[Bug other/100463] many errors using GTY and hash_map

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100463

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Why would you want to have a hash_map<int,int> GTY(())ed at all?  For PCH?!