--- 1.1	1994/10/29 16:46:46
+++ expr.c	1994/10/29 16:48:43
@@ -4386,8 +4386,8 @@
 
 	    /* Convert the integer argument to a type the same size as a
 	       pointer so the multiply won't overflow spuriously.  */
-	    if (TYPE_PRECISION (index_type) != POINTER_SIZE)
-	      index = convert (type_for_size (POINTER_SIZE, 0), index);
+	    if (TYPE_MODE (index_type) != Pmode)
+	      index = convert (type_for_mode (Pmode, 0), index);
 
 	    if (TREE_CODE (size) != INTEGER_CST
 		&& contains_placeholder_p (size))