https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100146
--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jonathan Wakely <r...@gcc.gnu.org>: https://gcc.gnu.org/g:f1a68574b1f8d2961d3a676dbcf0cc24b6368578 commit r12-6-gf1a68574b1f8d2961d3a676dbcf0cc24b6368578 Author: Jonathan Wakely <jwak...@redhat.com> Date: Tue Apr 20 12:46:11 2021 +0100 libstdc++: Define __cpp_lib_to_chars for C++20 [PR 100146] This defines the feature test macro when uselocale is available, because the floating-point std::from_chars support currently depends on that. Co-authored-by: Jakub Jelinek <ja...@redhat.com> libstdc++-v3/ChangeLog: PR libstdc++/100146 * include/std/charconv (__cpp_lib_to_chars): Define conditionally. * include/std/version (__cpp_lib_to_chars): Likewise.. * testsuite/20_util/from_chars/4.cc: Only check feature test macro, not _GLIBCXX_HAVE_USELOCALE. * testsuite/20_util/from_chars/5.cc: Likewise. * testsuite/20_util/from_chars/6.cc: Likewise. * testsuite/20_util/to_chars/long_double.cc: Likewise.
