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1 // -*- C++ -*- Exception handling routines for catching.
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2 // Copyright (C) 2001-2017 Free Software Foundation, Inc.
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3 //
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4 // This file is part of GCC.
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5 //
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6 // GCC is free software; you can redistribute it and/or modify
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7 // it under the terms of the GNU General Public License as published by
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8 // the Free Software Foundation; either version 3, or (at your option)
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9 // any later version.
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10 //
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11 // GCC is distributed in the hope that it will be useful,
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12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 // GNU General Public License for more details.
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15 //
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16 // Under Section 7 of GPL version 3, you are granted additional
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17 // permissions described in the GCC Runtime Library Exception, version
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18 // 3.1, as published by the Free Software Foundation.
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19
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20 // You should have received a copy of the GNU General Public License and
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21 // a copy of the GCC Runtime Library Exception along with this program;
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22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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23 // <http://www.gnu.org/licenses/>.
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24
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25
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26 #include <typeinfo>
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27 #include <cxxabi.h>
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28 #include "unwind-cxx.h"
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29
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30 namespace __cxxabiv1
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31 {
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32
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33 // Returns the type_info for the currently handled exception [15.3/8], or
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34 // null if there is none.
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35 extern "C"
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36 std::type_info *__cxa_current_exception_type () _GLIBCXX_NOTHROW
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37 {
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38 __cxa_eh_globals *globals = __cxa_get_globals ();
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39 __cxa_exception *header = globals->caughtExceptions;
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40 if (header)
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41 {
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42 if (__is_dependent_exception (header->unwindHeader.exception_class))
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43 {
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44 __cxa_dependent_exception *de =
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45 __get_dependent_exception_from_ue (&header->unwindHeader);
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46 header = __get_exception_header_from_obj (de->primaryException);
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47 }
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48 return header->exceptionType;
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49 }
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50 else
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51 return 0;
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52 }
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53
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54 } // namespace __cxxabiv1
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