C++17 compiler difficulties
This issue is to collect some difficulties with C++17 compiler support. We currently state that we support GCC 7 and Clang 5 or newer. In case many bugs are found in earlier compiler releases, we might need to request a specific bug fix release, e.g. GCC 7.4 instead of 7 in general, in the future.
Please only list confirmed cases here and add a comment with a short description.