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  1. // The -*- C++ -*- dynamic memory management header.
  2.  
  3. // Copyright (C) 1994, 1996, 1997, 1998, 2000, 2001, 2002
  4. // Free Software Foundation
  5.  
  6. // This file is part of GCC.
  7. //
  8. // GCC is free software; you can redistribute it and/or modify
  9. // it under the terms of the GNU General Public License as published by
  10. // the Free Software Foundation; either version 2, or (at your option)
  11. // any later version.
  12. // 
  13. // GCC is distributed in the hope that it will be useful,
  14. // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15. // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16. // GNU General Public License for more details.
  17. // 
  18. // You should have received a copy of the GNU General Public License
  19. // along with GCC; see the file COPYING.  If not, write to
  20. // the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  21. // Boston, MA 02110-1301, USA.
  22.  
  23. // As a special exception, you may use this file as part of a free software
  24. // library without restriction.  Specifically, if other files instantiate
  25. // templates or use macros or inline functions from this file, or you compile
  26. // this file and link it with other files to produce an executable, this
  27. // file does not by itself cause the resulting executable to be covered by
  28. // the GNU General Public License.  This exception does not however
  29. // invalidate any other reasons why the executable file might be covered by
  30. // the GNU General Public License.
  31.  
  32. /** @file new
  33.  *  The header @c new defines several functions to manage dynamic memory and
  34.  *  handling memory allocation errors; see
  35.  *  http://g...content-available-to-author-only...u.org/onlinedocs/libstdc++/18_support/howto.html#4 for more.
  36.  */
  37.  
  38. #ifndef _NEW
  39. #define _NEW
  40.  
  41. #include <cstddef>
  42. #include <exception>
  43.  
  44. #pragma GCC visibility push(default)
  45.  
  46. extern "C++" {
  47.  
  48. namespace std 
  49. {
  50.   /**
  51.    *  @brief  Exception possibly thrown by @c new.
  52.    *
  53.    *  @c bad_alloc (or classes derived from it) is used to report allocation
  54.    *  errors from the throwing forms of @c new.  */
  55.   class bad_alloc : public exception 
  56.   {
  57.   public:
  58.     bad_alloc() throw() { }
  59.     // This declaration is not useless:
  60.     // http://g...content-available-to-author-only...u.org/onlinedocs/gcc-3.0.2/gcc_6.html#SEC118
  61.     virtual ~bad_alloc() throw();
  62.   };
  63.  
  64.   struct nothrow_t { };
  65.   extern const nothrow_t nothrow;
  66.   /** If you write your own error handler to be called by @c new, it must
  67.    *  be of this type.  */
  68.   typedef void (*new_handler)();
  69.   /// Takes a replacement handler as the argument, returns the previous handler.
  70.   new_handler set_new_handler(new_handler) throw();
  71. } // namespace std
  72.  
  73. //@{
  74. /** These are replaceable signatures:
  75.  *  - normal single new and delete (no arguments, throw @c bad_alloc on error)
  76.  *  - normal array new and delete (same)
  77.  *  - @c nothrow single new and delete (take a @c nothrow argument, return
  78.  *    @c NULL on error)
  79.  *  - @c nothrow array new and delete (same)
  80.  *
  81.  *  Placement new and delete signatures (take a memory address argument,
  82.  *  does nothing) may not be replaced by a user's program.
  83. */
  84. void* operator new(std::size_t) throw (std::bad_alloc);
  85. void* operator new[](std::size_t) throw (std::bad_alloc);
  86. void operator delete(void*) throw();
  87. void operator delete[](void*) throw();
  88. void* operator new(std::size_t, const std::nothrow_t&) throw();
  89. void* operator new[](std::size_t, const std::nothrow_t&) throw();
  90. void operator delete(void*, const std::nothrow_t&) throw();
  91. void operator delete[](void*, const std::nothrow_t&) throw();
  92.  
  93. // Default placement versions of operator new.
  94. inline void* operator new(std::size_t, void* __p) throw() { return __p; }
  95. inline void* operator new[](std::size_t, void* __p) throw() { return __p; }
  96.  
  97. // Default placement versions of operator delete.
  98. inline void  operator delete  (void*, void*) throw() { }
  99. inline void  operator delete[](void*, void*) throw() { }
  100. //@}
  101. } // extern "C++"
  102.  
  103. #pragma GCC visibility pop
  104.  
  105. #endif
  106.  
  107. int main ()
  108. {}
Success #stdin #stdout 0.01s 2676KB
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https://ideone.com/Bbxd6p
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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