https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98384
--- Comment #10 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Patrick Palka <ppa...@gcc.gnu.org>: https://gcc.gnu.org/g:198c56052ea8cce4196e60c0dc3187bf3d67a786 commit r11-7337-g198c56052ea8cce4196e60c0dc3187bf3d67a786 Author: Patrick Palka <ppa...@redhat.com> Date: Mon Feb 22 21:49:25 2021 -0500 libstdc++: Fix endianness issue with IBM long double [PR98384] The code in std::to_chars for extracting the high- and low-order parts of an IBM long double value does the right thing on powerpc64le, but not on powerpc64be. This patch makes the extraction endian-agnostic, which fixes the execution FAIL of to_chars/long_double.cc on powerpc64be. libstdc++-v3/ChangeLog: PR libstdc++/98384 * src/c++17/floating_to_chars.cc (get_ieee_repr): Extract the high- and low-order parts from an IBM long double value in an endian-agnostic way.