[Bug libstdc++/125228] Avoid using assert in libstdc++

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125228

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Drea Pinski from comment #1)
> These are all __glibcxx_assert you are complaining about.

No, there are uses of 'assert' in the third-party ryu lib that we use:

src/c++17/ryu/common.h:  assert(v < 1000000000);