{"id":2229970,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2229970/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/patch/ormrymmt7w.fsf@lxoliva.fsfla.org/","project":{"id":17,"url":"http://patchwork.ozlabs.org/api/1.1/projects/17/?format=json","name":"GNU Compiler Collection","link_name":"gcc","list_id":"gcc-patches.gcc.gnu.org","list_email":"gcc-patches@gcc.gnu.org","web_url":null,"scm_url":null,"webscm_url":null},"msgid":"","date":"2026-04-29T01:49:07","name":"testsuite: semaphore/try_acquire_until: reorder clock::now calls","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"170c3dd262d4ea7b172f3e9c175dc9dca3ca36e8","submitter":{"id":74937,"url":"http://patchwork.ozlabs.org/api/1.1/people/74937/?format=json","name":"Alexandre Oliva","email":"oliva@adacore.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/gcc/patch/ormrymmt7w.fsf@lxoliva.fsfla.org/mbox/","series":[{"id":501970,"url":"http://patchwork.ozlabs.org/api/1.1/series/501970/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/list/?series=501970","date":"2026-04-29T01:49:07","name":"testsuite: semaphore/try_acquire_until: reorder clock::now calls","version":1,"mbox":"http://patchwork.ozlabs.org/series/501970/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2229970/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2229970/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","gcc-patches@gcc.gnu.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","gcc-patches@gcc.gnu.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n secure) header.d=adacore.com header.i=@adacore.com header.a=rsa-sha256\n header.s=google header.b=BmrLcn50;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org\n (client-ip=2620:52:6:3111::32; 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Reordering the calls avoids false positives.\n\nRegstrapped on x86_64-linux-gnu. Also tested on ppc-vx7r2 with gcc-15,\nwith an analogous patch for try_acquire_posix.cc. Ok to install?\n\n\nfor libstdc++-v3/ChangeLog\n\n\t* testsuite/30_threads/semaphore/try_acquire_until.cc\n\t(test01): Reorder calls.\n---\n .../30_threads/semaphore/try_acquire_until.cc | 2 +-\n 1 file changed, 1 insertion(+), 1 deletion(-)","diff":"diff --git a/libstdc++-v3/testsuite/30_threads/semaphore/try_acquire_until.cc b/libstdc++-v3/testsuite/30_threads/semaphore/try_acquire_until.cc\nindex 44b2b90431a41..dea8c53a5a02f 100644\n--- a/libstdc++-v3/testsuite/30_threads/semaphore/try_acquire_until.cc\n+++ b/libstdc++-v3/testsuite/30_threads/semaphore/try_acquire_until.cc\n@@ -43,8 +43,8 @@ void test01()\n }\n \n {\n- auto const at = std::chrono::system_clock::now() + dur;\n auto const t0 = std::chrono::steady_clock::now();\n+ auto const at = std::chrono::system_clock::now() + dur;\n VERIFY( !s.try_acquire_until(at) );\n auto const diff = std::chrono::steady_clock::now() - t0;\n VERIFY( diff >= dur );\n","prefixes":[]}