[Bug c++/85061] ICE with __builtin_offsetof applied to static member

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85061

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 43757
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43757&action=edit
gcc8-pr85061.patch

Untested fix.