bug#23369: 25.0.93; CANNOT_DUMP build fails if resizing terminal during startup in tty mode

[Eli Zaretskii <eliz@gnu.org>]

> From: Glenn Morris <rgm@gnu.org>
> Cc: fredrik@fornwall.net,  23369@debbugs.gnu.org
> Date: Wed, 27 Apr 2016 14:48:41 -0400
> 
> Eli Zaretskii wrote:
> 
> > I'd still like to see a full backtrace when the problem happens, both
> > C and Lisp level.
> 
> I can't get one. I just get "NSTATICS too small" (even if I make it huge).

If you run that command under GDB, with a breakpoint on the code which
issues this message, don't you get the backtrace?

> >> Also, it seems like if CANNOT_DUMP builds encounter an error loading
> >> loadup.el, they go on to run the command-loop with only a partially
> >> loaded loadup, which leads to confusing error messages that have nothing
> >> to do with the real problem. Can they be made to abort instead?
> >
> > How will aborting help diagnosing the problems?  IME, it tends to hide
> > evidence, not make it more clear.
> 
> In that Emacs might stop near the actual error (eg "loading foo..."),
> rather than going on to fail with some totally unrelated error (eg
> "Symbol's function definition is void: internal-echo-keystrokes-prefix"
> as in this case).

But the error message is actually quite informative; at the very
least, it tells where the problem happened, and frequently also names
the guilty function or variable.