[Bug c++/88348] ICE in pp_cxx_unqualified_id when handling pointer to pointer to member

[zhouzhouyi at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88348

--- Comment #1 from Zhouyi Zhou <zhouzhouyi at gmail dot com> ---
I submitted a patch in 
https://gcc.gnu.org/ml/gcc-patches/2018-12/msg00151.html
Can someone review it for me?