public inbox for libstdc++-cvs@sourceware.org help / color / mirror / Atom feed
From: Jonathan Wakely <redi@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc r13-6810] libstdc++: Define __cpp_lib_constexpr_algorithms in <utility> (LWG 3792) Date: Wed, 22 Mar 2023 17:49:47 +0000 (GMT) [thread overview] Message-ID: <20230322174947.983333857C45@sourceware.org> (raw) https://gcc.gnu.org/g:924d990425d29ef39f3faac49d4a3772e4302c96 commit r13-6810-g924d990425d29ef39f3faac49d4a3772e4302c96 Author: Jonathan Wakely <jwakely@redhat.com> Date: Wed Mar 22 12:55:29 2023 +0000 libstdc++: Define __cpp_lib_constexpr_algorithms in <utility> (LWG 3792) We actually defined this macro in <utility> at one point, but I removed it in r10-7901-g2025db692e9ed1. libstdc++-v3/ChangeLog: * include/std/utility (__cpp_lib_constexpr_algorithms): Define, as per LWG 3792. * testsuite/20_util/exchange/constexpr.cc: Check for it. Diff: --- libstdc++-v3/include/std/utility | 4 ++++ libstdc++-v3/testsuite/20_util/exchange/constexpr.cc | 6 ++++++ 2 files changed, 10 insertions(+) diff --git a/libstdc++-v3/include/std/utility b/libstdc++-v3/include/std/utility index 43d8765228c..006b19c00fc 100644 --- a/libstdc++-v3/include/std/utility +++ b/libstdc++-v3/include/std/utility @@ -86,6 +86,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION #if __cplusplus >= 201402L #define __cpp_lib_exchange_function 201304L +#if __cplusplus > 201703L +# define __cpp_lib_constexpr_algorithms 201806L +#endif + /// Assign @p __new_val to @p __obj and return its previous value. template <typename _Tp, typename _Up = _Tp> _GLIBCXX20_CONSTEXPR diff --git a/libstdc++-v3/testsuite/20_util/exchange/constexpr.cc b/libstdc++-v3/testsuite/20_util/exchange/constexpr.cc index 6c130f772f8..2ec13044681 100644 --- a/libstdc++-v3/testsuite/20_util/exchange/constexpr.cc +++ b/libstdc++-v3/testsuite/20_util/exchange/constexpr.cc @@ -20,6 +20,12 @@ #include <utility> +#ifndef __cpp_lib_constexpr_algorithms +# error "Feature test macro for constexpr std::exchange is missing in <utility>" +#elif __cpp_lib_constexpr_algorithms < 201806L +# error "Feature test macro for constexpr std::exchange has wrong value in <utility>" +#endif + constexpr bool test() {
reply other threads:[~2023-03-22 17:49 UTC|newest] Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20230322174947.983333857C45@sourceware.org \ --to=redi@gcc.gnu.org \ --cc=gcc-cvs@gcc.gnu.org \ --cc=libstdc++-cvs@gcc.gnu.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).