https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83912
--- Comment #3 from Giuseppe Campana <giu.campana at gmail dot com> --- The snippet showed by DR2022 (http://open-std.org/JTC1/SC22/WG21/docs/cwg_defects.html#2022) works fine with gcc, but it fails to compile if the object passes through a function. As pointed out by Jakub, in these cases clang succeeds only is the object is not a local constexpr.
