[Bug libstdc++/66145] [5/6/7 Regression] std::ios_base::failure objects thrown from libstdc++.so use old ABI

[matare at lih dot rwth-aachen.de]

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

--- Comment #20 from Victor Mataré <matare at lih dot rwth-aachen.de> ---
(In reply to Victor Mataré from comment #19)
> > I'm not suggesting anything radical or novel, just the standard way to use
> > iostreams.
> [...]
> Maybe anyone with more insight into the standardization process knows
> anything about this?

Addendum: Maybe one (probably not the best) solution could be to let the linker
throw a warning or an error, and to let the distributors sort it out.

Btw, if this triggers a bug somewhere in a larger, existing codebase, it might
be hard to track down for developers, so I think we should at least have a
warning kinda soonish.