diff options
Diffstat (limited to 'test/lisp/emacs-lisp/cl-macs-tests.el')
| -rw-r--r-- | test/lisp/emacs-lisp/cl-macs-tests.el | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/test/lisp/emacs-lisp/cl-macs-tests.el b/test/lisp/emacs-lisp/cl-macs-tests.el index 13da60ec45e..ced2cc10f30 100644 --- a/test/lisp/emacs-lisp/cl-macs-tests.el +++ b/test/lisp/emacs-lisp/cl-macs-tests.el @@ -666,7 +666,24 @@ collection clause." (should (pcase (macroexpand '(cl-labels ((len (xs n) (if xs (len (cdr xs) (1+ n)) n))) #'len)) - (`(function (lambda (,_ ,_) . ,_)) t)))) + (`(function (lambda (,_ ,_) . ,_)) t))) + + ;; Verify that there is no tail position inside dynamic variable bindings. + (defvar dyn-var) + (let ((dyn-var 'a)) + (cl-labels ((f (x) (if x + dyn-var + (let ((dyn-var 'b)) + (f dyn-var))))) + (should (equal (f nil) 'b)))) + + ;; Control: same as above but with lexical binding. + (let ((lex-var 'a)) + (cl-labels ((f (x) (if x + lex-var + (let ((lex-var 'b)) + (f lex-var))))) + (should (equal (f nil) 'a))))) (ert-deftest cl-macs--progv () (defvar cl-macs--test) |