bug#46912: 28.0.50; Byte compiled defvar with lexical binding throws (void-variable foo)

[Lars Ingebrigtsen]

Joseph Mingrone <jrm@ftfl.ca> writes:

> With
>
>      ;;; -*- lexical-binding: t -*-
>
>      (let ((foo t))
>        (defvar tmp-bar foo))
>
> the same warning is reported when compiling, but when loading the .elc
> file, the debugger isn't started.  Just
>
>      load: Symbol’s value as variable is void: foo
>
> is reported.

I can reproduce this problem here, too (and Emacs 27 doesn't have this
problem).

I have not tried to bisect this, but since Pip pushed a change related
to this a couple days ago, I've added Pip to the CCs.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no