contrib/libcxxrt/auxhelper.cc

   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 /**
  28  * aux.cc - Compiler helper functions.
  29  *
  30  * The functions declared in this file are intended to be called only by code
  31  * that is automatically generated by C++ compilers for some common cases.
  32  */
  33
  34 #include <stdlib.h>
  35 #include "stdexcept.h"
  36
  37 /**
  38  * Called to generate a bad cast exception.  This function is intended to allow
  39  * compilers to insert code generating this exception without needing to
  40  * duplicate the code for throwing the exception in every call site.
  41  */
  42 extern "C" void __cxa_bad_cast()
  43 {
  44     throw std::bad_cast();
  45 }
  46
  47 /**
  48  * Called to generate a bad typeid exception.  This function is intended to
  49  * allow compilers to insert code generating this exception without needing to
  50  * duplicate the code for throwing the exception in every call site.
  51  */
  52 extern "C" void __cxa_bad_typeid()
  53 {
  54     throw std::bad_typeid();
  55 }
  56
  57 /**
  58  * Compilers may (but are not required to) set any pure-virtual function's
  59  * vtable entry to this function.  This makes debugging slightly easier, as
  60  * users can add a breakpoint on this function to tell if they've accidentally
  61  * called a pure-virtual function.
  62  */
  63 extern "C" void __cxa_pure_virtual()
  64 {
  65     abort();
  66 }
  67
  68 /**
  69  * Compilers may (but are not required to) set any deleted-virtual function's
  70  * vtable entry to this function.  This makes debugging slightly easier, as
  71  * users can add a breakpoint on this function to tell if they've accidentally
  72  * called a deleted-virtual function.
  73  */
  74 extern "C" void __cxa_deleted_virtual()
  75 {
  76     abort();
  77 }
  78
  79 extern "C" void __cxa_throw_bad_array_new_length()
  80 {
  81         throw std::bad_array_new_length();
  82 }