[Bug c++/67980] left shift count is negative [-Wshift-count-negative] generated for unreachable code

[nacitar at ubercpp dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67980

--- Comment #1 from Jacob McIntosh <nacitar at ubercpp dot com> ---
> but certainly this error shouldn't happen

By error, I meant "warning".