https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110653
--- Comment #13 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:58303d42809f0e01f23262f592d37943f7703f71 commit r14-2635-g58303d42809f0e01f23262f592d37943f7703f71 Author: Jonathan Wakely <jwak...@redhat.com> Date: Thu Jul 13 10:44:57 2023 +0100 libstdc++: Check autoconf macros for strtof and strtold [PR110653] As well as the _GLIBCXX_USE_C99_STDLIB check, we also have a separate check in linkage.m4 for just strtof and strtold. We can use that to declare std::strtof and std::strtold in <cstdlib> for additional targets. That allows us to enable std::stold on hpux11.11 which is missing strtoll, strtoull and strtof, so doesn't define _GLIBCXX_USE_C99_STDLIB. Although it doesn't help hpux11.11, we can define std::stof for more targets this way too. As with the previous commit for PR110653, this only affects the narrow character overloads. std::stof and std::stold for wstring still requires C99 <wchar.h> support. libstdc++-v3/ChangeLog: PR libstdc++/110653 * include/bits/basic_string.h [_GLIBCXX_HAVE_STRTOF] (stof): Define. [_GLIBCXX_HAVE_STRTOLD] (stold): Define. * include/c_global/cstdlib [_GLIBCXX_HAVE_STRTOF] (strtof): Declare in namespace std. [_GLIBCXX_HAVE_STRTOLD] (strtold): Likewise.
