PR c++/71285 - member of fold-expression

	* semantics.c (finish_unary_fold_expr)
	(finish_binary_fold_expr): Use null type for fold-expressions.

From-SVN: r245340

gcc/cp/ChangeLog

 2017-02-10  Jason Merrill  <jason@redhat.com>
 
+	PR c++/71285 - member of fold-expression
+	* semantics.c (finish_unary_fold_expr)
+	(finish_binary_fold_expr): Use null type for fold-expressions.
+
 	PR c++/79401 - protected inherited constructor
 	* call.c (enforce_access): For inheriting constructor, find a base
 	binfo in the path we already have.

gcc/cp/semantics.c

@@ -9437,7 +9437,7 @@ finish_unary_fold_expr (tree expr, int op, tree_code dir)
 
   // Build the fold expression.
   tree code = build_int_cstu (integer_type_node, abs (op));
-  tree fold = build_min (dir, unknown_type_node, code, pack);
+  tree fold = build_min_nt_loc (UNKNOWN_LOCATION, dir, code, pack);
   FOLD_EXPR_MODIFY_P (fold) = (op < 0);
   return fold;
 }
@@ -9463,7 +9463,7 @@ finish_binary_fold_expr (tree pack, tree init, int op, tree_code dir)
 {
   pack = make_pack_expansion (pack);
   tree code = build_int_cstu (integer_type_node, abs (op));
-  tree fold = build_min (dir, unknown_type_node, code, pack, init);
+  tree fold = build_min_nt_loc (UNKNOWN_LOCATION, dir, code, pack, init);
   FOLD_EXPR_MODIFY_P (fold) = (op < 0);
   return fold;
 }

gcc/testsuite/g++.dg/cpp1z/fold9.C

+// PR c++/71285
+// { dg-options -std=c++1z }
+
+template<typename... Args>
+void spurious(Args... args)
+{
+    (... + args).member;
+}
+
+int main()
+{
+}