http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49171
--- Comment #8 from Daniel Krügler <daniel.kruegler at googlemail dot com> 2012-10-05 14:17:18 UTC --- (In reply to comment #7) > Thus I understand that currently GCC is accepting *all sorts* of > reinterpret_cast uses in constexpr functions, right? That is, also those with > unspecified result? Correct. The introductory example belongs to this family, for example.