[Webkit-unassigned] [Bug 197988] New: REGRESSION (r245418) TestWebKitAPI.Challenge.ClientCertificate is crashing on Mojave

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=197988

            Bug ID: 197988
           Summary: REGRESSION (r245418)
                    TestWebKitAPI.Challenge.ClientCertificate is crashing
                    on Mojave
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit API
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sroberts at apple.com

The following API test is crashing on Mojave Release and Debug builds

TestWebKitAPI.Challenge.ClientCertificate

Verified locally with

run-api-tests TestWebKitAPI.Challenge.ClientCertificate --debug

Crash:

_RegisterApplication(), FAILED TO establish the default connection to the WindowServer, _CGSDefaultConnection() is NULL.
        1   0x10635dc79 WTFCrash
        2   0x104bd01b9 WTF::CrashOnOverflow::crash()
        3   0x104bd01a9 WTF::CrashOnOverflow::overflowed()
        4   0x104c2d06b WTF::Vector<WTF::RetainPtr<NSString>, 0ul, WTF::CrashOnOverflow, 16ul>::at(unsigned long) const
        5   0x104c2806d WTF::Vector<WTF::RetainPtr<NSString>, 0ul, WTF::CrashOnOverflow, 16ul>::operator[](unsigned long) const
        6   0x104c27d00 Challenge_ClientCertificate_Test::TestBody()
        7   0x105234d0e void testing::internal::HandleSehExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*)
        8   0x10520468b void testing::internal::HandleExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*)
        9   0x1052045b6 testing::Test::Run()
        10  0x1052057c5 testing::TestInfo::Run()
        11  0x1052066af testing::TestCase::Run()
        12  0x105212314 testing::internal::UnitTestImpl::RunAllTests()
        13  0x105238e8e bool testing::internal::HandleSehExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*)
        14  0x105211deb bool testing::internal::HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*)
        15  0x105211cc0 testing::UnitTest::Run()
        16  0x10506e931 RUN_ALL_TESTS()
        17  0x10506e8c1 TestWebKitAPI::TestsController::run(int, char**)
        18  0x1051d1a1e main
        19  0x7fff6f2b33d5 start
        20  0x2

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