[Bug libstdc++/100912] powerpc64le: ieee128 long double incorrectly printed when using shared libstdc++

[qiu.chaofan at outlook dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100912

--- Comment #10 from Qiu Chaofan <qiu.chaofan at outlook dot com> ---
Hi, does GCC plan to switch to IEEE-quad as default `long double` semantics (or
at least fully support it but under an option)? If so, I guess this should be a
blocker.

If GCC 12 supports it well, other compilers like Clang can emit warning if
enabling abi=ieeelongdouble but linking against older libstdcxx version.