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

   1 // Boilerplate support routines for -*- C++ -*- dynamic memory management.
   2
   3 // Copyright (C) 1997, 1998, 1999, 2000, 2004 Free Software Foundation
   4 //
   5 // This file is part of GCC.
   6 //
   7 // GCC is free software; you can redistribute it and/or modify
   8 // it under the terms of the GNU General Public License as published by
   9 // the Free Software Foundation; either version 2, or (at your option)
  10 // any later version.
  11 //
  12 // GCC is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16 //
  17 // You should have received a copy of the GNU General Public License
  18 // along with GCC; see the file COPYING.  If not, write to
  19 // the Free Software Foundation, 59 Temple Place - Suite 330,
  20 // Boston, MA 02111-1307, USA.
  21 //
  22 // As a special exception, you may use this file as part of a free software
  23 // library without restriction.  Specifically, if other files instantiate
  24 // templates or use macros or inline functions from this file, or you compile
  25 // this file and link it with other files to produce an executable, this
  26 // file does not by itself cause the resulting executable to be covered by
  27 // the GNU General Public License.  This exception does not however
  28 // invalidate any other reasons why the executable file might be covered by
  29 // the GNU General Public License.
  30
  31 #include "new"
  32 #include <cstdlib>
  33 #include <bits/c++config.h>
  34
  35 #if _GLIBCXX_HOSTED
  36 using std::free;
  37 #else
  38 // A freestanding C runtime may not provide "free" -- but there is no
  39 // other reasonable way to implement "operator delete".
  40 extern "C" void free(void *);
  41 #endif
  42
  43 _GLIBCXX_WEAK_DEFINITION void
  44 operator delete (void *ptr) throw ()
  45 {
  46   if (ptr)
  47     free (ptr);
  48 }