Fix error with `mark-defun' and "protected:" in C++ Mode.

Fixes: debbugs:19134.

progmodes/cc-cmds.el (c-where-wrt-brace-construct): Handle a return code
of (label) from c-beginning-of-decl-1.

2 files changed, 16 insertions, 4 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 4c7b58341dd..422336332bf 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,11 @@
+2014-11-22  Alan Mackenzie  <acm@muc.de>
+
+        Fix error with `mark-defun' and "protected:" in C++ Mode.
+        Fixes: debbugs:19134.
+
+        * progmodes/cc-cmds.el (c-where-wrt-brace-construct): Handle a
+        return code of (label) from c-beginning-of-decl-1.
+
 2014-11-22  Ulf Jasper  <ulf.jasper@web.de>
 
         * net/newst-backend.el (newsticker--sentinel-work): Tell
diff --git a/lisp/progmodes/cc-cmds.el b/lisp/progmodes/cc-cmds.el
index 5fa3b25401e..50cdd78ec36 100644
--- a/lisp/progmodes/cc-cmds.el
+++ b/lisp/progmodes/cc-cmds.el
@@ -1417,12 +1417,15 @@ No indentation or other \"electric\" behavior is performed."
               (car (c-beginning-of-decl-1
                     ;; NOTE: If we're in a K&R region, this might be the start
                     ;; of a parameter declaration, not the actual function.
+                    ;; It might also leave us at a label or "label" like
+                    ;; "private:".
                     (and least-enclosing ; LIMIT for c-b-of-decl-1
                          (c-safe-position least-enclosing paren-state)))))
 
         ;; Has the declaration we've gone back to got braces?
-        (setq brace-decl-p
-              (save-excursion
+        (or (eq decl-result 'label)
+            (setq brace-decl-p
+                  (save-excursion
                     (and (c-syntactic-re-search-forward "[;{]" nil t t)
                          (or (eq (char-before) ?\{)
                              (and c-recognize-knr-p
@@ -1430,10 +1433,11 @@ No indentation or other \"electric\" behavior is performed."
                                   ;; ';' in a K&R argdecl.  In
                                   ;; that case the declaration
                                   ;; should contain a block.
-                                  (c-in-knr-argdecl))))))
+                                  (c-in-knr-argdecl)))))))
 
         (cond
-         ((= (point) kluge-start)       ; might be BOB or unbalanced parens.
+         ((or (eq decl-result 'label)   ; e.g. "private:" or invalid syntax.
+              (= (point) kluge-start))  ; might be BOB or unbalanced parens.
           'outwith-function)
          ((eq decl-result 'same)
           (if brace-decl-p