On Mon, 28 Nov 2022 at 06:07, François Dumont via Libstdc++ <
libstdc++@gcc.gnu.org> wrote:

> This patch is fixing those tests:
>
> 20_util/to_chars/float128_c++23.cc
> std/format/formatter/requirements.cc
> std/format/functions/format.cc
> std/format/functions/format_to_n.cc
> std/format/functions/size.cc
> std/format/functions/vformat_to.cc
> std/format/string.cc
>
> Note that symbols used in <format> for __ibm128 and __iee128 are untested.
>

We don't need to do this for those symbols, the ALT128 config is
incompatible with versioned namespace. If you're using the versioned
namespace, you don't need backwards compatibility with the old long double
ABI.