Correct two search limits in c-before-change-check_<>-operators.

lisp/ChangeLog

+2012-04-11  Alan Mackenzie  <acm@muc.de>
+
+	* progmodes/cc-engine.el (c-before-change-check-<>-operators):
+	Correct two search limits.
+
 2012-04-10  Stefan Monnier  <monnier@iro.umontreal.ca>
 
 	* startup.el (command-line-1): Inhibit splash from daemon (bug#10996).

lisp/progmodes/cc-engine.el

@@ -5382,7 +5382,7 @@ comment at the start of cc-engine.el for more info."
 	  new-beg new-end need-new-beg need-new-end)
       ;; Locate the barrier before the changed region
       (goto-char  (if beg-lit-limits (car beg-lit-limits) beg))
-      (c-syntactic-skip-backward "^;{}" (max (- beg 2048) (point-min)))
+      (c-syntactic-skip-backward "^;{}" (c-determine-limit 512))
       (setq new-beg (point))
 
       ;; Remove the syntax-table properties from each pertinent <...> pair.
@@ -5393,8 +5393,7 @@ comment at the start of cc-engine.el for more info."
 
       ;; Locate the barrier after END.
       (goto-char (if end-lit-limits (cdr end-lit-limits) end))
-      (c-syntactic-re-search-forward "[;{}]"
-				     (min (+ end 2048) (point-max)) 'end)
+      (c-syntactic-re-search-forward "[;{}]" (c-determine-+ve-limit 512) 'end)
       (setq new-end (point))
 
       ;; Remove syntax-table properties from the remaining pertinent <...>