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Diffstat (limited to 'lisp/emacs-lisp/cl-generic.el')
| -rw-r--r-- | lisp/emacs-lisp/cl-generic.el | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lisp/emacs-lisp/cl-generic.el b/lisp/emacs-lisp/cl-generic.el index 983694204df..5090e060372 100644 --- a/lisp/emacs-lisp/cl-generic.el +++ b/lisp/emacs-lisp/cl-generic.el @@ -604,7 +604,9 @@ The set of acceptable TYPEs (also called \"specializers\") is defined (defun cl--generic-get-dispatcher (dispatch) (with-memoization - (gethash dispatch cl--generic-dispatchers) + ;; We need `copy-sequence` here because this `dispatch' object might be + ;; modified by side-effect in `cl-generic-define-method' (bug#46722). + (gethash (copy-sequence dispatch) cl--generic-dispatchers) ;; (message "cl--generic-get-dispatcher (%S)" dispatch) (let* ((dispatch-arg (car dispatch)) (generalizers (cdr dispatch)) |