text: //===----------------------------------------------------------------------===//
  //
  //                     The LLVM Compiler Infrastructure
  //
  // This file is dual licensed under the MIT and the University of Illinois Open
  // Source Licenses. See LICENSE.TXT for details.
  //
  //===----------------------------------------------------------------------===//
  //
  // UNSUPPORTED: libcpp-has-no-threads
  
  // <thread>
  
  // class thread
  
  // unsigned hardware_concurrency();
  
  #include <thread>
  #include <cassert>
  
  int main()
  {
      assert(std::thread::hardware_concurrency() > 0);
  }
  