[Bug c++/70444] Optimizer removes expression template

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70444

Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |trippels at gcc dot gnu.org
         Resolution|---                         |INVALID

--- Comment #3 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Yes. 
Making e.g.:
 const Left & left;
an object is one way to fix the undefined behavior:
 const Left left;