vterminate.cc   [plain text]

// Verbose terminate_handler -*- C++ -*-

// Copyright (C) 2001 Free Software Foundation
//
// This file is part of GNU CC.
//
// GNU CC is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2, or (at your option)
// any later version.
// 
// GNU CC is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with GNU CC; see the file COPYING.  If not, write to
// the Free Software Foundation, 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.

// As a special exception, you may use this file as part of a free software
// library without restriction.  Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License.  This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.

#include <exception>
#include <cstdlib>
#include <cstdio>
#include <cxxabi.h>

using namespace std;
using namespace abi;

namespace __gnu_cxx
{

/* A replacement for the standard terminate_handler which prints
   more information about the terminating exception (if any) on stderr.  */
void __verbose_terminate_handler ()
{
  // Make sure there was an exception; terminate is also called for an
  // attempt to rethrow when there is no suitable exception.
  type_info *t = __cxa_current_exception_type ();
  if (t)
    {
      char const *name = t->name ();
      // Note that "name" is the mangled name.

      {
	int status = -1;
	char *dem = 0;

#if 0
	// Disabled until __cxa_demangle gets the runtime GPL exception.
	dem = __cxa_demangle (name, 0, 0, &status);
#endif

	printf ("terminate called after throwing a `%s'\n",
		status == 0 ? dem : name);

	if (status == 0)
	  free (dem);
      }

      // If the exception is derived from std::exception, we can give more
      // information.
      try { throw; }
      catch (exception &exc)
	{ fprintf (stderr, "  what(): %s\n", exc.what()); }
      catch (...) { }
    }
  else
    fprintf (stderr, "terminate called without an active exception\n");

  abort ();
}

} // namespace __gnu_cxx