* lisp/simple.el (save-mark-and-excursion): Add declare forms.

[gnu-emacs] / lisp / xml.el

diff --git a/lisp/xml.el b/lisp/xml.el
index 7a853d98cc6f95fb36223c7e1deeda3a22e09604..414300cb40207259c7de62d90f8572447c5c0ed0 100644 (file)
--- a/lisp/xml.el
+++ b/lisp/xml.el
@@ -1,6 +1,6 @@
 ;;; xml.el --- XML parser
 
-;; Copyright (C) 2000-2015 Free Software Foundation, Inc.
+;; Copyright (C) 2000-2016 Free Software Foundation, Inc.
 
 ;; Author: Emmanuel Briot  <briot@gnat.com>
 ;; Maintainer: Mark A. Hershberger <mah@everybody.org>
@@ -579,7 +579,14 @@ Return one of:
        (error "XML: (Well-Formed) Invalid character"))
       ;; However, if we're parsing incrementally, then we need to deal
       ;; with stray CDATA.
-      (xml-parse-string)))))
+      (let ((s (xml-parse-string)))
+        (when (zerop (length s))
+          ;; We haven't consumed any input! We must throw an error in
+          ;; order to prevent looping forever.
+          (error "XML: (Not Well-Formed) Could not parse: %s"
+                 (buffer-substring-no-properties
+                  (point) (min (+ (point) 10) (point-max)))))
+        s)))))
 
 (defun xml-parse-string ()
   "Parse character data at point, and return it as a string.