diff options
Diffstat (limited to 'lisp/emacs-lisp/gv.el')
| -rw-r--r-- | lisp/emacs-lisp/gv.el | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lisp/emacs-lisp/gv.el b/lisp/emacs-lisp/gv.el index 94fe6c3d441..1fea38c49c1 100644 --- a/lisp/emacs-lisp/gv.el +++ b/lisp/emacs-lisp/gv.el @@ -260,6 +260,8 @@ The return value is the last VAL in the list. \(fn PLACE VAL PLACE VAL ...)" (declare (debug (&rest [gv-place form]))) + (if (/= (logand (length args) 1) 0) + (signal 'wrong-number-of-arguments (list 'setf (length args)))) (if (and args (null (cddr args))) (let ((place (pop args)) (val (car args))) @@ -534,7 +536,7 @@ This macro only makes sense when used in a place." "Return a reference to PLACE. This is like the `&' operator of the C language. Note: this only works reliably with lexical binding mode, except for very -simple PLACEs such as (function-symbol 'foo) which will also work in dynamic +simple PLACEs such as (function-symbol \\='foo) which will also work in dynamic binding mode." (let ((code (gv-letplace (getter setter) place |