I get this assertion every time when running tests in debug mode. It's a regression, as I've been able to run tests in debug mode a few months ago. $ run-webkit-tests --ios-simulator js/intl-collator.html --no-retry --no-timeout #1 0x0000000110eb3455 in WebCore::ResourceResponse::platformCertificateInfo() const at /Volumes/Data/Safari/OpenSource/Source/WebCore/platform/network/cocoa/ResourceResponseCocoa.mm:70 #2 0x0000000112461cb4 in WebCore::ResourceResponseBase::includeCertificateInfo() const at /Volumes/Data/Safari/OpenSource/Source/WebCore/platform/network/ResourceResponseBase.cpp:181 #3 0x00000001098c6962 in WebKit::NetworkLoad::sharedDidReceiveResponse(WebCore::ResourceResponse const&) at /Volumes/Data/Safari/OpenSource/Source/WebKit2/NetworkProcess/NetworkLoad.cpp:141 #4 0x00000001098c6b6d in WebKit::NetworkLoad::didReceiveResponseAsync(WebCore::ResourceHandle*, WebCore::ResourceResponse const&) at /Volumes/Data/Safari/OpenSource/Source/WebKit2/NetworkProcess/NetworkLoad.cpp:232 #5 0x00000001124510e5 in ::___ZN7WebCore55ResourceHandleCFURLConnectionDelegateWithOperationQueue18didReceiveResponseEP16_CFURLConnectionP14_CFURLResponse_block_invoke() at /Volumes/Data/Safari/OpenSource/Source/WebCore/platform/network/cf/ResourceHandleCFURLConnectionDelegateWithOperationQueue.cpp:162
When this happens, m_nsResponse is null, but m_cfResponse is not null. I'm beginning to suspect http://trac.webkit.org/r194378
Created attachment 267921 [details] proposed fix Yes, definitely that. I just made sure that this test runs, and didn't audit the rest of the patch. It's probably worth another look.
Comment on attachment 267921 [details] proposed fix Clearing flags on attachment: 267921 Committed r194420: <http://trac.webkit.org/changeset/194420>
All reviewed patches have been landed. Closing bug.