1// -*- C++ -*- Exception handling routines for catching.
2// Copyright (C) 2001-2017 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
26#include <typeinfo>
27#include <cxxabi.h>
28#include "unwind-cxx.h"
29
30namespace __cxxabiv1
31{
32
33// Returns the type_info for the currently handled exception [15.3/8], or
34// null if there is none.
35extern "C"
36std::type_info *__cxa_current_exception_type () _GLIBCXX_NOTHROW
37{
38 __cxa_eh_globals *globals = __cxa_get_globals ();
39 __cxa_exception *header = globals->caughtExceptions;
40 if (header)
41 {
42 if (__is_dependent_exception (header->unwindHeader.exception_class))
43 {
44 __cxa_dependent_exception *de =
45 __get_dependent_exception_from_ue (&header->unwindHeader);
46 header = __get_exception_header_from_obj (de->primaryException);
47 }
48 return header->exceptionType;
49 }
50 else
51 return 0;
52}
53
54} // namespace __cxxabiv1
55