bug#61489: [PATCH v2] Increase BLOCK_ALIGN from 1024 to 32768

[Konstantin Kharlamov]

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@debbugs.gnu.org
> > > Date: Sat, 04 Mar 2023 13:26:58 +0200
> > > From: Eli Zaretskii <eliz@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.