[Bug c++/84162] Internal compiler error: in tsubst, at cp/pt.c:13617 / SEGFAULT

[lumosimann at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84162

--- Comment #1 from Lukas Mosimann <lumosimann at gmail dot com> ---
The minimal example is already reduced a lot; until now, I wasn't able to track
the error down to an even smaller chunk of code.