* lisp/emacs-lisp/cl-macs.el (cl-defstruct): Decl struct predicates as pure

diff --git a/lisp/emacs-lisp/cl-macs.el b/lisp/emacs-lisp/cl-macs.el
index 1852471bcbbf1fce5ea651e59897d3584f2b7008..9c9a778f045649aa17fd18c844326eac62150d70 100644 (file)
--- a/lisp/emacs-lisp/cl-macs.el
+++ b/lisp/emacs-lisp/cl-macs.el
@@ -3050,7 +3050,7 @@ To see the documentation for a defined struct type, use
                             `(,predicate cl-x))))
     (when pred-form
       (push `(,defsym ,predicate (cl-x)
-               (declare (side-effect-free error-free))
+               (declare (side-effect-free error-free) (pure t))
                ,(if (eq (car pred-form) 'and)
                     (append pred-form '(t))
                   `(and ,pred-form t)))