bug#33314: 27.0.50; wrong compiler warning

["Andreas Röhler" <andreas.roehler@online.de>]

On 09.11.2018 02:11, Noam Postavsky wrote:
> tags 33314 unreproducible moreinfo
> quit
> 
> Andreas Röhler <andreas.roehler@online.de> writes:
> 
>> So regexpvalue is used too. May send the complete function if interested.
> 
> Please do, I can't reproduce the warning you claimed in your original
> report (and frankly, I think you've been doing this long enough that you
> should know by now that such an abbreviated report is not very helpful).
> 
> Trying to fill in your example like this:
> 
>      ;;; -*- lexical-binding: t -*-
> 
>      (defun foo (regexp &optional something)
>         "..."
>         (unless (bobp)
>           (when (empty-line-p) (skip-chars-backward " \t\r\n\f"))
>           (let* ((orig (point))
>                  (regexpvalue (if (eq regexp 'py-clause-re)
>                                   (symbol-value
>                                    'py-extended-block-or-clause-re)
>                                 (symbol-value regexp))))
>             t)))
> 
> gives
> 
>      bug-33314-bcomp-warning.el:3:1:Warning: Unused lexical variable ‘regexpvalue’
>      bug-33314-bcomp-warning.el:3:1:Warning: Unused lexical variable ‘orig’
>      bug-33314-bcomp-warning.el:3:1:Warning: Unused lexical argument ‘something’
> 
>      In end of data:
>      bug-33314-bcomp-warning.el:13:1:Warning: the function ‘empty-line-p’ is not
>          known to be defined.
> 
> `regexp' is not mentioned, but the other unused variables are, as
> expected.
> 

Hmm, sorry, can't reproduce it any more. As this happens from time to 
time, should send a complete report indeed. Tried to replay for now, but 
couldn't find a saved state.

Thanks for your care,

Andreas