Bug 112765

An assertion failure in DocumentLoader was seen on the Mac Debug bots after both Bug 112593 and Bug 112745 were fixed: http://build.chromium.org/p/chromium.webkit/builders/WebKit%20Mac10.7%20%28dbg%29/builds/3122 Excerpt from the failure log: [ RUN ] CppBoundClassTest.InvokeMethods ASSERTION FAILED: !error.isNull() ../../third_party/WebKit/Source/WebCore/loader/DocumentLoader.cpp(221) : void WebCore::DocumentLoader::mainReceivedError(const WebCore::ResourceError &) 1 0x784fcd0 WebCore::DocumentLoader::mainReceivedError(WebCore::ResourceError const&) 2 0x7850583 WebCore::DocumentLoader::cancelMainResourceLoad(WebCore::ResourceError const&) 3 0x78501a4 WebCore::DocumentLoader::stopLoading() 4 0x789b15e WebCore::FrameLoader::stopAllLoaders(WebCore::ClearProvisionalItemPolicy) 5 0x7899dfe WebCore::FrameLoader::continueLoadAfterNavigationPolicy(WebCore::ResourceRequest const&, WTF::PassRefPtr<WebCore::FormState>, bool) 6 0x789a05c WebCore::FrameLoader::callContinueLoadAfterNavigationPolicy(void*, WebCore::ResourceRequest const&, WTF::PassRefPtr<WebCore::FormState>, bool) 7 0x78d2d2c WebCore::PolicyCallback::call(bool) 8 0x78d3db4 WebCore::PolicyChecker::continueAfterNavigationPolicy(WebCore::PolicyAction) 9 0x48a18ea WebKit::FrameLoaderClientImpl::dispatchDecidePolicyForNavigationAction(void (WebCore::PolicyChecker::*)(WebCore::PolicyAction), WebCore::NavigationAction const&, WebCore::ResourceRequest const&, WTF::PassRefPtr<WebCore::FormState>) 10 0x78d3a6c WebCore::PolicyChecker::checkNavigationPolicy(WebCore::ResourceRequest const&, WebCore::DocumentLoader*, WTF::PassRefPtr<WebCore::FormState>, void (*)(void*, WebCore::ResourceRequest const&, WTF::PassRefPtr<WebCore::FormState>, bool), void*) 11 0x7899892 WebCore::FrameLoader::loadWithDocumentLoader(WebCore::DocumentLoader*, WebCore::FrameLoadType, WTF::PassRefPtr<WebCore::FormState>) 12 0x7896372 WebCore::FrameLoader::load(WebCore::DocumentLoader*) 13 0x789916e WebCore::FrameLoader::load(WebCore::FrameLoadRequest const&) 14 0x495b0fc WebKit::WebFrameImpl::loadData(WebKit::WebData const&, WebKit::WebString const&, WebKit::WebString const&, WebKit::WebURL const&, WebKit::WebURL const&, bool) 15 0x495b2ad WebKit::WebFrameImpl::loadHTMLString(WebKit::WebData const&, WebKit::WebURL const&, WebKit::WebURL const&, bool) 16 0xdccf0 (anonymous namespace)::CppBoundClassTest::ExecuteJavaScript(std::string const&) 17 0xdc9ee (anonymous namespace)::CppBoundClassTest::CheckJavaScriptSuccess(std::string const&) 18 0xdfc94 (anonymous namespace)::CppBoundClassTest_InvokeMethods_Test::TestBody() 19 0x286911 void testing::internal::HandleSehExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) 20 0x2754fe void testing::internal::HandleExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) 21 0x2685be testing::Test::Run() 22 0x269087 testing::TestInfo::Run() 23 0x269959 testing::TestCase::Run() 24 0x26f165 testing::internal::UnitTestImpl::RunAllTests() 25 0x2816f1 bool testing::internal::HandleSehExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) 26 0x27814e bool testing::internal::HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) 27 0x26edf4 testing::UnitTest::Run() 28 0x2f2e28 base::TestSuite::Run() 29 0x156eac main 30 0xdbc25 start 31 0x3 Received signal 11 SEGV_MAPERR 0000bbadbeef [0x000003b848ff] [0x000003b8489b] ... Ignore the webkit_tests failure in that build; it's unrelated and already dealt with. I've attempted to reproduce this assertion failure locally without success, so am not sure whether it's a flake or regression. Watching the debug bots for another cycle to see whether WebKit can be rolled.