Commit 98bfac68 authored by Philipp Stephani's avatar Philipp Stephani
Browse files

Validate SPEC of `dolist', cf. Bug#25477.

* lisp/subr.el (dolist): Test type and length of SPEC.
* test/lisp/subr-tests.el (subr-tests--dolist--wrong-number-of-args):
Add unit test.
parent 5ea696fd
......@@ -190,6 +190,10 @@ Then evaluate RESULT to get return value, default nil.
\(fn (VAR LIST [RESULT]) BODY...)"
(declare (indent 1) (debug ((symbolp form &optional form) body)))
(unless (consp spec)
(signal 'wrong-type-argument (list 'consp spec)))
(unless (<= 2 (length spec) 3)
(signal 'wrong-number-of-arguments (list '(2 . 3) (length spec))))
;; It would be cleaner to create an uninterned symbol,
;; but that uses a lot more space when many functions in many files
;; use dolist.
......@@ -281,5 +281,15 @@ indirectly `mapbacktrace'."
(should (equal (string-match-p "\\`[[:blank:]]\\'" "\u3000") 0))
(should-not (string-match-p "\\`[[:blank:]]\\'" "\N{LINE SEPARATOR}")))
(ert-deftest subr-tests--dolist--wrong-number-of-args ()
"Test that `dolist' doesn't accept wrong types or length of SPEC,
cf. Bug#25477."
(should-error (eval '(dolist (a)))
:type 'wrong-number-of-arguments)
(should-error (eval '(dolist (a () 'result 'invalid)) t)
:type 'wrong-number-of-arguments)
(should-error (eval '(dolist "foo") t)
:type 'wrong-type-argument))
(provide 'subr-tests)
;;; subr-tests.el ends here
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