Bug#957155: dune-grid: ftbfs with GCC-10

[Matthias Klose]

Package: src:dune-grid
Version: 2.6.0-5
Severity: normal
Tags: sid bullseye
User: debian-gcc at lists.debian.org
Usertags: ftbfs-gcc-10

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-10/g++-10, but succeeds to build with gcc-9/g++-9. 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/gcc10-20200225/dune-grid_2.6.0-5_unstable_gcc10.log
The last lines of the build log are at the end of this report.

To build with GCC 10, either set CC=gcc-10 CXX=g++-10 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-10/porting_to.html

[...]
      Start 61: vertexordertest
61/61 Test #61: vertexordertest .......................................   Passed    0.32 sec

98% tests passed, 1 tests failed out of 61

Total Test time (real) =  47.08 sec

The following tests did not run:
	  6 - printgridtest (Skipped)
	 11 - amirameshtest (Skipped)
	 34 - test-loadbalancing (Skipped)

The following tests FAILED:
	 23 - test-geogrid-yaspgrid (Failed)
Errors while running CTest
======================================================================
Name:      printgridtest
FullName:  ./dune/grid/io/file/test/printgridtest
Status:    NOTRUN
Output:
           sh: 1: gnuplot: not found
           GNUplot was not found.

======================================================================
Name:      amirameshtest
FullName:  ./dune/grid/io/file/test/amirameshtest
Status:    NOTRUN
Output:
           This test was skipped because it failed the following CMake Conditions:
             AMIRAMESH_FOUND

======================================================================
Name:      test-geogrid-yaspgrid
FullName:  ./dune/grid/test/test-geogrid-yaspgrid
Status:    FAILED
Output:
           Checking grid...
           0061000000000000
           0061000000000000
           Lifetime / consistency check for entities, codim 2
           WARNING! Requested check of first 32 entities, but grid view only contains 25 entities
           Lifetime / consistency check for entities, codim 1
           Lifetime / consistency check for entities, codim 0
           WARNING! Requested check of first 32 entities, but grid view only contains 16 entities
           Intersection Lifetime / consistency check
           WARNING! Requested check of intersections for first 32 elements, but grid view only contains 16 elements
           Lifetime / consistency check for entities, codim 2
           WARNING! Requested check of first 32 entities, but grid view only contains 25 entities
           Lifetime / consistency check for entities, codim 1
           Lifetime / consistency check for entities, codim 0
           WARNING! Requested check of first 32 entities, but grid view only contains 16 entities
           Intersection Lifetime / consistency check
           WARNING! Requested check of intersections for first 32 elements, but grid view only contains 16 elements
           Checking geometry... 
           Checking geometry in father...
           Checking intersections...
           Dune::GridError [checkIntersectionIterator:/<<PKGBUILDDIR>>/dune/grid/test/checkintersectionit.hh:518]: Could not find inside entity through intersection iterator on outside entity.

======================================================================
Name:      test-loadbalancing
FullName:  ./dune/grid/test/test-loadbalancing
Status:    NOTRUN
Output:
           This test requires ParMetis.
           Note that the emulation layer provided by scotch is not sufficient.

make[1]: *** [/usr/share/dune/dune-debian.mk:21: override_dh_auto_test] Error 1
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
make: *** [debian/rules:6: binary] Error 2
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2