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

From: Glenn Morris <[email-masked]>
Date: Mon, 18 Apr 2011 13:37:45 -0400

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