[Bug c++/96819] [11 Regression] ICE when reading <tuple> from libc++ 9

[ppalka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96819

--- Comment #9 from Patrick Palka <ppalka at gcc dot gnu.org> ---
Is this with -std=c++20 or -std=c++17?  From what I can tell r11-2747 adds a
fragment of code that is run only for c++20, and then r11-2748 makes it run for
c++17 as well.  And only the first commit was backported to the 10 branch.