bug#30019: 26.0.90; Invalid specification of parent-frame with desktop-read

[Aaron Jensen]

From: martin rudalics (mailto:rudalics@gmx.at)
> When you put a breakpoint at the last line I suppose it's the
> FRAME_X_P (p) call that failed. Can you confirm that?

Confirmed, it was FRAME_X_P (p) that came back false. Btw, is there a
guide to setting a breakpoint in C code for emacs source? I don’t know
how to do that (I did this with logging).

Thanks,

Aaron