[Bug c++/91607] [9 regression] internal compiler error: in equal, at cp/constexpr.c:1088

[h2+bugs at fsfe dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91607

--- Comment #5 from Hannes Hauswedell <h2+bugs at fsfe dot org> ---
> (In reply to Marek Polacek from comment #4)
> The ICE was fixed by r266816.

But not for GCC9? 

I can confirm that GCC 9.2.1 snapshot from 20190817 still triggers the bug.