auxhelper.cc 2.5 KB

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  1. /*
  2. * Copyright 2010-2011 PathScale, Inc. All rights reserved.
  3. *
  4. * Redistribution and use in source and binary forms, with or without
  5. * modification, are permitted provided that the following conditions are met:
  6. *
  7. * 1. Redistributions of source code must retain the above copyright notice,
  8. * this list of conditions and the following disclaimer.
  9. *
  10. * 2. Redistributions in binary form must reproduce the above copyright notice,
  11. * this list of conditions and the following disclaimer in the documentation
  12. * and/or other materials provided with the distribution.
  13. *
  14. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
  15. * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  16. * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  17. * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
  18. * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  19. * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  20. * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  21. * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  22. * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  23. * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  24. * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25. */
  26. /**
  27. * aux.cc - Compiler helper functions.
  28. *
  29. * The functions declared in this file are intended to be called only by code
  30. * that is automatically generated by C++ compilers for some common cases.
  31. */
  32. #include <stdlib.h>
  33. #include <typeinfo>
  34. /**
  35. * Called to generate a bad cast exception. This function is intended to allow
  36. * compilers to insert code generating this exception without needing to
  37. * duplicate the code for throwing the exception in every call site.
  38. */
  39. extern "C" void __cxa_bad_cast()
  40. {
  41. throw std::bad_cast();
  42. }
  43. /**
  44. * Called to generate a bad typeid exception. This function is intended to
  45. * allow compilers to insert code generating this exception without needing to
  46. * duplicate the code for throwing the exception in every call site.
  47. */
  48. extern "C" void __cxa_bad_typeid()
  49. {
  50. throw std::bad_typeid();
  51. }
  52. /**
  53. * Compilers may (but are not required to) set any pure-virtual function's
  54. * vtable entry to this function. This makes debugging slightly easier, as
  55. * users can add a breakpoint on this function to tell if they've accidentally
  56. * called a pure-virtual function.
  57. */
  58. extern "C" void __cxa_pure_virtual()
  59. {
  60. abort();
  61. }