https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98384
--- Comment #5 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:19f3c433cdc92f1ad6c37f182d5034b03c54afef commit r11-6524-g19f3c433cdc92f1ad6c37f182d5034b03c54afef Author: Patrick Palka <ppa...@redhat.com> Date: Thu Jan 7 12:41:14 2021 -0500 libstdc++: Fix long double to_chars testcase [PR98384] The testcase was failing to compile on some targets due to its use of the non-standard functions nextupl and nextdownl. This patch makes the testcase instead use the C99 function nexttowardl in an equivalent way. libstdc++-v3/ChangeLog: PR libstdc++/98384 * testsuite/20_util/to_chars/long_double.cc: Use nexttowardl instead of the non-standard nextupl and nextdownl.