https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66139
--- Comment #12 from Xi Ruoyao <ryxi at stu dot xidian.edu.cn> --- (In reply to Jaak Ristioja from comment #9) > [1]: http://stackoverflow.com/a/43892501/3919155 I don't think this is the same bug. This bug seems happening because GCC created "constexpr B::B(void)", but actually it throws, so can not be constexpr.
