bug#61579: master branch: Byte compilation: Warning messages inside eval-and-compile lose their positions.

[Alan Mackenzie]

Hello, Emacs.

This bug has been fixed in the master branch.

On Fri, Feb 17, 2023 at 17:08:56 +0000, Alan Mackenzie wrote:
> In buffer *scratch*, enter the following:

> (eval-and-compile
>   (defvar foo "foo")
>   (make-variable-buffer-local 'foo))

> ..  With point inside that form, do M-x compile-defun.  This causes these
> warnings in *Compile-Log*:

>   Buffer *scratch*:4:2: Warning: global/dynamic var `foo' lacks a prefix
>   Buffer *scratch*:4:2: Warning: `make-variable-buffer-local' not called at
>           toplevel

> ..  The position 4:2 is the position of eval-and-compile, not the correct
> positions of the two warning messages.  This is a bug.

> [Side note: When eval-and-compile is replaced by eval-when-compile,
> correct warning positions are generated thus:

>   Buffer *scratch*:5:11: Warning: global/dynamic var `foo' lacks a prefix
>   Buffer *scratch*:6:4: Warning: `make-variable-buffer-local' not called at
>           toplevel

> ..]

-- 
Alan Mackenzie (Nuremberg, Germany).