From: Alan Mackenzie <acm@muc.de>
To: 6750@debbugs.gnu.org
Subject: bug#6750: Byte compiler: spurious message "cl used at runtime"
Date: Wed, 28 Jul 2010 18:15:53 +0000 [thread overview]
Message-ID: <20100728181553.GC2999@muc.de> (raw)
Hi, Emacs,
In this macro declaration:
(defmacro c-declare-lang-variables ()
`(progn
,@(mapcan (lambda (init)
`(,(if (elt init 2)
`(defvar ,(car init) nil ,(elt init 2))
`(defvar ,(car init) nil))
(make-variable-buffer-local ',(car init))))
(cdr c-lang-variable-inits))))
, (from cc-engine.el), the byte-compiler gives this warning:
"Function `mapcan' from cl package called at runtime".
It is clear that the mapcan, being within a ,@ construct, does its work
at macro-expansion time, i.e. compile time.
Thus the warning message is wrong. This is a bug.
--
Alan Mackenzie (Nuremberg, Germany).
next reply other threads:[~2010-07-28 18:15 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-28 18:15 Alan Mackenzie [this message]
2010-07-28 23:01 ` bug#6750: Byte compiler: spurious message "cl used at runtime" Stefan Monnier
2010-07-29 19:03 ` Alan Mackenzie
2010-07-29 19:51 ` Juanma Barranquero
2010-07-30 9:18 ` Stefan Monnier
2011-07-14 13:28 ` Lars Magne Ingebrigtsen
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