[Bug c++/69302] parentheses cause address of register variable to be requested

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69302

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
C++14 changes parentheses slightly.  In that it causes them to be a lvalue
still if it was a lvalue.