On 12/15/2017 08:23 AM, Stefan Monnier wrote:
> Is the problem caused by eassume (CONSP (Vframe_list))?
> If so, maybe we should simply remove it.

That's a good idea. However, some calls to FOR_EACH_FRAME do assume that 
frame-list is non-nil, while others don't. So when we remove the eassume 
from FOR_EACH_FRAME, we should add it to callers that have the 
assumption (otherwise --enable-gcc-warnings would sometimes rightly 
complain). I installed the attached.