libstdc++-v3/testsuite/18_support/exception/38732.cc

   1 // Copyright (C) 2009-2020 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 #include <typeinfo>
  19 #include <exception>
  20 #include "unwind.h"
  21 #include <testsuite_hooks.h>
  22
  23 // Before exception_ptr was introduced, some programs copied
  24 // part of unwind-cxx.h and used __cxa_get_globals to get at the
  25 // current exceptionType.  __cxa_exception structure is described in the
  26 // C++ ABI, so they have the right to assume it works.
  27 // Ensure it is true.
  28
  29 struct __cxa_exception
  30 {
  31   std::type_info *exceptionType;
  32   void (*exceptionDestructor)(void *);
  33   std::unexpected_handler unexpectedHandler;
  34   std::terminate_handler terminateHandler;
  35   __cxa_exception *nextException;
  36   int handlerCount;
  37 #ifdef __ARM_EABI_UNWINDER__
  38   __cxa_exception* nextPropagatingException;
  39   int propagationCount;
  40 #else
  41   int handlerSwitchValue;
  42   const unsigned char *actionRecord;
  43   const unsigned char *languageSpecificData;
  44   _Unwind_Ptr catchTemp;
  45   void *adjustedPtr;
  46 #endif
  47   _Unwind_Exception unwindHeader;
  48 };
  49
  50 struct __cxa_eh_globals
  51 {
  52   __cxa_exception *caughtExceptions;
  53   unsigned int uncaughtExceptions;
  54 #ifdef __ARM_EABI_UNWINDER__
  55   __cxa_exception* propagatingExceptions;
  56 #endif
  57 };
  58
  59 extern "C" __cxa_eh_globals *__cxa_get_globals () throw();
  60
  61 // PR libstdc++/38732
  62 void test01 ()
  63 {
  64   try {
  65     throw 0;
  66   } catch(...) {
  67     __cxa_exception *exc = __cxa_get_globals()->caughtExceptions;
  68     VERIFY ( exc != 0 );
  69     VERIFY ( typeid(int) == *exc->exceptionType );
  70   }
  71   try {
  72     throw 0LL;
  73   } catch(...) {
  74     __cxa_exception *exc = __cxa_get_globals()->caughtExceptions;
  75     VERIFY ( exc != 0 );
  76     VERIFY ( typeid(long long int) == *exc->exceptionType );
  77   }
  78   try {
  79     throw 0.0;
  80   } catch(...) {
  81     __cxa_exception *exc = __cxa_get_globals()->caughtExceptions;
  82     VERIFY ( exc != 0 );
  83     VERIFY ( typeid(double) == *exc->exceptionType );
  84   }
  85 }
  86
  87 int main ()
  88 {
  89   test01 ();
  90 }