struct_objc_class.h: Add padding to avoid warning with -Wpadded.

2010-09-30  Kai Tietz  <kai.tietz@onevision.com>

        * objc/deprecated/struct_objc_class.h: Add padding
        to avoid warning with -Wpadded.

From-SVN: r164746

libobjc/ChangeLog

+2010-09-30  Kai Tietz  <kai.tietz@onevision.com>
+
+	* objc/deprecated/struct_objc_class.h: Add padding
+	to avoid warning with -Wpadded.
+
 2010-09-26  Nicola Pero  <nicola.pero@meta-innovation.com>
 
 	* encoding.c (objc_sizeof_type): Added support for vector type and

libobjc/objc/deprecated/struct_objc_class.h

@@ -24,6 +24,16 @@ struct objc_class {
                                                 The sum of the class 
 						definition and all super 
 						class definitions. */
+#ifdef _WIN64
+  /* We pad the structure manually to prevent warning when -Wpadded
+     is used.  The compiler automatically pads the structures that it
+     generates, so this manually padded structure still matches the one
+     generated by the compiler, but if we don't pad manually, -Wpadded
+     detects that padding is being added and generates annoying warnings.
+     This hack is necessary as on LLP64 targets sizeof (long) isn't equal
+     to sizeof (void *).  */
+  long pad;
+#endif
   struct objc_ivar_list* ivars;               /* Pointer to a structure that
                                                 describes the instance 
                                                 variables in the class
@@ -42,3 +52,4 @@ struct objc_class {
   struct objc_protocol_list *protocols;	      /* Protocols conformed to */
   void* gc_object_type;
 };
+