Subject: Re: bug#19699: 25.0.50; lexical-let + mapcar cause infloop
From: Katsumi Yamaoka <[email-masked]>
To: [email-masked]
Date: Wed, 28 Jan 2015 08:55:39 +0900
List-Id: <debbugs-submit.debbugs.gnu.org>

On Tue, 27 Jan 2015 17:06:44 +0900, Katsumi Yamaoka wrote:
> A Lisp form that uses `lexical-let' and `mapcar' (or `mapc'),
> like this, cannot be evaluated nor byte-compiled because it
> looks like causing an infinite loop[1].

Oops, this is my fault that was made as the revno
<1fe087a1ab4182b2e6c1d05444461acc4e78e2d8> in cl.el.

> (defun testing ()
>   (lexical-let (var)
>     (mapcar #'identity '("Hello" "World"))))

The cause of the infinite loop is that the macro expander tries
to expand #'foo again and again.  Fixed.