Crash using keyaccel and iop flip
I manage to crash darktable reproducible doing the following steps:
1) Assign keyaccels to iop/flip/rotate 90° ccw and cw (in my case: "x" and "y")
2) open a file on dr (in my case a Olympus ORF)
3) rotate the image using the flip module (in either direction)
4) press the keyaccel to rotate again (or mack) - darktable will crash.
Attached is a backtrace.