[Bug ipa/123227] [13/14/15/16 regression] -Os (icf) miscompiles code by merging member and non-member functions with different nullability assumptions

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123227

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 63103
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=63103&action=edit
Reduced C testcase