The macro DUNE_ASSERT_AND_RETURN was introduced due to a shortcoming in some old compilers to allow assert() directly in constexpr functions. This is valid since c++14 and all minimal required compiler versions support this. So, the macro DUNE_ASSERT_AND_RETURN is useless and even leads to issues with static code analyzers. It should not be used anymore!
Note
There is still a test for this macro. Thus, when compiling the testsuite there will be a warning raised.
