[Emacs-diffs] Changes to emacs/lisp/emacs-lisp/bytecomp.el,v

[Glenn Morris]

CVSROOT:        /sources/emacs
Module name:    emacs
Changes by:     Glenn Morris <gm>       07/09/21 04:24:19

Index: bytecomp.el
===================================================================
RCS file: /sources/emacs/emacs/lisp/emacs-lisp/bytecomp.el,v
retrieving revision 2.209
retrieving revision 2.210
diff -u -b -r2.209 -r2.210
--- bytecomp.el 7 Sep 2007 15:04:08 -0000       2.209
+++ bytecomp.el 21 Sep 2007 04:24:18 -0000      2.210
@@ -2831,6 +2831,10 @@
 (defun byte-compile-normal-call (form)
   (if byte-compile-generate-call-tree
       (byte-compile-annotate-call-tree form))
+  (when (and for-effect (eq (car form) 'mapcar))
+    (byte-compile-set-symbol-position 'mapcar)
+    (byte-compile-warn
+     "`mapcar' called for effect; use `mapc' or `dolist' instead"))
   (byte-compile-push-constant (car form))
   (mapc 'byte-compile-form (cdr form)) ; wasteful, but faster.
   (byte-compile-out 'byte-call (length (cdr form))))