[Bug libstdc++/66145] [5/6 Regression] std::ios_base::failure objects thrown from libstdc++.so use old ABI

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66145

--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #4)
> The last handler matches, but it should have matched earlier.

Doh, this is expected, because the C++03 ios::failure doesn't derive from
runtime_error.