> You are proposing that we find all the places where SELECTED_FRAME is
 > used and fix them one by one?  I thought it could be better to fix
 > them all at once as part of SELECTED_FRAME.

We are still miscommunicating.  I only want to fix the parts that
restore selected_frame so to make sure that they never set it to a dead
frame.  See the attached selected_frame.diff.

martin