[PATCH v2] libstdc++: Preserve the argument type in basic_format_args [PR119246]

[Rainer Orth]

Hi Tomasz,

> I am not aware of architectures  where the additional specialization for
> __float128
> would be useful, so if my patch of changing _GLIBCXX_FORMAT_F128 > 1 to
> _GLIBCXX_FORMAT_F128 == 2
> addressed your build, I can submit it.

with this patch, the sparc-sun-solaris2.11 bootstrap completed over
night without regressions.

Thanks.
        Rainer

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Rainer Orth, Center for Biotechnology, Bielefeld University