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-rw-r--r--test/lisp/emacs-lisp/bytecomp-tests.el23
1 files changed, 23 insertions, 0 deletions
diff --git a/test/lisp/emacs-lisp/bytecomp-tests.el b/test/lisp/emacs-lisp/bytecomp-tests.el
index e8feec31d26..3624904753c 100644
--- a/test/lisp/emacs-lisp/bytecomp-tests.el
+++ b/test/lisp/emacs-lisp/bytecomp-tests.el
@@ -506,6 +506,29 @@ bytecompiled code, and their results compared.")
(dolist (pat bytecomp-lexbind-tests)
(should (bytecomp-lexbind-check-1 pat))))
+(defmacro bytecomp-tests--with-temp-file (file-name-var &rest body)
+ (declare (indent 1))
+ (cl-check-type file-name-var symbol)
+ `(let ((,file-name-var (make-temp-file "emacs")))
+ (unwind-protect
+ (progn ,@body)
+ (delete-file ,file-name-var))))
+
+(ert-deftest bytecomp-tests--unescaped-char-literals ()
+ "Check that byte compiling warns about unescaped character
+literals (Bug#20852)."
+ (should (boundp 'lread--unescaped-character-literals))
+ (bytecomp-tests--with-temp-file source
+ (write-region "(list ?) ?( ?; ?\" ?[ ?])" nil source)
+ (bytecomp-tests--with-temp-file destination
+ (let* ((byte-compile-dest-file-function (lambda (_) destination))
+ (byte-compile-error-on-warn t)
+ (byte-compile-debug t)
+ (err (should-error (byte-compile-file source))))
+ (should (equal (cdr err)
+ (list (concat "unescaped character literals "
+ "\", (, ), ;, [, ] detected!"))))))))
+
;; Local Variables:
;; no-byte-compile: t
;; End: