From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 2181) id 2E4F9395B066; Wed, 16 Nov 2022 15:07:22 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 2E4F9395B066 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1668611242; bh=8K5W9roWLC1Kv1k5UrOVg5mdZrb2W5HmX936Z6jXPmg=; h=From:To:Subject:Date:From; b=poE3PFiUly4k26g0lG+lWAFNx8x2DxZTmI5DYe2Rgcwm+Lz8LWNtF4dW3HVpixVG7 aLruP2QE9gXAvDFlL70W53c3zsDxiVH0PJM5qEU4f4h/UQwM45lHSleew7nIn881k2 G648m5X/U8OVxlyFJ+u/+NzazdcQfgoNZaPgzqNs= MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Jonathan Wakely To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc r13-4100] libstdc++: Add test for chrono::utc_clock leap second offset X-Act-Checkin: gcc X-Git-Author: Jonathan Wakely X-Git-Refname: refs/heads/master X-Git-Oldrev: f6d6fd05b37abfd9e1743484845e5990065a9a8c X-Git-Newrev: 7026d0455dce1092975d4884f450a12a6ed205c7 Message-Id: <20221116150722.2E4F9395B066@sourceware.org> Date: Wed, 16 Nov 2022 15:07:22 +0000 (GMT) List-Id: https://gcc.gnu.org/g:7026d0455dce1092975d4884f450a12a6ed205c7 commit r13-4100-g7026d0455dce1092975d4884f450a12a6ed205c7 Author: Jonathan Wakely Date: Wed Nov 16 15:04:32 2022 +0000 libstdc++: Add test for chrono::utc_clock leap second offset This test of leap second handling is taken from the C++20 standard. libstdc++-v3/ChangeLog: * testsuite/std/time/clock/utc/1.cc: Check handling across leap second insertion. Diff: --- libstdc++-v3/testsuite/std/time/clock/utc/1.cc | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/libstdc++-v3/testsuite/std/time/clock/utc/1.cc b/libstdc++-v3/testsuite/std/time/clock/utc/1.cc index eef5f3c3a48..18578fb1ab1 100644 --- a/libstdc++-v3/testsuite/std/time/clock/utc/1.cc +++ b/libstdc++-v3/testsuite/std/time/clock/utc/1.cc @@ -9,6 +9,8 @@ test01() { using namespace std::chrono; + // [time.clock.utc.overview] + auto epoch = sys_seconds{sys_days{1970y/January/1}}; auto utc_epoch = clock_cast(epoch); VERIFY( utc_epoch.time_since_epoch() == 0s ); @@ -18,7 +20,29 @@ test01() VERIFY( utc_y2k.time_since_epoch() == 946'684'822s ); } +void +test02() +{ + using namespace std::chrono; + + // [time.clock.utc.members] + + auto t = sys_days{July/1/2015} - 2ns; + auto u = utc_clock::from_sys(t); + VERIFY(u.time_since_epoch() - t.time_since_epoch() == 25s); + t += 1ns; + u = utc_clock::from_sys(t); + VERIFY(u.time_since_epoch() - t.time_since_epoch() == 25s); + t += 1ns; + u = utc_clock::from_sys(t); + VERIFY(u.time_since_epoch() - t.time_since_epoch() == 26s); + t += 1ns; + u = utc_clock::from_sys(t); + VERIFY(u.time_since_epoch() - t.time_since_epoch() == 26s); +} + int main() { test01(); + test02(); }