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  1. // Verbose terminate_handler -*- C++ -*-
  2.  
  3. // Copyright (C) 2001-2013 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.  
  34. using namespace std;
  35. using namespace abi;
  36.  
  37. namespace __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. #ifdef __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.