https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61892
--- Comment #3 from tower120 <tower120 at gmail dot com> --- But wait, we talk about move constructor. But this is a template class. Template class can not have move constructor at all.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61892
--- Comment #3 from tower120 <tower120 at gmail dot com> --- But wait, we talk about move constructor. But this is a template class. Template class can not have move constructor at all.