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

   1 // -*- C++ -*-
   2 // Copyright (C) 2000-2023 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
   7 // it under the terms of the GNU General Public License as published by
   8 // the Free Software Foundation; either version 3, 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 // Under Section 7 of GPL version 3, you are granted additional
  17 // permissions described in the GCC Runtime Library Exception, version
  18 // 3.1, as published by the Free Software Foundation.
  19
  20 // You should have received a copy of the GNU General Public License and
  21 // a copy of the GCC Runtime Library Exception along with this program;
  22 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23 // <http://www.gnu.org/licenses/>.
  24
  25 #include <bits/c++config.h>
  26 #include <cxxabi.h>
  27 #include "unwind-cxx.h"
  28
  29 #if _GLIBCXX_HOSTED && _GLIBCXX_VERBOSE
  30 #ifdef _GLIBCXX_HAVE_UNISTD_H
  31 # include <unistd.h>
  32 # define writestr(str)  write(2, str, sizeof(str) - 1)
  33 # ifdef __GNU_LIBRARY__
  34   /* Avoid forcing the library's meaning of `write' on the user program
  35      by using the "internal" name (for use within the library).  */
  36 /*#  define write(fd, buf, n)   __write((fd), (buf), (n))*/
  37 # endif
  38 #else
  39 # include <cstdio>
  40 # define writestr(str)  std::fputs(str, stderr)
  41 #endif
  42 #else
  43 # define writestr(str) /* Empty */
  44 #endif
  45
  46 extern "C" void
  47 __cxxabiv1::__cxa_pure_virtual (void)
  48 {
  49   writestr ("pure virtual method called\n");
  50   std::terminate ();
  51 }
  52
  53 extern "C" void
  54 __cxxabiv1::__cxa_deleted_virtual (void)
  55 {
  56   writestr ("deleted virtual method called\n");
  57   std::terminate ();
  58 }