Segfault in QSGParticleSystem if ModelParticle declared empty

[Thread debugging using libthread_db enabled]
Qml debugging is enabled. Only use this in a safe environment!
Qt: gdb: -nograb added to command-line options.
         Use the -dograb option to enforce grabbing.
ParticlePainter created without a particle system specified 
[New Thread 0xb311fb70 (LWP 22706)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb311fb70 (LWP 22706)]
0xb7d9d7ba in QSGParticleSystem::systemSync (this=0x0, p=0x81d4760) at particles/qsgparticlesystem.cpp:312
312         if (!m_running)
(gdb) bt
#0  0xb7d9d7ba in QSGParticleSystem::systemSync (this=0x0, p=0x81d4760) at particles/qsgparticlesystem.cpp:312
#1  0xb7d8ad32 in QSGModelParticle::prepareNextFrame (this=0x81d4760) at particles/qsgmodelparticle.cpp:229
#2  0xb7d8acb3 in QSGModelParticle::updatePaintNode (this=0x81d4760, n=0x0, d=0x810f6ac) at particles/qsgmodelparticle.cpp:219
#3  0xb7cab27b in QSGCanvasPrivate::updateDirtyNode (this=0x810f510, item=0x81d4760) at items/qsgcanvas.cpp:1861
#4  0xb7caa5e8 in QSGCanvasPrivate::updateDirtyNodes (this=0x810f510) at items/qsgcanvas.cpp:1691
#5  0xb7ca3f09 in QSGCanvasPrivate::syncSceneGraph (this=0x810f510) at items/qsgcanvas.cpp:389
#6  0xb7cabbee in QSGCanvasRenderThread::run (this=0x8197c60) at items/qsgcanvas.cpp:2090
#7  0xb5d136c7 in QThreadPrivate::start (arg=0x8197c60) at thread/qthread_unix.cpp:298
#8  0xb5b8f96e in start_thread (arg=0xb311fb70) at pthread_create.c:300
#9  0xb59c1a4e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130