If the input point set is degenerate, dimension() < 3 is always 'true'
and we will eventually try to read beyond the end of the points vector.
See issue https://github.com/CGAL/cgal/issues/2922
Those warnings are annoying because:
- they happen on Linux rolling releases as soon as Boost version is more
recent than CMake version,
- we cannot do anything about them.
Example:
```
CMake Warning at /usr/share/cmake/Modules/FindBoost.cmake:801 (message):
New Boost version may have incorrect or missing dependencies and imported
targets
Call Stack (most recent call first):
/usr/share/cmake/Modules/FindBoost.cmake:907 (_Boost_COMPONENT_DEPENDENCIES)
/usr/share/cmake/Modules/FindBoost.cmake:1542 (_Boost_MISSING_DEPENDENCIES)
/mnt/testsuite/cmake/modules/CGAL_Macros.cmake:293 (find_package)
/mnt/testsuite/cmake/modules/UseCGAL.cmake:46 (use_component)
CMakeLists.txt:13 (include)
```
https://cgal.geometryfactory.com/CGAL/testsuite/CGAL-4.12-Ic-173/Algebraic_foundations/TestReport_gimeno_Fedora-rawhide-Release.gz
That should fix the following warning.
```
[ 50%] Building CXX object CMakeFiles/dynamic_properties_test.dir/dynamic_properties_test.cpp.o
/usr/local/bin/c++ -DCGAL_TEST_SUITE=1 -DCGAL_USE_GMP -DCGAL_USE_MPFR -I/home/cgal_tester/build/src/cmake/platforms/Ubuntu-latest-GCC6-CXX1z/test/Property_map/../../include -isystem /usr/include/x86_64-linux-gnu -I/home/cgal_tester/build/src/cmake/platforms/Ubuntu-latest-GCC6-CXX1z/test/Property_map -I/home/cgal_tester/build/src/cmake/platforms/Ubuntu-latest-GCC6-CXX1z/include -I/mnt/testsuite/include -DDONT_USE_BOOST_PROGRAM_OPTIONS -Wall -Wextra -std=c++1z -frounding-math -Wall -frounding-math -o CMakeFiles/dynamic_properties_test.dir/dynamic_properties_test.cpp.o -c /home/cgal_tester/build/src/cmake/platforms/Ubuntu-latest-GCC6-CXX1z/test/Property_map/dynamic_properties_test.cpp
In file included from /mnt/testsuite/include/CGAL/basic.h:43,
from /mnt/testsuite/include/CGAL/Cartesian/Cartesian_base.h:29,
from /mnt/testsuite/include/CGAL/Simple_cartesian.h:29,
from /mnt/testsuite/include/CGAL/Exact_predicates_inexact_constructions_kernel.h:29,
from /home/cgal_tester/build/src/cmake/platforms/Ubuntu-latest-GCC6-CXX1z/test/Property_map/dynamic_properties_test.cpp:2:
/mnt/testsuite/include/CGAL/Polyhedron_incremental_builder_3.h: In destructor 'CGAL::Polyhedron_incremental_builder_3<HalfedgeDS_>::~Polyhedron_incremental_builder_3()':
/mnt/testsuite/include/CGAL/assertions.h:104:30: warning: 'bool std::uncaught_exception()' is deprecated [-Wdeprecated-declarations]
(CGAL::possibly(EX)||std::uncaught_exception()?(static_cast<void>(0)): ::CGAL::assertion_fail( # EX , __FILE__, __LINE__))
^~~~~~~~~~~~~~~~~~
/mnt/testsuite/include/CGAL/Polyhedron_incremental_builder_3.h:204:9: note: in expansion of macro 'CGAL_destructor_assertion'
CGAL_destructor_assertion( check_protocoll == 0);
^~~~~~~~~~~~~~~~~~~~~~~~~
```
https://cgal.geometryfactory.com/CGAL/testsuite/CGAL-4.12-Ic-168/Property_map/TestReport_lrineau_Ubuntu-latest-GCC6-CXX1z.gzFix#2806.
Mael Rouxel-Labbé
Laurent Rineau
Luis Peñaranda
Maxime Gimeno
Simon Giraudot
Konstantinos Katrioplas