libstdc++-v3/testsuite/30_threads/packaged_task/cons/2.cc

   1 // { dg-do run }
   2 // { dg-options "-pthread"  }
   3 // { dg-require-effective-target c++11 }
   4 // { dg-require-effective-target pthread }
   5 // { dg-require-gthreads "" }
   6
   7 // Copyright (C) 2009-2020 Free Software Foundation, Inc.
   8 //
   9 // This file is part of the GNU ISO C++ Library.  This library is free
  10 // software; you can redistribute it and/or modify it under the
  11 // terms of the GNU General Public License as published by the
  12 // Free Software Foundation; either version 3, or (at your option)
  13 // any later version.
  14
  15 // This library is distributed in the hope that it will be useful,
  16 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 // GNU General Public License for more details.
  19
  20 // You should have received a copy of the GNU General Public License along
  21 // with this library; see the file COPYING3.  If not see
  22 // <http://www.gnu.org/licenses/>.
  23
  24
  25 #include <future>
  26 #include <testsuite_hooks.h>
  27 #include <testsuite_tr1.h>
  28
  29 using namespace __gnu_test;
  30
  31 int f1() { return 0; }
  32 int& f2() { static int i; return i; }
  33 void f3() { }
  34 ClassType f4() { return ClassType(); }
  35
  36 struct Derived : AbstractClass {
  37   void rotate(int) { }
  38   Derived& operator()(int i) { rotate(i); return *this; }
  39 } f5;
  40
  41 void test01()
  42 {
  43   using std::packaged_task;
  44
  45   packaged_task<int ()> p1(f1);
  46   VERIFY( p1.valid() );
  47   packaged_task<int& ()> p2(f2);
  48   VERIFY( p2.valid() );
  49   packaged_task<void ()> p3(f3);
  50   VERIFY( p3.valid() );
  51   packaged_task<ClassType ()> p4(f4);
  52   VERIFY( p4.valid() );
  53   packaged_task<AbstractClass& (int)> p5(f5);
  54   VERIFY( p5.valid() );
  55 }
  56
  57 int main()
  58 {
  59   test01();
  60   return 0;
  61 }