https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120315
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #1)
> >I got undefined behavior (segfault, missing output or exceptions) when using
> >a gcc 14 compiled library with a gcc 15 compiled executable.
>
>
> Forward compatibility is not guaranteed; only backwards.
No, neither direction is supported for C++20 yet.
std::format is not ABI stable, and neither are any other C++20 features.