Hello, On Wed 02 Aug 2023 at 02:49pm +01, Ian Jackson wrote:
> Sean Whitton writes ("Bug#1042889: vm: autopkgtest fails against Emacs 29.1"):
>> vm's autopkgtest fails with Emacs 29.1, which latter is now in sid.
>
> Hi, Sean, as you see we're looking into this.
> I have some questions for you as an Emacs expert:
>
> Is byte-compilation known to be sometimes broken? Is there a
> recommended approach to problems caused by byte-compilation ?
The bytecompiler tends to get fussier with each Emacs release.
Usually it's worth fixing the problems with the code it identifies.
It's unlikely to be actually broken in a stable release of Emacs.
> We recently did an update to vm in Debian stable, to work around a
> critical problem with Emacs 28 (#1039105). The autopkgtest which is
> now failing is new - I introduced it to detect future bugs, which it
> seems to have done.
>
> The previous bug was related to byte-compilation and we "fixed" it by
> turning off byte-compilation for at least some of vm's files (in what
> I feel was rather an ad-hoc way, albeit an effective one).
>
> Or to put it another way, is it possible that this is a bug in emacs
> 29.1 and if so what is the best workaround ?
Before disabling anything, it seems worth looking at the code and seeing
if you can figure out why there's a void-variable error being emitted at
all.
--
Sean Whitton
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