libstdc++-v3/testsuite/30_threads/thread/cons/69724.cc

   1 // Copyright (C) 2019-2021 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-do run }
  19 // { dg-options "-pthread"  }
  20 // { dg-require-effective-target c++11 }
  21 // { dg-require-effective-target pthread }
  22 // { dg-require-gthreads "" }
  23
  24 #include <thread>
  25 #include <testsuite_rvalref.h>
  26
  27 struct F : __gnu_test::copycounter
  28 {
  29   F() = default;
  30
  31   F(const F&) = default;
  32
  33   // Move constructor copies base class, to use counter:
  34   F(F&& f) : copycounter(f) { f.valid = false; }
  35
  36   void run() { VERIFY(this->valid); }
  37 };
  38
  39 void
  40 test01()
  41 {
  42   std::thread{&F::run, F{}}.join();
  43   VERIFY( F::copycount == 1 );
  44 }
  45
  46 void
  47 test02()
  48 {
  49   F::copycount = 0;
  50   const F f;
  51   std::thread{&F::run, f}.join();
  52   VERIFY( F::copycount == 1 );
  53 }
  54
  55 void
  56 test03()
  57 {
  58   F::copycount = 0;
  59   F f;
  60   std::thread{&F::run, std::ref(f)}.join();
  61   VERIFY( F::copycount == 0 );
  62 }
  63
  64 int
  65 main()
  66 {
  67   test01();
  68   test02();
  69   test03();
  70 }