Fix wrong bound to c-font-lock-declarators. Fixes bug #18948.

progmodes/cc-fonts.el (c-font-lock-declarations): Pass "(point-max)" as
bound to c-font-lock-declarators, not "limit", as the buffer is sometimes
narrowed to less than "limit" (e.g., in the presence of macros).

2 files changed, 11 insertions, 1 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 4a3b1dcd96a..111f98b8d4e 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,11 @@
+2014-11-05  Alan Mackenzie  <acm@muc.de>
+
+        Fix wrong bound to c-font-lock-declarators.  Fixes bug #18948.
+        * progmodes/cc-fonts.el (c-font-lock-declarations): Pass
+        "(point-max)" as bound to c-font-lock-declarators, not "limit", as
+        the buffer is sometimes narrowed to less than "limit" (e.g., in
+        the presence of macros).
+
 2014-11-05  Michael Albinus  <michael.albinus@gmx.de>
 
         * net/tramp.el (tramp-error-with-buffer): Show connection buffer
diff --git a/lisp/progmodes/cc-fonts.el b/lisp/progmodes/cc-fonts.el
index bf5630da045..6ebd6c6a8fc 100644
--- a/lisp/progmodes/cc-fonts.el
+++ b/lisp/progmodes/cc-fonts.el
@@ -1279,6 +1279,8 @@ casts and declarations are fontified.  Used on level 2 and higher."
        c-font-lock-maybe-decl-faces
 
        (lambda (match-pos inside-macro)
+         ;; Note to maintainers: don't use `limit' inside this lambda form;
+         ;; c-find-decl-spots sometimes narrows to less than `limit'.
          (setq start-pos (point))
          (when
           ;; The result of the form below is true when we don't recognize a
@@ -1507,7 +1509,7 @@ casts and declarations are fontified.  Used on level 2 and higher."
                         ;; At a real declaration?
                         (if (memq (c-forward-type t) '(t known found))
                             (progn
-                              (c-font-lock-declarators limit t is-typedef)
+                              (c-font-lock-declarators (point-max) t is-typedef)
                               nil)
                           ;; False alarm.  Return t to go on to the next check.
                           (goto-char start-pos)