[Bug libstdc++/120976] error: static_assert( !is_same_v<__float128, long double> failed

[tkaminsk at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120976

--- Comment #3 from Tomasz Kamiński <tkaminsk at gcc dot gnu.org> ---
I have posted this patch in May, that will fix the issue:
https://gcc.gnu.org/pipermail/libstdc++/2025-May/061450.html
I think we should merge it.

The only architecture where __float128 exists and is different from long
double, that I am aware of is x86_64. However, this patch covers that case, via
formatting it using _Float128.