315012 2026-05-18 04:33:38 -0700 [Debug] WTF.AutomaticThreadTemporaryStop is a flaky assertion crash 2026-05-18 05:18:12 -0700 1 1 1 Unclassified WebKit WPE WebKit WebKit Nightly Build Unspecified Unspecified RESOLVED DUPLICATE 315015 P2 Normal --- 1 csaavedra webkit-unassigned angelos bugs-noreply oldest_to_newest 2211682 0 csaavedra 2026-05-18 04:33:38 -0700 TestWTF --gtest_filter=WTF.AutomaticThread* --gtest_repeat=20 ASSERTION FAILED: m_isRunning Source/WTF/wtf/AutomaticThread.cpp(171) : void WTF::AutomaticThread::start(const WTF::AbstractLocker&) 1 WTF::AutomaticThread::start(WTF::AbstractLocker const&) 2 WTF::AutomaticThreadCondition::notifyOne(WTF::AbstractLocker const&) 3 WTF_AutomaticThreadTemporaryStop_Test::TestBody() Happens a lot in the EWS API testers that run with assertions enabled, see https://ews-build.webkit.org/#/builders/41 and search for AutomaticThreadTemporaryStop . 2211689 1 csaavedra 2026-05-18 04:47:34 -0700 *** Bug 315015 has been marked as a duplicate of this bug. *** 2211691 2 csaavedra 2026-05-18 04:47:38 -0700 *** Bug 315014 has been marked as a duplicate of this bug. *** 2211693 3 csaavedra 2026-05-18 04:47:41 -0700 *** Bug 315013 has been marked as a duplicate of this bug. *** 2211694 4 csaavedra 2026-05-18 04:48:09 -0700 See also: https://results.webkit.org/?suite=api-tests&test=TestWTF:WTF.AutomaticThreadTemporaryStop 2211697 5 csaavedra 2026-05-18 05:18:12 -0700 *** This bug has been marked as a duplicate of bug 315015 ***