GNU bug report logs - #61489
[PATCH 1/1] Increase BLOCK_ALIGN from 2¹⁰to 2¹⁵

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Konstantin Kharlamov <hi-angel <at> yandex.ru>
Cc: 61489 <at> debbugs.gnu.org
Subject: bug#61489: [PATCH v2] Increase BLOCK_ALIGN from 1024 to 32768
Date: Sat, 04 Mar 2023 21:53:46 +0200

> From: Konstantin Kharlamov <hi-angel <at> yandex.ru>
> Cc: 61489 <at> debbugs.gnu.org
> Date: Sat, 04 Mar 2023 21:58:06 +0300
> 
> On Sat, 2023-03-04 at 18:33 +0300, Konstantin Kharlamov wrote:
> > On Sat, 2023-03-04 at 17:00 +0200, Eli Zaretskii wrote:
> > > > Cc: 61489-done <at> debbugs.gnu.org
> > > > Date: Sat, 04 Mar 2023 13:26:58 +0200
> > > > From: Eli Zaretskii <eliz <at> gnu.org>
> > > > 
> > > > > * src/alloc.c (BLOCK_ALIGN): increase from 1024 to 32768
> > > > 
> > > > Thanks, installed on the master branch, and closing the bug.
> > > 
> > > Note: this change breaks the unexec build, see bug#61960.
> > 
> > Oh, I see, thanks! I'll try to build Emacs with sanitizer, it's usually pretty
> > good at that kind of bugs. Will see if there's anything obvious
> 
> FTR: it might take longer than I expected, because for unknown reason Emacs built with sanitizer isn't built with sanitizer. Yeah, lol. I passed the `-fsanitize=address,undefined` to CFLAGS, and `./configure …` output even confirmed it registered them. However, after everything was built, it does not make use of sanitizer.
> 
> I also realised I forgot to pass `-lasan` to LDFLAGS, so the build should've failed at link-stage. Apparently there are some bugs in the build system related to passing cflags through to the actual compiler.

Are you saying that the advice in etc/DEBUG how to set this up and how
to run the resulting Emacs is inaccurate or incorrect or outdated?

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