[RFC][PATCH v3 06/11] Provide backward compatibility for strftime family (bug 10871).

[Rafal Luzynski]

18.10.2016 17:08 Joseph Myers <joseph@codesourcery.com> wrote:
>
>
> __strftime_l and __wcsftime_l are also public exports, also used by
> libstdc++, so also need compatibility.

Technically I can provide it, together with __nl_langinfo_l, but
are you sure it will be useful for libstdc++?  My concern is that
libstdc++ will have to provide its own backward compatibility
explicitly.  Otherwise an executable dynamically linked against
libstdc++ will have no way to tell whether it wants a new or old
version of underlying functions.

My other concern is that no other function starting with double
underscore provides multiple versions, at least on x86_64
architecture.  I've found several which provide only backward
compatible versions but no current version, I guess that's the
way to mark them as deprecated.

Regards,

Rafal