bug#52295: 28.0.90; Killing text results in coding system complaint

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: 52295@debbugs.gnu.org
> Date: Sun, 12 Dec 2021 18:58:22 +0800
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> >> ??? It appears that coding_from_cp is actually returning nil in this
> >> case.
> >> 
> >> This must be a bug in intern, because I don't see how else it could
> >> possibly return nil.
> 
> > It could also be some memory-related snafu, or some stupid omission
> > during startup when we run on Windows 9X.
> 
> FWIW, the problem doesn't appear with an unexec build

So I guess some code we need to run at startup doesn't get run in the
pdumper build.

> (though I did have to fix the build process somewhat to get unexec
> to work on the build system running MSYS).

Please tell the details, we should fix that.

> I will build a pdumper build with all the usual debug options and see
> what comes up.

Thanks.