Fix thinko in setting target options

From-SVN: r182747

gcc/ChangeLog

+2011-12-30  Michael Meissner  <meissner@linux.vnet.ibm.com>
+
+	* config/rs6000/rs6000.c (rs6000_inner_target_options): Fix thinko
+	in setting options via target #pragma or attribute.
+
 2011-12-30  Anatoly Sokolov  <aesok@post.ru>
 
 	* config/bfin/bfin.h (REGISTER_MOVE_COST, MEMORY_MOVE_COST): Remove.

gcc/config/rs6000/rs6000.c

@@ -27138,7 +27138,7 @@ rs6000_inner_target_options (tree args, bool attr_p)
 		    if (strcmp (r, rs6000_opt_vars[i].name) == 0)
 		      {
 			size_t j = rs6000_opt_vars[i].global_offset;
-			((int *) &global_options)[j] = !invert;
+			*((int *) ((char *)&global_options + j)) = !invert;
 			error_p = false;
 			break;
 		      }