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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/107815] 20_util/to_chars/float128_c++23.cc FAILs
Date: Wed, 23 Nov 2022 16:07:16 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107815

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 53953
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D53953&action=3Dedit
gcc13-pr107815.patch

Untested workaround.  I've left out Darwin there for now, because I think
it just doesn't support _Float128 right now - powerpc*-darwin* has long dou=
ble
in IBM double double format, x86_64-darwin* has long double probably Intel
extended format and aarch64*-darwin*, which probably doesn't have support in
GCC yet at all, I think has long double in IEEE double format.  And _Float1=
28
in libstdc++ is supported only if long double is IEEE quad or of libc provi=
des
*f128 APIs (currently only glibc 2.26 does).=