Calling destroy() of a item written by C++ which inherit QQuickItem, there's a chance it'll crash.

//代码占位符
1  QSGBatchRenderer::Renderer::renderMergedBatch qsgbatchrenderer.cpp        2277 0x2aeb0ec6     
2  QSGBatchRenderer::Renderer::renderBatches     qsgbatchrenderer.cpp        2532 0x2aeb2ab0     
3  QSGBatchRenderer::Renderer::render            qsgbatchrenderer.cpp        2735 0x2aeb79d7     
4  QSGRenderer::renderScene                      qsgrenderer.cpp             244  0x2aea6b63     
5  QSGRenderer::renderScene                      qsgrenderer.cpp             197  0x2aea6ff7     
6  QSGDefaultRenderContext::renderNextFrame      qsgdefaultrendercontext.cpp 182  0x2aee3404     
7  QQuickWindowPrivate::renderSceneGraph         qquickwindow.cpp            487  0x2af3a625     
8  QSGRenderThread::syncAndRender                qsgthreadedrenderloop.cpp   646  0x2aeef591     
9  QSGRenderThread::run                          qsgthreadedrenderloop.cpp   730  0x2aef301b     
10 QThreadPrivate::start                         qthread_win.cpp             405  0x6fdc6cea     
11 KERNEL32!BaseThreadInitThunk                                                   0x7ffad8847bd4 
12 ntdll!RtlUserThreadStart                                                       0x7ffad8f2ce71 
13 ??                                                                                            

updateClip(gn->clipList(), batch);

batch	@0x97f32b90	QSGBatchRenderer::Batch
dirty	<optimized out>	
e	@0x2a2adf8	QSGBatchRenderer::Element
gn	0x0	QSGGeometryNode*
rootMatrix	@0x9b2bf7b0	QMatrix4x4
separateIndexBuffer	<optimized out>	
this	@0x997f4640	QSGBatchRenderer::Renderer
vOffset	<optimized out>