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

[redi at gcc dot gnu.org]

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

--- Comment #11 from Jonathan Wakely <redi at gcc dot gnu.org> ---
And bisecting with -std=c++20 instead of -std=c++20 confirms it was r11-2747.