[Bug libstdc++/92546] [10 Regression] Large increase in preprocessed file sizes in C++2a mode

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92546

--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Yes this is just a nice-to-have, not critical.

I already made some big improvements, but then some new features made the sizes
jump up again. I'll take another look for low-hanging fruit, but if it doesn't
happen for 10.1 it's not a big deal.