... header info...

Crashed Thread:  14  QSGRenderThread

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000

... various threads...

Thread 14 Crashed:: QSGRenderThread
0   libsystem_c.dylib                   0x00007fff8fff959b strstr + 39
1   QtQuick                             0x0000000105644484 QSG24BitTextMaskShader::initialize() + 100
2   QtQuick                             0x0000000105619540 QSGBatchRenderer::ShaderManager::prepareMaterial(QSGMaterial*) + 464
3   QtQuick                             0x000000010562436f QSGBatchRenderer::Renderer::renderMergedBatch(QSGBatchRenderer::Batch const*) + 623
4   QtQuick                             0x0000000105626295 QSGBatchRenderer::Renderer::renderBatches() + 757
5   QtQuick                             0x0000000105627957 QSGBatchRenderer::Renderer::render() + 2551
6   QtQuick                             0x00000001056326d4 QSGRenderer::renderScene(QSGBindable const&) + 148
7   QtQuick                             0x000000010563262c QSGRenderer::renderScene() + 28
8   QtQuick                             0x0000000105640f8b QSGRenderContext::renderNextFrame(QSGRenderer*, unsigned int) + 107
9   QtQuick                             0x000000010567ba96 QQuickWindowPrivate::renderSceneGraph(QSize const&) + 646
10  QtQuick                             0x000000010565959f QSGRenderThread::syncAndRender() + 287
11  QtQuick                             0x0000000105659928 QSGRenderThread::run() + 168
12  QtCore                              0x0000000106694e60 QThreadPrivate::start(void*) + 352
13  libsystem_pthread.dylib             0x00007fff986e0899 _pthread_body + 138
14  libsystem_pthread.dylib             0x00007fff986e072a _pthread_start + 137
15  libsystem_pthread.dylib             0x00007fff986e4fc9 thread_start + 13