GNU bug report logs - #8518
24.0.50; 'byte-compile-error-on-warn' no effect on 'defvar ignored because X is let-bound' warning

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: David Engster <deng <at> randomsample.de>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#8518: closed (24.0.50; 'byte-compile-error-on-warn' no effect
 on 'defvar ignored because X is let-bound' warning)
Date: Tue, 19 Apr 2011 05:41:02 +0000

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Your message dated Tue, 19 Apr 2011 07:39:50 +0200
with message-id <87ipuahk9l.fsf <at> engster.org>
and subject line Re: bug#8518: 24.0.50; 'byte-compile-error-on-warn' no effect on 'defvar ignored because X is let-bound' warning
has caused the GNU bug report #8518,
regarding 24.0.50; 'byte-compile-error-on-warn' no effect on 'defvar ignored because X is let-bound' warning
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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8518: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=8518
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From: David Engster <deng <at> randomsample.de>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.0.50;
	'byte-compile-error-on-warn' no effect on 'defvar ignored because X
	is let-bound' warning
Date: Mon, 18 Apr 2011 11:22:40 +0200

Here's the recipe:

* Create files

--- test.el ----
 (eval-when-compile
   (let ((test-something nil))
     (require 'test2)))
----------------

--- test2.el ----
 (defvar test-something t)
 (provide 'test2)
-----------------

* Now byte-compile the first file with

emacs --batch -L . --eval "(setq byte-compile-error-on-warn t)" -f batch-byte-compile test.el

Output will be:

Warning: defvar ignored because test-something is let-bound
Wrote /home/user/test.elc

with an exit code 0.

* Expected behavior: batch-byte-compile should return the warning as
  an error with exit code >0.


This was tested with Emacs bzr revno. 103887.

-David

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From: David Engster <deng <at> randomsample.de>
To: Glenn Morris <rgm <at> gnu.org>
Cc: 8518-done <at> debbugs.gnu.org
Subject: Re: bug#8518: 24.0.50;
	'byte-compile-error-on-warn' no effect on 'defvar ignored because X
	is let-bound' warning
Date: Tue, 19 Apr 2011 07:39:50 +0200

Glenn Morris writes:
> The warning does not come from the compiler, it comes from when the
> code is evaluated. You get the same result with:
>
> emacs -batch -L . -l ./test.el

Oh, you're right, of course. Sorry for the noise.

-David

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