Run the following command: run-webkit-tests --debug --no-retry --internal-feature RenderCanvasInGPUProcessEnabled fast/canvas/2d.text.draw.fill.maxWidth.gradient.html fast/canvas/2d.text.draw.fill.maxWidth.negative.html fast/canvas/2d.text.draw.fill.maxWidth.veryLarge.html fast/canvas/2d.text.draw.fill.maxWidth.verySmall.html fast/canvas/canvas-blending-text.html fast/canvas/canvas-composite-text-alpha.html fast/canvas/font-update.html All the tests will fail with the following assertion: stderr: ARGUMENT BAD: font, font platform/graphics/cocoa/FontPlatformDataCocoa.mm(44) : WebCore::FontPlatformData::FontPlatformData(CTFontRef, float, bool, bool, WebCore::FontOrientation, WebCore::FontWidthVariant, WebCore::TextRenderingMode) 1 0x135c39339 WTFCrash 2 0x11c4c5a0c WebCore::FontPlatformData::FontPlatformData(__CTFont const*, float, bool, bool, WebCore::FontOrientation, WebCore::FontWidthVariant, WebCore::TextRenderingMode) 3 0x10f5d6fb4 IPC::ArgumentCoder<WebCore::FontHandle>::decodePlatformData(IPC::Decoder&, WebCore::FontHandle&) 4 0x1105b11a7 IPC::ArgumentCoder<WebCore::FontHandle>::decode(IPC::Decoder&, WebCore::FontHandle&) 5 0x10f35058e IPC::Decoder& IPC::Decoder::operator>><WebCore::FontHandle, (void*)0>(WTF::Optional<WebCore::FontHandle>&) 6 0x10f3320f9 WTF::Optional<WTF::Ref<WebCore::DisplayList::DrawGlyphs, WTF::DumbPtrTraits<WebCore::DisplayList::DrawGlyphs> > > WebCore::DisplayList::DrawGlyphs::decode<IPC::Decoder>(IPC::Decoder&) 7 0x10f32dc4b WTF::Optional<WTF::Ref<WebCore::DisplayList::Item, WTF::DumbPtrTraits<WebCore::DisplayList::Item> > > WebCore::DisplayList::Item::decode<IPC::Decoder>(IPC::Decoder&) 8 0x10f32d02f WTF::Optional<WebCore::DisplayList::DisplayList> WebCore::DisplayList::DisplayList::decode<IPC::Decoder>(IPC::Decoder&) 9 0x10f32ce5c WTF::Optional<WebCore::DisplayList::DisplayList> IPC::ArgumentCoder<WebCore::DisplayList::DisplayList>::decode<WebCore::DisplayList::DisplayList, (void*)0>(IPC::Decoder&) 10 0x10f32cbf4 IPC::Decoder& IPC::Decoder::operator>><WebCore::DisplayList::DisplayList, (void*)0>(WTF::Optional<WebCore::DisplayList::DisplayList>&) 11 0x10f369633 IPC::TupleDecoderImpl<WebCore::DisplayList::DisplayList, WTF::ObjectIdentifier<WebKit::ImageBufferFlushIdentifierType>, WTF::ObjectIdentifier<WebKit::ImageBufferIdentifierType> >::decode(IPC::Decoder&) 12 0x10f3695ec IPC::TupleDecoder<3ul, WebCore::DisplayList::DisplayList, WTF::ObjectIdentifier<WebKit::ImageBufferFlushIdentifierType>, WTF::ObjectIdentifier<WebKit::ImageBufferIdentifierType> >::decode(IPC::Decoder&) 13 0x10f36948c IPC::ArgumentCoder<std::__1::tuple<WebCore::DisplayList::DisplayList, WTF::ObjectIdentifier<WebKit::ImageBufferFlushIdentifierType>, WTF::ObjectIdentifier<WebKit::ImageBufferIdentifierType> > >::decode(IPC::Decoder&) 14 0x10f369264 IPC::Decoder& IPC::Decoder::operator>><std::__1::tuple<WebCore::DisplayList::DisplayList, WTF::ObjectIdentifier<WebKit::ImageBufferFlushIdentifierType>, WTF::ObjectIdentifier<WebKit::ImageBufferIdentifierType> >, (void*)0>(WTF::Optional<std::__1::tuple<WebCore::DisplayList::DisplayList, WTF::ObjectIdentifier<WebKit::ImageBufferFlushIdentifierType>, WTF::ObjectIdentifier<WebKit::ImageBufferIdentifierType> > >&) 15 0x10f31ec11 void IPC::handleMessage<Messages::RemoteRenderingBackendProxy::FlushImageBufferDrawingContextAndCommit, WebKit::RemoteRenderingBackendProxy, void (WebKit::RemoteRenderingBackendProxy::*)(WebCore::DisplayList::DisplayList const&, WTF::ObjectIdentifier<WebKit::ImageBufferFlushIdentifierType>, WTF::ObjectIdentifier<WebKit::ImageBufferIdentifierType>)>(IPC::Decoder&, WebKit::RemoteRenderingBackendProxy*, void (WebKit::RemoteRenderingBackendProxy::*)(WebCore::DisplayList::DisplayList const&, WTF::ObjectIdentifier<WebKit::ImageBufferFlushIdentifierType>, WTF::ObjectIdentifier<WebKit::ImageBufferIdentifierType>)) 16 0x10f31e796 WebKit::RemoteRenderingBackendProxy::didReceiveMessage(IPC::Connection&, IPC::Decoder&) 17 0x10eef7adb IPC::MessageReceiverMap::dispatchMessage(IPC::Connection&, IPC::Decoder&) 18 0x10f37b8c6 WebKit::GPUConnectionToWebProcess::dispatchMessage(IPC::Connection&, IPC::Decoder&) 19 0x10f2859d0 WebKit::GPUConnectionToWebProcess::didReceiveMessage(IPC::Connection&, IPC::Decoder&) 20 0x10ee4d839 IPC::Connection::dispatchMessage(IPC::Decoder&) 21 0x10ee4e192 IPC::Connection::dispatchMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >) 22 0x10ee4e840 IPC::Connection::dispatchOneIncomingMessage() 23 0x10ee6d19e IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)::$_7::operator()() 24 0x10ee6d0ae WTF::Detail::CallableWrapper<IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)::$_7, void>::call() 25 0x135c60342 WTF::Function<void ()>::operator()() const 26 0x135ccd348 WTF::RunLoop::performWork() 27 0x135ccdcf1 WTF::RunLoop::performWork(void*) 28 0x7fff354af342 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ 29 0x7fff354af2e1 __CFRunLoopDoSource0 30 0x7fff354af0fb __CFRunLoopDoSources0 31 0x7fff354ade2a __CFRunLoopRun LEAK: 1 WebPageProxy
<rdar://problem/60289716>
I think this is a dup of https://bugs.webkit.org/show_bug.cgi?id=206118
*** This bug has been marked as a duplicate of bug 206118 ***