222929 2021-03-08 12:05:57 -0800 REGRESSION (r274069): ASSERTION FAILED: m_isConstructed under WebCore::CSSFontSelector::CSSFontSelector 2021-03-08 13:17:32 -0800 1 1 1 Unclassified WebKit New Bugs Other Unspecified Unspecified RESOLVED CONFIGURATION CHANGED https://bugs.webkit.org/show_bug.cgi?id=222735 InRadar P2 Normal --- 1 ryanhaddad webkit-unassigned webkit-bot-watchers-bugzilla webkit-bug-importer oldest_to_newest 1737207 0 ryanhaddad 2021-03-08 12:05:57 -0800 Seeing the following API test consistently assert on iOS and macOS debug bots: TestWebKitAPI.DocumentOrder.Positions ASSERTION FAILED: m_isConstructed /Volumes/Data/worker/bigsur-debug/build/WebKitBuild/Debug/usr/local/include/wtf/NeverDestroyed.h(154) : WTF::LazyNeverDestroyed::PointerType WTF::LazyNeverDestroyed<WTF::Vector<WTF::AtomStringImpl *, 8, WTF::CrashOnOverflow, 16, WTF::FastMalloc>, WTF::MainThreadAccessTraits>::storagePointerWithoutAccessCheck() const [T = WTF::Vector<WTF::AtomStringImpl *, 8, WTF::CrashOnOverflow, 16, WTF::FastMalloc>, AccessTraits = WTF::MainThreadAccessTraits] 1 0x10f7d1049 WTFCrash 2 0x129acc47b WTFCrashWithInfo(int, char const*, char const*, int) 3 0x12c8240a7 WTF::LazyNeverDestroyed<WTF::Vector<WTF::AtomStringImpl*, 8ul, WTF::CrashOnOverflow, 16ul, WTF::FastMalloc>, WTF::MainThreadAccessTraits>::storagePointerWithoutAccessCheck() const 4 0x12c824032 WTF::LazyNeverDestroyed<WTF::Vector<WTF::AtomStringImpl*, 8ul, WTF::CrashOnOverflow, 16ul, WTF::FastMalloc>, WTF::MainThreadAccessTraits>::storagePointer() const 5 0x12c7f9ab5 WTF::LazyNeverDestroyed<WTF::Vector<WTF::AtomStringImpl*, 8ul, WTF::CrashOnOverflow, 16ul, WTF::FastMalloc>, WTF::MainThreadAccessTraits>::operator->() 6 0x12c7f958d WebCore::CSSFontSelector::CSSFontSelector(WebCore::ScriptExecutionContext&) 7 0x12c7f9e7d WebCore::CSSFontSelector::CSSFontSelector(WebCore::ScriptExecutionContext&) 8 0x12cb2cd3b WebCore::CSSFontSelector::create(WebCore::ScriptExecutionContext&) 9 0x12cb2b499 WebCore::Document::Document(WebCore::Frame*, WebCore::Settings const&, WTF::URL const&, unsigned char, unsigned int) 10 0x12cb2e4f0 WebCore::Document::Document(WebCore::Frame*, WebCore::Settings const&, WTF::URL const&, unsigned char, unsigned int) 11 0x10ce57a34 WebCore::Document::create(WebCore::Settings const&, WTF::URL const&) 12 0x10ce566e5 TestWebKitAPI::createDocument() 13 0x10ce51c5e TestWebKitAPI::DocumentOrder_Positions_Test::TestBody() 14 0x10d7c9b94 void testing::internal::HandleSehExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) 15 0x10d797dfb void testing::internal::HandleExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) 16 0x10d797d36 testing::Test::Run() 17 0x10d798e8a testing::TestInfo::Run() 18 0x10d799cd4 testing::TestCase::Run() 19 0x10d7a5398 testing::internal::UnitTestImpl::RunAllTests() 20 0x10d7cef24 bool testing::internal::HandleSehExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) 21 0x10d7a4e8b bool testing::internal::HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) 22 0x10d7a4d5d testing::UnitTest::Run() 23 0x10d527a11 RUN_ALL_TESTS() 24 0x10d5279a2 TestWebKitAPI::TestsController::run(int, char**) 25 0x10d7627df main 26 0x7fff20390621 start https://results.webkit.org/?suite=api-tests&test=TestWebKitAPI.DocumentOrder.Positions 1737240 1 ryanhaddad 2021-03-08 12:57:29 -0800 It appears that this was caused by https://trac.webkit.org/changeset/274069/webkit 1737242 2 webkit-bug-importer 2021-03-08 12:57:37 -0800 <rdar://problem/75183462> 1737259 3 ryanhaddad 2021-03-08 13:17:32 -0800 Reverted the change in https://commits.webkit.org/235032@main