libstdc++-v3/testsuite/29_atomics/headers/atomic/types_std_c++2a_neg.cc

   1 // { dg-options "-std=gnu++2a" }
   2 // { dg-do compile { target c++2a } }
   3
   4 // Copyright (C) 2019-2020 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11 //
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16 //
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 #include <atomic>
  22
  23 void test01()
  24 {
  25   // Not global scoped, only namespace std.
  26   using memory_order; // { dg-error "expected nested-name-specifier" }
  27   constexpr auto relaxed = memory_order::relaxed; // { dg-error "has not been declared" }
  28   constexpr auto consume = memory_order::consume; // { dg-error "has not been declared" }
  29   constexpr auto acquire = memory_order::acquire; // { dg-error "has not been declared" }
  30   constexpr auto release = memory_order::release; // { dg-error "has not been declared" }
  31   constexpr auto acq_rel = memory_order::acq_rel; // { dg-error "has not been declared" }
  32   constexpr auto seq_cst = memory_order::seq_cst; // { dg-error "has not been declared" }
  33 }