* fold-const.c (fold_unary): Use build1 instead of copy_node.

From-SVN: r95989

gcc/ChangeLog

@@ -4,6 +4,8 @@
 
 	* cse.c (cse_reg_info_table): Make it static.
 
+	* fold-const.c (fold_unary): Use build1 instead of copy_node.
+
 2005-03-06  Zdenek Dvorak  <dvorakz@suse.cz>
 
 	* cse.c (find_best_addr): Use canon_for_address.

gcc/fold-const.c

@@ -6808,8 +6808,7 @@ fold_unary (tree expr)
 	{
 	  /* Don't leave an assignment inside a conversion
 	     unless assigning a bitfield.  */
-	  tem = copy_node (t);
-	  TREE_OPERAND (tem, 0) = TREE_OPERAND (op0, 1);
+	  tem = build1 (code, type, TREE_OPERAND (op0, 1));
 	  /* First do the assignment, then return converted constant.  */
 	  tem = build2 (COMPOUND_EXPR, TREE_TYPE (tem), op0, fold (tem));
 	  TREE_NO_WARNING (tem) = 1;