Re: [Emacs-diffs] emacs-26 9bf66c6: Don't run FOR_EACH_FRAME when there's no frame left (Bug#29961)

[martin rudalics]

> 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.

I'm confused.  How did you recognize the "callers that have the
assumption"?  What about the call in check_glyph_memory?

martin