1// Verbose terminate_handler -*- C++ -*-
2
3// Copyright (C) 2001, 2002, 2004, 2005 Free Software Foundation
4//
5// This file is part of the GNU ISO C++ Library.  This library is free
6// software; you can redistribute it and/or modify it under the
7// terms of the GNU General Public License as published by the
8// Free Software Foundation; either version 2, or (at your option)
9// any later version.
10
11// This library 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 along
17// with this library; see the file COPYING.  If not, write to the Free
18// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
19// 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
32#if _GLIBCXX_HOSTED
33#include <cstdlib>
34#include <exception>
35#include <exception_defines.h>
36#include <cxxabi.h>
37# include <cstdio>
38
39using namespace std;
40using namespace abi;
41
42_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
43
44  // A replacement for the standard terminate_handler which prints
45  // more information about the terminating exception (if any) on
46  // stderr.
47  void __verbose_terminate_handler()
48  {
49    static bool terminating;
50    if (terminating)
51      {
52	fputs("terminate called recursively\n", stderr);
53	abort ();
54      }
55    terminating = true;
56
57    // Make sure there was an exception; terminate is also called for an
58    // attempt to rethrow when there is no suitable exception.
59    type_info *t = __cxa_current_exception_type();
60    if (t)
61      {
62	// Note that "name" is the mangled name.
63	char const *name = t->name();
64	{
65	  int status = -1;
66	  char *dem = 0;
67
68	  dem = __cxa_demangle(name, 0, 0, &status);
69
70	  fputs("terminate called after throwing an instance of '", stderr);
71	  if (status == 0)
72	    fputs(dem, stderr);
73	  else
74	    fputs(name, stderr);
75	  fputs("'\n", stderr);
76
77	  if (status == 0)
78	    free(dem);
79	}
80
81	// If the exception is derived from std::exception, we can
82	// give more information.
83	try { __throw_exception_again; }
84#ifdef __EXCEPTIONS
85	catch (exception &exc)
86	  {
87	    char const *w = exc.what();
88	    fputs("  what():  ", stderr);
89	    fputs(w, stderr);
90	    fputs("\n", stderr);
91          }
92#endif
93	catch (...) { }
94      }
95    else
96      fputs("terminate called without an active exception\n", stderr);
97
98    abort();
99  }
100
101_GLIBCXX_END_NAMESPACE
102
103#endif
104