1  /* Minimal implementation of make_unique for C++11 compatibility.
       2     Copyright (C) 2022-2023 Free Software Foundation, Inc.
       3  
       4  This file is part of GCC.
       5  
       6  GCC is free software; you can redistribute it and/or modify it under
       7  the terms of the GNU General Public License as published by the Free
       8  Software Foundation; either version 3, or (at your option) any later
       9  version.
      10  
      11  GCC is distributed in the hope that it will be useful, but WITHOUT ANY
      12  WARRANTY; without even the implied warranty of MERCHANTABILITY or
      13  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      14  for more details.
      15  
      16  You should have received a copy of the GNU General Public License
      17  along with GCC; see the file COPYING3.  If not see
      18  <http://www.gnu.org/licenses/>.  */
      19  
      20  #ifndef GCC_MAKE_UNIQUE
      21  #define GCC_MAKE_UNIQUE
      22  
      23  /* This header uses std::unique_ptr, but <memory> can't be directly
      24     included due to issues with macros.  Hence <memory> must be included
      25     from system.h by defining INCLUDE_MEMORY in any source file using
      26     make-unique.h.  */
      27  
      28  #ifndef INCLUDE_MEMORY
      29  # error "You must define INCLUDE_MEMORY before including system.h to use make-unique.h"
      30  #endif
      31  
      32  #include <type_traits>
      33  
      34  /* Minimal implementation of make_unique for C++11 compatibility
      35     (std::make_unique is C++14).  */
      36  
      37  template<typename T, typename... Args>
      38  inline typename std::enable_if<!std::is_array<T>::value, std::unique_ptr<T>>::type
      39  make_unique(Args&&... args)
      40  {
      41    return std::unique_ptr<T> (new T (std::forward<Args> (args)...));
      42  }
      43  
      44  #endif /* ! GCC_MAKE_UNIQUE */