https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82359
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Andrew Schepler from comment #0) > In C++14 and later, any integer literal may contain single quote characters > (aka apostrophe, ASCII 0x27). That's a standard defect (and has already been raised as such on the committee reflector).
