1// Verbose terminate_handler -*- C++ -*-
2
3// Copyright (C) 2001, 2002, 2004, 2005, 2009 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 3, 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// 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
27#if _GLIBCXX_HOSTED
28#include <cstdlib>
29#include <exception>
30#include <exception_defines.h>
31#include <cxxabi.h>
32# include <cstdio>
33
34using namespace std;
35using namespace abi;
36
37_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
38
39  // A replacement for the standard terminate_handler which prints
40  // more information about the terminating exception (if any) on
41  // stderr.
42  void __verbose_terminate_handler()
43  {
44    static bool terminating;
45    if (terminating)
46      {
47	fputs("terminate called recursively\n", stderr);
48	abort ();
49      }
50    terminating = true;
51
52    // Make sure there was an exception; terminate is also called for an
53    // attempt to rethrow when there is no suitable exception.
54    type_info *t = __cxa_current_exception_type();
55    if (t)
56      {
57	// Note that "name" is the mangled name.
58	char const *name = t->name();
59	{
60	  int status = -1;
61	  char *dem = 0;
62
63	  dem = __cxa_demangle(name, 0, 0, &status);
64
65	  fputs("terminate called after throwing an instance of '", stderr);
66	  if (status == 0)
67	    fputs(dem, stderr);
68	  else
69	    fputs(name, stderr);
70	  fputs("'\n", stderr);
71
72	  if (status == 0)
73	    free(dem);
74	}
75
76	// If the exception is derived from std::exception, we can
77	// give more information.
78	__try { __throw_exception_again; }
79#ifdef __EXCEPTIONS
80	__catch(const exception& exc)
81	  {
82	    char const *w = exc.what();
83	    fputs("  what():  ", stderr);
84	    fputs(w, stderr);
85	    fputs("\n", stderr);
86          }
87#endif
88	__catch(...) { }
89      }
90    else
91      fputs("terminate called without an active exception\n", stderr);
92
93    abort();
94  }
95
96_GLIBCXX_END_NAMESPACE
97
98#endif
99