* lisp/progmodes/perl-mode.el (perl-indent-new-calculate):

Handle forward-sexp failure.

Fixes: debbugs:16985

lisp/ChangeLog

+2014-04-02  Stefan Monnier  <monnier@iro.umontreal.ca>
+
+	* progmodes/perl-mode.el (perl-indent-new-calculate):
+	Handle forward-sexp failure (bug#16985).
+
 2014-04-02  Glenn Morris  <rgm@gnu.org>
 	* menu-bar.el (menu-bar-file-menu):
@@ -210,6 +215,7 @@
 	(electric-indent-mode): Don't mess with the global map any more.
 	Don't drop the post-self-insert-hook is some buffer is still using it
 	(bug#16770).
+
 	* bindings.el (global-map): Remove C-j binding.
 	* emacs-lisp/nadvice.el (advice--make-docstring): Try harder to find

lisp/progmodes/perl-mode.el

@@ -854,11 +854,12 @@ changed by, or (parse-state) if line starts in a quoted string."
    (and (= (char-syntax (following-char)) ?\))
 	(save-excursion
 	  (forward-char 1)
-	  (forward-sexp -1)
-	  (perl-indent-new-calculate
-           ;; Recalculate the parsing-start, since we may have jumped
-           ;; dangerously close (typically in the case of nested functions).
-           'virtual nil (save-excursion (perl-beginning-of-function)))))
+          (when (condition-case nil (progn (forward-sexp -1) t)
+                  (scan-error nil))
+            (perl-indent-new-calculate
+             ;; Recalculate the parsing-start, since we may have jumped
+             ;; dangerously close (typically in the case of nested functions).
+             'virtual nil (save-excursion (perl-beginning-of-function))))))
    (and (and (= (following-char) ?{)
 	     (save-excursion (forward-char) (perl-hanging-paren-p)))
 	(+ (or default (perl-calculate-indent parse-start))