David Fussner via "Bug reports for GNU Emacs, the Swiss army knife of
text editors" <bug-gnu-emacs@gnu.org> writes:

> With a .emacs file containing only the line:
>
> (tool-bar-mode -1)
>
> Then ./emacs in the repo src directory.
>
> On my system, the initial frame is blank except for a title bar, menu
> bar and a scroll bar -- no mini-buffer and nothing at all in the main
> window. If you resize the frame with the mouse or by keyboard shortcut
> then the usual splash screen appears, along with the mini-buffer. The
> symptoms differ somewhat if you add font specifications and/or frame
> size specifications to the .emacs file, but it still doesn't work
> right.
>
> I bisected it to commit 36431e1679, which modifies xterm.c. Reverting
> that commit and rebuilding brings back the previous behavior, and all
> looks correct to me.

Thank you for bisecting and the clear recipe.  This points at a recent
and fairly trivial patch by me, but I unfortunately can't reproduce the
issue here.

There is something subtle going on here that I don't understand.  Does
anyone else have an idea?

This might be a long-shot, but could you please try the attached patch
to see if it works better?  It's the best I could come up with; if it
doesn't work, I think someone else will have to help figure this one
out.