sections, see also https://github.com/catchorg/Catch2/issues/816#issuecomment-278268122

As a result, when built with gcc, loop iterations were skipped. When
built with clang, the test aborted with an assertion in catch.hpp
line 6222.

This also addresses the issues discussed here:
https://github.com/nlohmann/json/issues/1032#issuecomment-378707696

and here:
https://github.com/catchorg/Catch2/issues/1241

Please note that this introduces new problems, as some of
the unit tests fail now - the library stores keys in
lexographical order, while the cbor/msgpack/ubjson examples
store them in original order.