Re: Building master fails on Windows 10 when testing etc/NEWS file

[Eli Zaretskii <eliz@gnu.org>]

> From: Richard Copley <rcopley@gmail.com>
> Date: Wed, 18 Sep 2019 18:00:39 +0100
> Cc: Juanma Barranquero <lekktu@gmail.com>, martin rudalics <rudalics@gmx.at>, Paul Eggert <eggert@cs.ucla.edu>, 
> 	Emacs Development <emacs-devel@gnu.org>
> 
>  Richard said "installs", so maybe this problem only happens in an
>  installed Emacs?  Richard, do you see the same problem if you run
>  Emacs from its build tree?  To simulate an uninstalled Emacs, you
>  might need to rename the versioned subdirectory under the share/emacs/
>  directory where you install Emacs.
> 
> That could be the difference. I usually install Emacs, despite the inconvenience, because then emacs.exe
> lives alongside all the DLLs it will need and I can set $PATH and `exec-path' to any convenient value for
> subprocesses.
> 
> Emacs does launch correctly (at least, it displays a frame) if I run it from the src directory (I didn't need to
> move the versioned directory aside).
> 
> I have rebuilt Emacs from a clean repo, and the problem still exists. (If I launch the installed version I get the
> message I mentioned, and no frame is displayed, and Emacs exits.)

Then please run Emacs under GDB, put a breakpoint on line 1437 of
lread.c (that's where that message comes from), and when it breaks,
show the C and Lisp backtraces.