Operating system: Windows 10
Graphics card: GTX 970
2.80, 5e356cc5c89b, blender2.8, 2019-01-12
Short description of error
Blender crash when using OSL + Rendering with Cycles in Viewport + Material tab in Properties or Select material in Node editor or any other places that the material icons are shown.
Exact steps for others to reproduce the error
Open Blender, Set Cycles and OSL on. Set render mode to Rendered. Open the Material tab in Properties editor.