Bug 55378

A worker thread is executing the function and the assertion requires the mainthread to do it. http://webkit-bots.igalia.com/amd64/svn_79853.core-when_1298894990-_-who_DumpRenderTree-_-why_11.trace.html Thread 1 (Thread 11402): #0 0x00007f7c7de5d175 in WTF::(anonymous namespace)::ARC4RandomNumberGenerator::randomNumber (this=0xd70340) at ../../Source/JavaScriptCore/wtf/CryptographicallyRandomNumber.cpp:146 #1 0x00007f7c7de5d2ef in WTF::cryptographicallyRandomNumber () at ../../Source/JavaScriptCore/wtf/CryptographicallyRandomNumber.cpp:181 #2 0x00007f7c7de6b171 in WTF::randomNumber () at ../../Source/JavaScriptCore/wtf/RandomNumber.cpp:57 #3 0x00007f7c7cfff3d9 in JSC::JSGlobalObject::JSGlobalObjectData::JSGlobalObjectData (this=0x7f7c6c009780, destructor=0x7f7c7cffa2d6 <WebCore::JSDOMGlobalObject::destroyJSDOMGlobalObjectData(void*)>) at ../../Source/JavaScriptCore/runtime/JSGlobalObject.h:73 #4 0x00007f7c7d03d83b in WebCore::JSDOMGlobalObject::JSDOMGlobalObjectData::JSDOMGlobalObjectData (this=0x7f7c6c009780, world=0x7f7c6c005ff0, destructor=0x7f7c7cffa2d6 <WebCore::JSDOMGlobalObject::destroyJSDOMGlobalObjectData(void*)>) at ../../Source/WebCore/bindings/js/JSDOMGlobalObject.h:82 #5 0x00007f7c7d03d34e in WebCore::JSWorkerContextBase::JSWorkerContextBase (this=0x7f7c2acc10d0, structure=..., impl=...) at ../../Source/WebCore/bindings/js/JSWorkerContextBase.cpp:49 #6 0x00007f7c7dbba6af in WebCore::JSWorkerContext::JSWorkerContext (this=0x7f7c2acc10d0, structure=..., impl=...) at DerivedSources/WebCore/JSWorkerContext.cpp:163 #7 0x00007f7c7db83dbb in WebCore::JSSharedWorkerContext::JSSharedWorkerContext (this=0x7f7c2acc10d0, structure=..., impl=...) at DerivedSources/WebCore/JSSharedWorkerContext.cpp:88 #8 0x00007f7c7d072fdb in WebCore::WorkerScriptController::initScript (this=0x778190) at ../../Source/WebCore/bindings/js/WorkerScriptController.cpp:94 #9 0x00007f7c7cffb20c in WebCore::WorkerScriptController::initScriptIfNeeded (this=0x778190) at ../../Source/WebCore/bindings/js/WorkerScriptController.h:74 #10 0x00007f7c7d073323 in WebCore::WorkerScriptController::evaluate (this=0x778190, sourceCode=..., exception=0x7f7c2b946ad0) at ../../Source/WebCore/bindings/js/WorkerScriptController.cpp:125 #11 0x00007f7c7d0731dc in WebCore::WorkerScriptController::evaluate (this=0x778190, sourceCode=...) at ../../Source/WebCore/bindings/js/WorkerScriptController.cpp:109 #12 0x00007f7c7d9aabe5 in WebCore::WorkerThread::workerThread (this=0xd523d0) at ../../Source/WebCore/workers/WorkerThread.cpp:135 #13 0x00007f7c7d9aaa40 in WebCore::WorkerThread::workerThreadStart (thread=0xd523d0) at ../../Source/WebCore/workers/WorkerThread.cpp:118 #14 0x00007f7c7de78d11 in WTF::threadEntryPoint (contextData=0x778190) at ../../Source/JavaScriptCore/wtf/Threading.cpp:67 #15 0x00007f7c78f158ba in start_thread () from /lib/libpthread.so.0 #16 0x00007f7c78c7d02d in clone () from /lib/libc.so.6 You can check also: ASSERTION FAILED: isMainThread()<br> ../../Source/JavaScriptCore/wtf/CryptographicallyRandomNumber.cpp(146) : uint32_t WTF::<unnamed>::ARC4RandomNumberGenerator::randomNumber()<br> </tt><br> http://build.webkit.org/builders/GTK%20Linux%2032-bit%20Debug/builds/14100/steps/jscore-test/logs/results