System Information
Operating system: win10
Graphics card: gtx1070

Blender Version
Broken: v2.80 RC2
Worked: (optional)

Short description of error

work on texture paint mode

choose color -> crash
using brush -> crash
mode switching (texture paint <-> object mode) -> crash

Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file (as simple as possible).