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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.  
  47.     static bool terminating;
  48.     if (terminating)
  49.       {
  50.         fputs("terminate called recursively\n", stderr);
  51.         abort ();
  52.       }
  53.     terminating = true;
  54.  
  55.     // Make sure there was an exception; terminate is also called for an
  56.     // attempt to rethrow when there is no suitable exception.
  57.     type_info *t = __cxa_current_exception_type();
  58.     if (t)
  59.       {
  60.         // Note that "name" is the mangled name.
  61.         char const *name = t->name();
  62.         {
  63.           int status = -1;
  64.           char *dem = 0;
  65.  
  66.           dem = __cxa_demangle(name, 0, 0, &status);
  67.  
  68.           fputs("terminate called after throwing an instance of '", stderr);
  69.           if (status == 0)
  70.             fputs(dem, stderr);
  71.           else
  72.             fputs(name, stderr);
  73.           fputs("'\n", stderr);
  74.  
  75.           if (status == 0)
  76.             free(dem);
  77.         }
  78.  
  79.         // If the exception is derived from std::exception, we can
  80.         // give more information.
  81.         __try { __throw_exception_again; }
  82. #ifdef __EXCEPTIONS
  83.         __catch(const exception& exc)
  84.           {
  85.             char const *w = exc.what();
  86.             fputs("  what():  ", stderr);
  87.             fputs(w, stderr);
  88.             fputs("\n", stderr);
  89.           }
  90. #endif
  91.         __catch(...) { }
  92.       }
  93.     else
  94.       fputs("terminate called without an active exception\n", stderr);
  95.  
  96.     abort();
  97.   }
  98.  
  99. _GLIBCXX_END_NAMESPACE_VERSION
  100. } // namespace
  101.  
  102. #endif
  103.