[Bug bootstrap/86739] [9 Regression] Bootstrap broken with host GCC 4.1.2

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86739

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #5)
> ISTR figuring the default hash_map<> template resolution is a bit tricky.

ISTR thinking it was rather overcomplicated.