* error.c (dump_expr): Use is_this_parameter.

From-SVN: r249104

gcc/cp/ChangeLog

 2017-06-11  Jason Merrill  <jason@redhat.com>
 
+	* error.c (dump_expr): Use is_this_parameter.
+
 	* cp-tree.h, decl2.c, mangle.c, parser.c, pt.c, semantics.c: Use
 	id_equal.
 

gcc/cp/error.c

@@ -2194,8 +2194,7 @@ dump_expr (cxx_pretty_printer *pp, tree t, int flags)
                            flags | TFF_EXPR_IN_PARENS);
 		pp_cxx_dot (pp);
 	      }
-	    else if (TREE_CODE (ob) != PARM_DECL
-		     || strcmp (IDENTIFIER_POINTER (DECL_NAME (ob)), "this"))
+	    else if (!is_this_parameter (ob))
 	      {
 		dump_expr (pp, ob, flags | TFF_EXPR_IN_PARENS);
 		pp_cxx_arrow (pp);
@@ -2276,9 +2275,7 @@ dump_expr (cxx_pretty_printer *pp, tree t, int flags)
 	if (INDIRECT_REF_P (ob))
 	  {
 	    ob = TREE_OPERAND (ob, 0);
-	    if (TREE_CODE (ob) != PARM_DECL
-		|| (DECL_NAME (ob)
-		    && strcmp (IDENTIFIER_POINTER (DECL_NAME (ob)), "this")))
+	    if (!is_this_parameter (ob))
 	      {
 		dump_expr (pp, ob, flags | TFF_EXPR_IN_PARENS);
 		if (TREE_CODE (TREE_TYPE (ob)) == REFERENCE_TYPE)