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

   1 // Copyright (C) 2009-2024 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 // { dg-do run { target { c++11 && { ! c++23 } } } }
  19
  20 #include <typeinfo>
  21 #include <exception>
  22 #include "unwind.h"
  23 #include <testsuite_hooks.h>
  24
  25 // Before exception_ptr was introduced, some programs copied
  26 // part of unwind-cxx.h and used __cxa_get_globals to get at the
  27 // current exceptionType.  __cxa_exception structure is described in the
  28 // C++ ABI, so they have the right to assume it works.
  29 // Ensure it is true.
  30
  31 struct __cxa_exception
  32 {
  33   std::type_info *exceptionType;
  34   void (*exceptionDestructor)(void *);
  35   std::unexpected_handler unexpectedHandler;
  36   std::terminate_handler terminateHandler;
  37   __cxa_exception *nextException;
  38   int handlerCount;
  39 #ifdef __ARM_EABI_UNWINDER__
  40   __cxa_exception* nextPropagatingException;
  41   int propagationCount;
  42 #else
  43   int handlerSwitchValue;
  44   const unsigned char *actionRecord;
  45   const unsigned char *languageSpecificData;
  46   _Unwind_Ptr catchTemp;
  47   void *adjustedPtr;
  48 #endif
  49   _Unwind_Exception unwindHeader;
  50 };
  51
  52 struct __cxa_eh_globals
  53 {
  54   __cxa_exception *caughtExceptions;
  55   unsigned int uncaughtExceptions;
  56 #ifdef __ARM_EABI_UNWINDER__
  57   __cxa_exception* propagatingExceptions;
  58 #endif
  59 };
  60
  61 extern "C" __cxa_eh_globals *__cxa_get_globals () throw();
  62
  63 // PR libstdc++/38732
  64 void test01 ()
  65 {
  66   try {
  67     throw 0;
  68   } catch(...) {
  69     __cxa_exception *exc = __cxa_get_globals()->caughtExceptions;
  70     VERIFY ( exc != 0 );
  71 #if __cpp_rtti
  72     VERIFY ( typeid(int) == *exc->exceptionType );
  73 #endif
  74   }
  75   try {
  76     throw 0LL;
  77   } catch(...) {
  78     __cxa_exception *exc = __cxa_get_globals()->caughtExceptions;
  79     VERIFY ( exc != 0 );
  80 #if __cpp_rtti
  81     VERIFY ( typeid(long long int) == *exc->exceptionType );
  82 #endif
  83   }
  84   try {
  85     throw 0.0;
  86   } catch(...) {
  87     __cxa_exception *exc = __cxa_get_globals()->caughtExceptions;
  88     VERIFY ( exc != 0 );
  89 #if __cpp_rtti
  90     VERIFY ( typeid(double) == *exc->exceptionType );
  91 #endif
  92   }
  93 }
  94
  95 int main ()
  96 {
  97   test01 ();
  98 }