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

[Keith David Bershatsky <esq@lawlist.com>]

Thank you, Eli, for reading and responding to this particular thread.

I have tried increasing MAX_PER_BUFFER_VARS from 50 to 60 and even 75, but that no longer works.  That approach worked back in early/mid-December 2018, but does not work with a current version of Emacs master branch.

I searched pdumper.c for a few popular buffer-local variables such as mode_line_format and cache_long_scans, but did not find them.  As such, I have no idea where else to add the new buffer local variables other than the regular locations in buffer.c and buffer.h as demonstrated in the working/broken patches attached to the initial post of this particular thread.

The build messages gives little clues for us to investigate this issue.  I have learned how to extract the new hash values from dmpstruct.h and insert them at the appropriate location of pdumper.c, but that is not what causes the build to fail in this particular issue.

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> Date: [03-30-2019 20:49:57] <31 Mar 2019 06:49:57 +0300>
> From: Eli Zaretskii <eliz@gnu.org>
> To: emacs-devel@gnu.org,Keith David Bershatsky <esq@lawlist.com>
> Subject: Re: buffer.c/buffer.h:  How to add new buffer-local variables?
> 
> * * *
> 
> Could it be you are overflowing MAX_PER_BUFFER_VARS?