Put gibberish into the control.lua while still ingame.
ESC -> Restart
A dialog box complaining about a syntax error or whatever is displayed. Click OK.
You're left with the main menu background without any menu. Resize the window.
segfault
If the control.lua already contains garbage when creating a new game from the main menu, the same dialog box is displayed but clicking OK gets you back to the new game dialog without a segfault.