1// Verbose terminate_handler -*- C++ -*-
2
3// Copyright (C) 2001-2017 Free Software Foundation, Inc.
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 <bits/exception_defines.h>
31#include <cxxabi.h>
32# include <cstdio>
33
34using namespace std;
35using namespace abi;
36
37namespace __gnu_cxx
38{
39_GLIBCXX_BEGIN_NAMESPACE_VERSION
40
41 // A replacement for the standard terminate_handler which prints
42 // more information about the terminating exception (if any) on
43 // stderr.
44 void __verbose_terminate_handler()
45 {
46 static bool terminating;
47 if (terminating)
48 {
49 fputs("terminate called recursively\n", stderr);
50 abort ();
51 }
52 terminating = true;
53
54 // Make sure there was an exception; terminate is also called for an
55 // attempt to rethrow when there is no suitable exception.
56 type_info *t = __cxa_current_exception_type();
57 if (t)
58 {
59 // Note that "name" is the mangled name.
60 char const *name = t->name();
61 {
62 int status = -1;
63 char *dem = 0;
64
65 dem = __cxa_demangle(name, 0, 0, &status);
66
67 fputs("terminate called after throwing an instance of '", stderr);
68 if (status == 0)
69 fputs(dem, stderr);
70 else
71 fputs(name, stderr);
72 fputs("'\n", stderr);
73
74 if (status == 0)
75 free(dem);
76 }
77
78 // If the exception is derived from std::exception, we can
79 // give more information.
80 __try { __throw_exception_again; }
81#if __cpp_exceptions
82 __catch(const exception& exc)
83 {
84 char const *w = exc.what();
85 fputs(" what(): ", stderr);
86 fputs(w, stderr);
87 fputs("\n", stderr);
88 }
89#endif
90 __catch(...) { }
91 }
92 else
93 fputs("terminate called without an active exception\n", stderr);
94
95 abort();
96 }
97
98_GLIBCXX_END_NAMESPACE_VERSION
99} // namespace
100
101#endif
102