Fix uninit warning reported by Andrew Pinski.

pt.c (tsubst_copy, case SIZEOF_EXPR): Initialize len.

From-SVN: r134001

gcc/cp/ChangeLog

+2008-04-07  James E. Wilson  <wilson@tuliptree.org>
+
+	* pt.c (tsubst_copy, case SIZEOF_EXPR): Initialize len.
+
 2008-04-07  Jason Merrill  <jason@redhat.com>
 
 	PR c++/35734

gcc/cp/pt.c

@@ -9916,7 +9916,7 @@ tsubst_copy (tree t, tree args, tsubst_flags_t complain, tree in_decl)
           /* We only want to compute the number of arguments.  */
           tree expanded = tsubst_pack_expansion (TREE_OPERAND (t, 0), args,
                                                 complain, in_decl);
-	  int len;
+	  int len = 0;
 
 	  if (TREE_CODE (expanded) == TREE_VEC)
 	    len = TREE_VEC_LENGTH (expanded);