webrtc-jsc-crash

#0  0x00007ffff43e7b05 in WTFCrash () at /home/nick/projects/webkit-nix/src/nix/Source/WTF/wtf/Assertions.cpp:341
#1  0x00007ffff2cedf36 in JSC::Heap::allocateWithImmortalStructureDestructor (this=0x8908d8, bytes=112) at /home/nick/projects/webkit-nix/src/nix/Source/JavaScriptCore/heap/Heap.h:418
#2  0x00007ffff36f472b in JSC::allocateCell<JSC::Structure> (heap=..., size=112) at /home/nick/projects/webkit-nix/src/nix/Source/JavaScriptCore/runtime/JSCellInlines.h:97
#3  0x00007ffff36f413c in JSC::allocateCell<JSC::Structure> (heap=...) at /home/nick/projects/webkit-nix/src/nix/Source/JavaScriptCore/runtime/JSCellInlines.h:109
#4  0x00007ffff36f3b20 in JSC::Structure::create (vm=..., globalObject=0x7ffff7e8f970, prototype=<incomplete type>, typeInfo=..., classInfo=0x7ffff7cb9860 <WebCore::JSRTCSessionDescriptionPrototype::s_info>, indexingType=0 '\000', inlineCapacity=0) at /home/nick/projects/webkit-nix/src/nix/Source/JavaScriptCore/runtime/StructureInlines.h:39
#5  0x00007ffff37fc5d0 in WebCore::JSRTCSessionDescriptionPrototype::createStructure (vm=..., globalObject=0x7ffff7e8f970, prototype=<incomplete type>) at /home/nick/projects/webkit-nix/build/from-port-source-tree/WebKitBuild-nix/Debug/DerivedSources/WebCore/JSRTCSessionDescription.h:110
#6  0x00007ffff37fbb43 in WebCore::JSRTCSessionDescription::createPrototype (vm=..., globalObject=0x7ffff7e8f970) at /home/nick/projects/webkit-nix/build/from-port-source-tree/WebKitBuild-nix/Debug/DerivedSources/WebCore/JSRTCSessionDescription.cpp:133
#7  0x00007ffff37fd11b in WebCore::getDOMStructure<WebCore::JSRTCSessionDescription> (vm=..., globalObject=0x7ffff7e8f970) at /home/nick/projects/webkit-nix/src/nix/Source/WebCore/bindings/js/JSDOMBinding.h:104
#8  0x00007ffff37fd471 in WebCore::createWrapper<WebCore::JSRTCSessionDescription, WebCore::RTCSessionDescription> (exec=0x7ffff7e8f9b0, globalObject=0x7ffff7e8f970, node=0x7fff905f9460) at /home/nick/projects/webkit-nix/src/nix/Source/WebCore/bindings/js/JSDOMBinding.h:206
#9  0x00007ffff37fcdc1 in WebCore::createNewWrapper<WebCore::JSRTCSessionDescription, WebCore::RTCSessionDescription> (exec=0x7ffff7e8f9b0, globalObject=0x7ffff7e8f970, domObject=0x7fff905f9460) at /home/nick/projects/webkit-nix/src/nix/Source/WebCore/bindings/js/JSDOMBinding.h:232
#10 0x00007ffff37fc264 in WebCore::toJS (exec=0x7ffff7e8f9b0, globalObject=0x7ffff7e8f970, impl=0x7fff905f9460) at /home/nick/projects/webkit-nix/build/from-port-source-tree/WebKitBuild-nix/Debug/DerivedSources/WebCore/JSRTCSessionDescription.cpp:274
#11 0x00007ffff37fd9e5 in WebCore::JSRTCSessionDescriptionCallback::handleEvent (this=0x958360, sdp=0x7fff905f9460) at /home/nick/projects/webkit-nix/build/from-port-source-tree/WebKitBuild-nix/Debug/DerivedSources/WebCore/JSRTCSessionDescriptionCallback.cpp:70
#12 0x00007ffff27e2461 in WebCore::RTCSessionDescriptionRequestImpl::requestSucceeded (this=0x958a90, descriptor=<incomplete type>) at /home/nick/projects/webkit-nix/src/nix/Source/WebCore/Modules/mediastream/RTCSessionDescriptionRequestImpl.cpp:67
#13 0x00007ffff3bd59da in WebCore::CreateSessionDescriptionObserver::OnSuccess (this=0x95bcc0, desc=0x7fff905f7690) at /home/nick/projects/webkit-nix/src/nix/Source/WebCore/platform/mediastream/webrtc/observers/CreateSessionDescriptionObserver.cpp:43
#14 0x00007ffff45816ad in webrtc::WebRtcSessionDescriptionFactory::OnMessage(talk_base::Message*) () from /home/nick/local/lib/libWebKitNix.so.0
#15 0x00007ffff44aa419 in talk_base::Thread::ProcessMessages(int) () from /home/nick/local/lib/libWebKitNix.so.0
#16 0x00007ffff44aaaf9 in talk_base::Thread::PreRun(void*) () from /home/nick/local/lib/libWebKitNix.so.0
#17 0x00007fffeef1af8e in start_thread (arg=0x7fff97bff700) at pthread_create.c:311
#18 0x00007ffff1dc7a0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113