory '/<<PKGBUILDDIR>>/linbox/randiter'
/bin/bash ../../libtool  --tag=CXX   --mode=link g++  -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security  -Wl,-z,relro -Wl,-z,now -fopenmp -o libranditer.la  mersenne-twister.lo  
libtool: link: ar cru .libs/libranditer.a .libs/mersenne-twister.o 
ar: `u' modifier ignored since `D' is the default (see `U')
libtool: link: ranlib .libs/libranditer.a
libtool: link: ( cd ".libs" && rm -f "libranditer.la" && ln -s "../libranditer.la" "libranditer.la" )
make[4]: Leaving directory '/<<PKGBUILDDIR>>/linbox/randiter'
Making all in vector
make[4]: Nothing to be done for 'all'.
Making all in matrix
Making all in sparsematrix
make[5]: Nothing to be done for 'all'.
Making all in densematrix
make[5]: Nothing to be done for 'all'.
Making all in matrixdomain
make[5]: Nothing to be done for 'all'.
Making all in sliced3
make[5]: Nothing to be done for 'all'.
make[5]: Nothing to be done for 'all-am'.
Making all in blackbox
make[4]: Nothing to be done for 'all'.
Making all in algorithms
Making all in gauss
make[5]: Nothing to be done for 'all'.
Making all in opencl-kernels
make[5]: Nothing to be done for 'all'.
Making all in matrix-blas3
make[5]: Nothing to be done for 'all'.
Making all in polynomial-matrix
make[5]: Nothing to be done for 'all'.
make[5]: Entering directory '/<<PKGBUILDDIR>>/linbox/algorithms'
/bin/bash ../../libtool  --tag=CXX   --mode=compile g++ -DHAVE_CONFIG_H -I. -I../..  -I../../linbox -D__FFLASFFPACK_HAVE_CBLAS -fopenmp -std=gnu++11      -O2   -Wall -g -DNDEBUG -U_LB_DEBUG -Wdate-time -D_FORTIFY_SOURCE=2  -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -c -o diophantine-solver.lo diophantine-solver.C
libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I../.. -I../../linbox -D__FFLASFFPACK_HAVE_CBLAS -fopenmp -std=gnu++11 -O2 -Wall -g -DNDEBUG -U_LB_DEBUG -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -c diophantine-solver.C  -fPIC -DPIC -o .libs/diophantine-solver.o
In file included from ../../linbox/matrix/densematrix/blas-matrix.h:54,
                 from ../../linbox/matrix/dense-matrix.h:79,
                 from ../../linbox/algorithms/rational-solver.h:43,
                 from ../../linbox/algorithms/diophantine-solver.h:29,
                 from diophantine-solver.C:26:
../../linbox/matrix/densematrix/blas-transposed-matrix.h:74:8: error: too many template-parameter-lists
  class TransposedBlasMatrix< TransposedBlasMatrix< Matrix > > : public Matrix {
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
make[5]: *** [Makefile:654: diophantine-solver.lo] Error 1
make[5]: Leaving directory '/<<PKGBUILDDIR>>/linbox/algorithms'
make[4]: *** [Makefile:690: all-recursive] Error 1
make[3]: *** [Makefile:616: all-recursive] Error 1
make[2]: *** [Makefile:593: all-recursive] Error 1
make[1]: *** [Makefile:465: all] Error 2
dh_auto_build: make -j8 -Oline returned exit code 2
make: *** [debian/rules:60: build-arch] Error 25
dpkg-buildpackage: error: debian/rules build-arch subprocess returned exit status 2