libstdc++-v3/testsuite/20_util/is_invocable/incomplete_args_neg.cc

   1 // { dg-do compile { target c++17 } }
   2
   3 // Copyright (C) 2020-2022 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // { dg-error "must be a complete class" "" { target *-*-* } 0 }
  21
  22 #include <type_traits>
  23
  24 class X;
  25
  26 void test01()
  27 {
  28   std::is_invocable<int(X), X>();               // { dg-error "required from here" }
  29   std::is_invocable<int(int, X), int, X>();             // { dg-error "required from here" }
  30   std::is_invocable<int(int, X), X, int>();             // { dg-error "required from here" }
  31
  32
  33   std::is_invocable<int(X&), X&>();             // { dg-bogus "required from here" }
  34   std::is_invocable<int(int, X&), int, X&>();           // { dg-bogus "required from here" }
  35
  36   std::is_invocable<int(X&&), X&&>();           // { dg-bogus "required from here" }
  37   std::is_invocable<int(int, X&&), int, X&&>();         // { dg-bogus "required from here" }
  38
  39   std::is_invocable<int(const X&&), const X&&>();               // { dg-bogus "required from here" }
  40   std::is_invocable<int(int, const X&&), int, const X&&>();             // { dg-bogus "required from here" }
  41
  42   std::is_invocable<int(const X&), const X&>();         // { dg-bogus "required from here" }
  43   std::is_invocable<int(int, const X&), int, const X&>();               // { dg-bogus "required from here" }
  44
  45   std::is_invocable<int(const X&), X&>();               // { dg-bogus "required from here" }
  46   std::is_invocable<int(int, const X&), int, X&>();             // { dg-bogus "required from here" }
  47 }
  48
  49 void test02()
  50 {
  51   std::is_invocable_r<int, int(X), X>();                // { dg-error "required from here" }
  52   std::is_invocable_r<int, int(int, X), int, X>();              // { dg-error "required from here" }
  53   std::is_invocable_r<int, int(int, X), X, int>();              // { dg-error "required from here" }
  54
  55
  56   std::is_invocable_r<int, int(X&), X&>();              // { dg-bogus "required from here" }
  57   std::is_invocable_r<int, int(int, X&), int, X&>();            // { dg-bogus "required from here" }
  58
  59   std::is_invocable_r<int, int(X&&), X&&>();            // { dg-bogus "required from here" }
  60   std::is_invocable_r<int, int(int, X&&), int, X&&>();          // { dg-bogus "required from here" }
  61
  62   std::is_invocable_r<int, int(const X&&), const X&&>();                // { dg-bogus "required from here" }
  63   std::is_invocable_r<int, int(int, const X&&), int, const X&&>();              // { dg-bogus "required from here" }
  64
  65   std::is_invocable_r<int, int(const X&), const X&>();          // { dg-bogus "required from here" }
  66   std::is_invocable_r<int, int(int, const X&), int, const X&>();                // { dg-bogus "required from here" }
  67
  68   std::is_invocable_r<int, int(const X&), X&>();                // { dg-bogus "required from here" }
  69   std::is_invocable_r<int, int(int, const X&), int, X&>();              // { dg-bogus "required from here" }
  70 }