libstdc++-v3/libsupc++/del_op.cc

   1 // Boilerplate support routines for -*- C++ -*- dynamic memory management.
   2
   3 // Copyright (C) 1997, 1998, 1999, 2000, 2004, 2007, 2009, 2010, 2011
   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 3, 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 // Under Section 7 of GPL version 3, you are granted additional
  19 // permissions described in the GCC Runtime Library Exception, version
  20 // 3.1, as published by the Free Software Foundation.
  21
  22 // You should have received a copy of the GNU General Public License and
  23 // a copy of the GCC Runtime Library Exception along with this program;
  24 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  25 // <http://www.gnu.org/licenses/>.
  26
  27 #include <bits/c++config.h>
  28
  29 #if !_GLIBCXX_HOSTED
  30 // A freestanding C runtime may not provide "free" -- but there is no
  31 // other reasonable way to implement "operator delete".
  32 namespace std
  33 {
  34 _GLIBCXX_BEGIN_NAMESPACE_VERSION
  35   extern "C" void free(void*);
  36 _GLIBCXX_END_NAMESPACE_VERSION
  37 } // namespace
  38 #else
  39 # include <cstdlib>
  40 #endif
  41
  42 #include "new"
  43
  44 _GLIBCXX_WEAK_DEFINITION void
  45 operator delete(void* ptr) _GLIBCXX_USE_NOEXCEPT
  46 {
  47   if (ptr)
  48     std::free(ptr);
  49 }