https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108969
--- Comment #23 from Florian Weimer <fw at gcc dot gnu.org> --- (In reply to Jakub Jelinek from comment #20) > So, when the @@GLIBCXX_3.4.31 alias is weak, at least the F36 linker puts > into the binary not just one but both symbols and so the aliasing isn't > broken. I'm not sure this is sufficient because old programs will only have the @GLIBCXX_3.4 reference and still break the aliases if copy relocations are involved. The internal libstdc++ things we could perhaps resolve, but even with that, it will only work if everything in the executable either uses the old version, or the new version. Mixed-mode operation still won't work because of the separation of the aliases.
