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Re: buffer.c/buffer.h: How to add new buffer-local variables?

From: Keith David Bershatsky
Subject: Re: buffer.c/buffer.h: How to add new buffer-local variables?
Date: Sat, 06 Apr 2019 19:50:14 -0700

Using an unsophisticated method of going back in time and building various 
versions of Emacs on the w32 platform, I tracked down the inability to add a 
few new buffer-local variables in buffer.c/buffer.h to a commit that occurred 
on 01/31/2019:  05d2fc7170fb66a87601b1c76ddae2c1b7b4b934.

Steps to reproduce the issue:

1.  git reset --hard 05d2fc7170fb66a87601b1c76ddae2c1b7b4b934

2.  Apply the attached patch that adds a few new buffer local variables.

3.  Build a w32 version of Emacs [I use MinGW_32 and ezwinports downloaded a 
couple of years ago, on a Windows XP SP-3 box]:

CFLAGS='-O0 -g3' ./configure \
--prefix=/c/docume~1/admini~1/desktop/trunk \
--enable-checking='yes,glyphs' \
--enable-check-lisp-object-type \
--without-compress-install \
--without-makeinfo \
--with-gnutls=no \
--with-mailutils \

4.  The build terminates abnormally at the following location:

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.
make[2]: *** [emacs-lisp/macroexp.elc] Error 3
make[2]: Leaving directory 
make[1]: *** [bootstrap-emacs.pdmp] Error 2
make[1]: Leaving directory 
make: *** [src] Error 2

Beyond pinpointing the exact commit where the Emacs build goes awry, I would be 
pleased to help further towards resolving this issue -- however, some pointers 
would be greatly appreciated.  Perhaps there is something that may stand out 
(to a trained programmer) in the 01/31/2019 commit ....


Attachment: 2019_04_06__19_33_22_280.diff
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