https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94890
--- Comment #8 from Ville Voutilainen <ville.voutilainen at gmail dot com> --- (In reply to Marek Polacek from comment #6) > Thanks Ville. What I should have said... > > (In reply to Marek Polacek from comment #4) > > My current theory is that it is not a bug. > > ...in the compiler proper. It'd be nice if the original test compiled. No worries. This needs two library fixes and an LWG issue, I'll take care of it.