From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by sourceware.org (Postfix) with ESMTPS id 74108395A463 for ; Wed, 16 Nov 2022 15:07:42 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 74108395A463 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=redhat.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1668611262; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=HVThmTm3nf0Ytoo81v09uLlAUFlkNLeNFpWUHZNY+qg=; b=a1I1F4DRI4sZgki3/7dWtX+p/LgFF5UQEWZGpVA4BdQnUnKRfyePKsuzDrwKK9z5fnBBul dX+m/DewxIVeoGsMl9Qme+fUJW1miEw1oewvQbZUnOTvDFvpYCYlWWRcz8280jcuMnyH51 SGpnbrZzVMOO3I0Ekhb5I7ck2dS7/0M= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-479-Mz38UUZDPqezoHtpiMEeJg-1; Wed, 16 Nov 2022 10:07:39 -0500 X-MC-Unique: Mz38UUZDPqezoHtpiMEeJg-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 9BF68800186; Wed, 16 Nov 2022 15:07:38 +0000 (UTC) Received: from localhost (unknown [10.33.36.199]) by smtp.corp.redhat.com (Postfix) with ESMTP id 6463140C6EC3; Wed, 16 Nov 2022 15:07:38 +0000 (UTC) From: Jonathan Wakely To: libstdc++@gcc.gnu.org, gcc-patches@gcc.gnu.org Subject: [committed] libstdc++: Add test for chrono::utc_clock leap second offset Date: Wed, 16 Nov 2022 15:07:35 +0000 Message-Id: <20221116150735.1374787-1-jwakely@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.2 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-11.8 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,GIT_PATCH_0,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_NONE,TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: Tested x86_64-linux. Pushed to trunk. -- >8 -- 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. --- .../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(); } -- 2.38.1