https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98384
--- Comment #20 from Iain Sandoe <iains at gcc dot gnu.org> --- still failing on Darwin at r11-7425 - is that expected (i.e. patches pending) or more analysis needed? long_double.cc:83: test01()::<lambda(char*, long double, std::optional<int>)>: Assertion '!strcmp(begin, printf_buffer+strlen("0x"))' failed.