The tests fails in trunk, but it is working properly in the stable branch: ERROR:../../Source/WebKit2/UIProcess/API/gtk/tests/WebViewTest.cpp:206:void resourceGetDataCallback(GObject*, GAsyncResult*, gpointer): assertion failed: (data) Backtrace: #0 0x00007ffff49cd425 in raise () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x00007ffff49d0b8b in abort () from /lib/x86_64-linux-gnu/libc.so.6 #2 0x00007ffff7eeab07 in g_assertion_message (domain=domain@entry=0x0, file=file@entry=0x410130 "../../Source/WebKit2/UIProcess/API/gtk/tests/WebViewTest.cpp", line=line@entry=206, func=func@entry=0x410300 <resourceGetDataCallback(_GObject*, _GAsyncResult*, void*)::__PRETTY_FUNCTION__> "void resourceGetDataCallback(GObject*, GAsyncResult*, gpointer)", message=<optimized out>) at gtestutils.c:1882 #3 0x00007ffff7eeb064 in g_assertion_message_expr (domain=0x0, file=0x410130 "../../Source/WebKit2/UIProcess/API/gtk/tests/WebViewTest.cpp", line=206, func=0x410300 <resourceGetDataCallback(_GObject*, _GAsyncResult*, void*)::__PRETTY_FUNCTION__> "void resourceGetDataCallback(GObject*, GAsyncResult*, gpointer)", expr=<optimized out>) at gtestutils.c:1893 #4 0x000000000040d341 in resourceGetDataCallback(_GObject*, _GAsyncResult*, void*) () #5 0x00007ffff50cbd3e in g_simple_async_result_complete (simple=0x5a2200) at gsimpleasyncresult.c:777 #6 0x00007ffff5c9d5c2 in resourceDataCallback(OpaqueWKData const*, OpaqueWKError const*, void*) () from /home/mrego/work/WebKit/WebKitBuild/Release/.libs/libwebkit2gtk-3.0.so.0 #7 0x00007ffff5cfdf21 in WebKit::WebPageProxy::dataCallback(CoreIPC::DataReference const&, unsigned long) () from /home/mrego/work/WebKit/WebKitBuild/Release/.libs/libwebkit2gtk-3.0.so.0 #8 0x00007ffff5db84e7 in void CoreIPC::handleMessage<Messages::WebPageProxy::DataCallback, WebKit::WebPageProxy, void (WebKit::WebPageProxy::*)(CoreIPC::DataReference const&, unsigned long)>(CoreIPC::MessageDecoder&, WebKit::WebPageProxy*, void (WebKit::WebPageProxy::*)(CoreIPC::DataReference const&, unsigned long)) () from /home/mrego/work/WebKit/WebKitBuild/Release/.libs/libwebkit2gtk-3.0.so.0 #9 0x00007ffff5db43ed in WebKit::WebPageProxy::didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageDecoder&) () from /home/mrego/work/WebKit/WebKitBuild/Release/.libs/libwebkit2gtk-3.0.so.0 #10 0x00007ffff5c28f65 in CoreIPC::MessageReceiverMap::dispatchMessage(CoreIPC::Connection*, CoreIPC::MessageDecoder&) () from /home/mrego/work/WebKit/WebKitBuild/Release/.libs/libwebkit2gtk-3.0.so.0 #11 0x00007ffff5d17501 in WebKit::WebProcessProxy::didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageDecoder&) () from /home/mrego/work/WebKit/WebKitBuild/Release/.libs/libwebkit2gtk-3.0.so.0 #12 0x00007ffff5c23153 in CoreIPC::Connection::dispatchMessage(WTF::PassOwnPtr<CoreIPC::MessageDecoder>) () from /home/mrego/work/WebKit/WebKitBuild/Release/.libs/libwebkit2gtk-3.0.so.0 #13 0x00007ffff5c232c0 in CoreIPC::Connection::dispatchOneMessage() () from /home/mrego/work/WebKit/WebKitBuild/Release/.libs/libwebkit2gtk-3.0.so.0 #14 0x00007ffff6ce4dab in WebCore::RunLoop::performWork() () from /home/mrego/work/WebKit/WebKitBuild/Release/.libs/libwebkit2gtk-3.0.so.0 #15 0x00007ffff71db999 in WebCore::RunLoop::queueWork(WebCore::RunLoop*) () from /home/mrego/work/WebKit/WebKitBuild/Release/.libs/libwebkit2gtk-3.0.so.0 #16 0x00007ffff7ec8375 in g_main_dispatch (context=0x45ebc0) at gmain.c:2784 #17 g_main_context_dispatch (context=context@entry=0x45ebc0) at gmain.c:3288 #18 0x00007ffff7ec86b8 in g_main_context_iterate (context=0x45ebc0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3359 #19 0x00007ffff7ec8b22 in g_main_loop_run (loop=0x5429a0) at gmain.c:3553 #20 0x000000000040dd90 in WebViewTest::mainResourceData(unsigned long&) () #21 0x00000000004086ee in testWebContextURIScheme(URISchemeTest*, void const*) () #22 0x00007ffff7eeb22d in test_case_run (tc=0x533c10) at gtestutils.c:1684 #23 g_test_run_suite_internal (suite=suite@entry=0x534ca0, path=<optimized out>, path@entry=0x7ffff7f307cd "") at gtestutils.c:1737 #24 0x00007ffff7eeb3a6 in g_test_run_suite_internal (suite=suite@entry=0x534c80, path=<optimized out>, path@entry=0x7ffff7f307cd "") at gtestutils.c:1748 #25 0x00007ffff7eeb3a6 in g_test_run_suite_internal (suite=suite@entry=0x534d20, path=<optimized out>, path@entry=0x7ffff7f307cd "") at gtestutils.c:1748 #26 0x00007ffff7eeb70b in g_test_run_suite (suite=0x534d20) at gtestutils.c:1793 #27 0x000000000040d112 in main ()