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From: Jonathan Wakely <redi@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc r10-9703] libstdc++: Fix <bit> to work freestanding [PR 100060] Date: Tue, 13 Apr 2021 17:52:13 +0000 (GMT) [thread overview] Message-ID: <20210413175213.CCA723857832@sourceware.org> (raw) https://gcc.gnu.org/g:d83dace65b97112320042c7f4941b64ef339799d commit r10-9703-gd83dace65b97112320042c7f4941b64ef339799d Author: Jonathan Wakely <jwakely@redhat.com> Date: Tue Apr 13 16:55:37 2021 +0100 libstdc++: Fix <bit> to work freestanding [PR 100060] libstdc++-v3/ChangeLog: PR libstdc++/100060 * include/std/bit: Only include <ext/numeric_traits.h> for hosted build, use <limits> otherwise. (cherry picked from commit 474cb5a0a404c5de7c1cd21aac8b1b7e7ce95d9b) Diff: --- libstdc++-v3/include/std/bit | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/libstdc++-v3/include/std/bit b/libstdc++-v3/include/std/bit index f22ee528555..2b24f0d450b 100644 --- a/libstdc++-v3/include/std/bit +++ b/libstdc++-v3/include/std/bit @@ -34,7 +34,23 @@ #if __cplusplus >= 201402L #include <type_traits> -#include <ext/numeric_traits.h> + +#if _GLIBCXX_HOSTED +# include <ext/numeric_traits.h> +#else +# include <limits> +/// @cond undocumented +namespace __gnu_cxx +{ + template<typename _Tp> + struct __int_traits + { + static constexpr int __digits = std::numeric_limits<_Tp>::digits; + static constexpr _Tp __max = std::numeric_limits<_Tp>::max(); + }; +} +/// @endcond +#endif namespace std _GLIBCXX_VISIBILITY(default) {
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