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: c++98, c++03, c++11
  // <experimental/system_error>
  
  #include <experimental/system_error>
  
  #ifndef _LIBCPP_SYSTEM_ERROR
  #  error "<experimental/system_error> must include <system_error>"
  #endif
  
  int main()
  {
  }
  