[Bug tree-optimization/127685] [17 Regression] Constant member-function pointer table loads optimized to null since r17-4752

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127685

--- Comment #5 from Drea Pinski <pinskia at gcc dot gnu.org> ---
> The member-function pointer constructor and the load have distinct
  FIELD_DECL nodes for __pfn, belonging to equivalent record types.

I am not sure this should be done. So this might be a c++ FE issue.