[Bug c++/95475] Imprecise column number of runtime error in unreachable program point

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95475

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The question is where should it be, at the open of the () or the start of the
identifier __builtin_unreachable ?  In C++, it is the open.  In C, it is the
start.