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

   1 // -*- C++ -*-
   2 // Copyright (C) 2000, 2001 Free Software Foundation
   3 //
   4 // This file is part of GCC.
   5 //
   6 // GCC is free software; you can redistribute it and/or modify
   7 // it under the terms of the GNU General Public License as published by
   8 // the Free Software Foundation; either version 2, or (at your option)
   9 // any later version.
  10 //
  11 // GCC is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15 //
  16 // You should have received a copy of the GNU General Public License
  17 // along with GCC; see the file COPYING.  If not, write to
  18 // the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  19 // Boston, MA 02110-1301, USA.
  20 //
  21 // As a special exception, you may use this file as part of a free software
  22 // library without restriction.  Specifically, if other files instantiate
  23 // templates or use macros or inline functions from this file, or you compile
  24 // this file and link it with other files to produce an executable, this
  25 // file does not by itself cause the resulting executable to be covered by
  26 // the GNU General Public License.  This exception does not however
  27 // invalidate any other reasons why the executable file might be covered by
  28 // the GNU General Public License.
  29
  30 #include <bits/c++config.h>
  31 #include <cxxabi.h>
  32 #include "unwind-cxx.h"
  33
  34 #if _GLIBCXX_HOSTED
  35 #ifdef _GLIBCXX_HAVE_UNISTD_H
  36 # include <unistd.h>
  37 # define writestr(str)  write(2, str, sizeof(str) - 1)
  38 # ifdef __GNU_LIBRARY__
  39   /* Avoid forcing the library's meaning of `write' on the user program
  40      by using the "internal" name (for use within the library).  */
  41 /*#  define write(fd, buf, n)   __write((fd), (buf), (n))*/
  42 # endif
  43 #else
  44 # include <cstdio>
  45 # define writestr(str)  std::fputs(str, stderr)
  46 #endif
  47 #else
  48 # define writestr(str) /* Empty */
  49 #endif
  50
  51 extern "C" void
  52 __cxxabiv1::__cxa_pure_virtual (void)
  53 {
  54   writestr ("pure virtual method called\n");
  55   std::terminate ();
  56 }