#0  add<WTF::HashMapTranslator<WTF::HashMapValueTraits<WTF::HashTraits<int>, WTF::HashTraits<WebKit::CoordinatedBackingStoreTile> >, WTF::IntHash<unsigned int> >, int, WebKit::CoordinatedBackingStoreTile> (extra=..., key=<synthetic pointer>, this=0x10) at ../WTF/wtf/HashTable.h:815
        k = <optimized out>
        i = <optimized out>
        table = <optimized out>
        sizeMask = <optimized out>
        h = 17652959
        deletedEntry = <optimized out>
        entry = <optimized out>
#1  inlineAdd (mapped=..., key=<synthetic pointer>, this=0x10) at ../WTF/wtf/HashMap.h:340
No locals.
#2  add (mapped=..., key=<synthetic pointer>, this=0x10) at ../WTF/wtf/HashMap.h:367
No locals.
#3  WebKit::CoordinatedBackingStore::createTile (this=0x0, id=73, scale=<unavailable>) at UIProcess/CoordinatedGraphics/CoordinatedBackingStore.cpp:70
No locals.
#4  0x00007fb598cc53bb in operator() (this=<optimized out>) at ../WTF/wtf/Functional.h:613
No locals.
#5  WebKit::LayerTreeRenderer::syncRemoteContent (this=this@entry=0x7fb5b809fc00) at UIProcess/CoordinatedGraphics/LayerTreeRenderer.cpp:647
        i = 471
        renderQueue = {m_size = 1537, m_buffer = {<WTF::VectorBufferBase<WTF::Function<void()> >> = {m_buffer = 0x7fb53494b700, m_capacity = 1612}, <No data fields>}}
        calledOnMainThread = <optimized out>
#6  0x00007fb598cc5f86 in WebKit::LayerTreeRenderer::paintToCurrentGLContext (this=0x7fb5b809fc00, matrix=..., opacity=1, clipRect=..., PaintFlags=0) at UIProcess/CoordinatedGraphics/LayerTreeRenderer.cpp:107
        layer = <optimized out>
#7  0x00007fb598dce571 in WebKit::ContentsSGNode::render (this=0x7fb5301ea500, state=...) at UIProcess/qt/QtWebPageSGNode.cpp:59
        renderMatrix = {m = {{0.816326559, 0, 0, 0}, {0, 0.816326559, 0, 0}, {0, 0, 0.816326559, 0}, {0, 0, 0, 1}}, flagBits = 3}
        projection = <optimized out>
#8  0x00007fb5cfc47aa4 in QSGDefaultRenderer::renderNodes (this=this@entry=0x7fb53011b6a0, nodes=<optimized out>, count=count@entry=10) at scenegraph/coreapi/qsgdefaultrenderer.cpp:409
        renderNode = 0x7fb5301ea500
        changeClip = true
        state = {projectionMatrix = 0x7fb53749ebb0, scissorRect = {x1 = 0, y1 = 0, x2 = 799, y2 = 599}, stencilValue = 0, stencilEnabled = false, scissorEnabled = true}
        changes = <optimized out>
        i = <optimized out>
        scale = <optimized out>
        currentRenderOrder = -2147483648
        currentClipType = {i = 1}
        projection = {m = {{0.00249999994, 0, 0, 0}, {0, -0.00333333341, 0, 0}, {0, 0, 1, 0}, {-1, 1, 0, 1}}, flagBits = 3}
#9  0x00007fb5cfc4853c in QSGDefaultRenderer::render (this=0x7fb53011b6a0) at scenegraph/coreapi/qsgdefaultrenderer.cpp:281
        opaqueEnd = 1
        transparentEnd = 10
        i = 0
        r = <optimized out>
        opaqueStart = 0
        transparentStart = 0
#10 0x00007fb5cfc4dcb8 in QSGRenderer::renderScene (this=0x7fb53011b6a0, bindable=...) at scenegraph/coreapi/qsgrenderer.cpp:271
        bindTime = 0
        renderTime = 0
#11 0x00007fb5cfc4dde7 in QSGRenderer::renderScene (this=<optimized out>) at scenegraph/coreapi/qsgrenderer.cpp:229
        b = warning: RTTI symbol not found for class 'QSGRenderer::renderScene()::B'
{<QSGBindable> = {_vptr.QSGBindable = 0x7fb5d007b3d0 <vtable for QSGRenderer::renderScene()::B+16>}, <No data fields>}
#12 0x00007fb5cfc57345 in QSGContext::renderNextFrame (this=<optimized out>, renderer=0x7fb53011b6a0, fboId=<optimized out>) at scenegraph/qsgcontext.cpp:270
No locals.
#13 0x00007fb5cfc8436a in QQuickWindowPrivate::renderSceneGraph (this=0x7fb5d2137f30, size=...) at items/qquickwindow.cpp:349
        _qml_memory_scope = {pushed = false}
        fboId = <optimized out>
        devicePixelRatio = <optimized out>
#14 0x00007fb5cfd66363 in QQuickRenderThreadSingleContextWindowManager::run (this=0x7fb5d2138920) at items/qquickthreadedwindowmanager.cpp:456
        window = 0x7fb5d2137e70
        windowData = 0x7fb5d23aa030
        it = {i = 0x7fb5d22ff0e0}
        __PRETTY_FUNCTION__ = "virtual void QQuickRenderThreadSingleContextWindowManager::run()"
#15 0x00007fb5d0929186 in QThreadPrivate::start (arg=0x7fb5d2138920) at thread/qthread_unix.cpp:333
        __clframe = {__cancel_routine = 0x7fb5d09283b0 <QThreadPrivate::finish(void*)>, __cancel_arg = 0x7fb5d2138920, __do_it = 1, __cancel_type = <optimized out>}
        thr = 0x7fb5d2138920
        data = <optimized out>
        objectName = {static null = {<No data fields>}, d = 0x7fb5d0b37260 <QArrayData::shared_null>}
#16 0x00007fb5ce2fe182 in start_thread (arg=0x7fb53749f700) at pthread_create.c:312
        __res = <optimized out>
        pd = 0x7fb53749f700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140416293402368, 2617010013217962848, 0, 0, 140416293403072, 140416293402368, -2649503966752195744, -2649558169186649248}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#17 0x00007fb5ce60eb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
No locals.