class.c (currently_open_class): Make sure we're dealing with the main variant.

	* class.c (currently_open_class): Make sure we're dealing with the
	main variant.

From-SVN: r151529

gcc/cp/ChangeLog

 2009-09-03  Jason Merrill  <jason@redhat.com>
 
+	* class.c (currently_open_class): Make sure we're dealing with the
+	main variant.
+
 	* cp-tree.h (enum overload_flags): Remove OP_FLAG.
 	* method.c (lazily_declare_fn): Check for dtorness in ABI warning.
 

gcc/cp/class.c

@@ -5846,6 +5846,8 @@ currently_open_class (tree t)
   if (!CLASS_TYPE_P (t))
     return false;
 
+  t = TYPE_MAIN_VARIANT (t);
+
   /* We start looking from 1 because entry 0 is from global scope,
      and has no type.  */
   for (i = current_class_depth; i > 0; --i)