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<a href="a00026.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> // Exception Handling support header for -*- C++ -*-</div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> </div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> // Copyright (C) 1995-2018 Free Software Foundation, Inc.</div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> //</div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> // This file is part of GCC.</div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> //</div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> // GCC is free software; you can redistribute it and/or modify</div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> // it under the terms of the GNU General Public License as published by</div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> // the Free Software Foundation; either version 3, or (at your option)</div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> // any later version.</div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> //</div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> // GCC is distributed in the hope that it will be useful,</div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> // but WITHOUT ANY WARRANTY; without even the implied warranty of</div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> // GNU General Public License for more details.</div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> //</div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> // Under Section 7 of GPL version 3, you are granted additional</div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> // permissions described in the GCC Runtime Library Exception, version</div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> // 3.1, as published by the Free Software Foundation.</div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> // You should have received a copy of the GNU General Public License and</div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> // a copy of the GCC Runtime Library Exception along with this program;</div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see</div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> // <http://www.gnu.org/licenses/>.</div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> /** @file exception</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  * This is a Standard C++ Library header.</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  */</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> #ifndef __EXCEPTION__</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> #define __EXCEPTION__</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> #pragma GCC system_header</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> #pragma GCC visibility push(default)</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> #include <bits/c++config.h></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> #include <bits/exception.h></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> extern "C++" {</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> namespace std</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> {</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  /** If an %exception is thrown which is not listed in a function's</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  * %exception specification, one of these may be thrown. */</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  class bad_exception : public exception</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  {</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  public:</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  bad_exception() _GLIBCXX_USE_NOEXCEPT { }</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span> </div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  // This declaration is not useless:</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  // http://gcc.gnu.org/onlinedocs/gcc-3.0.2/gcc_6.html#SEC118</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  virtual ~bad_exception() _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_USE_NOEXCEPT;</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span> </div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  // See comment in eh_exception.cc.</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  virtual const char*</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  what() const _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_USE_NOEXCEPT;</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  };</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> </div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  /// If you write a replacement %terminate handler, it must be of this type.</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  typedef void (*terminate_handler) ();</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  /// If you write a replacement %unexpected handler, it must be of this type.</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  typedef void (*unexpected_handler) ();</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  /// Takes a new handler function as an argument, returns the old function.</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  terminate_handler set_terminate(terminate_handler) _GLIBCXX_USE_NOEXCEPT;</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> #if __cplusplus >= 201103L</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  /// Return the current terminate handler.</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  terminate_handler get_terminate() noexcept;</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span> #endif</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span> </div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  /** The runtime will call this function if %exception handling must be</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  * abandoned for any reason. It can also be called by the user. */</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  void terminate() _GLIBCXX_USE_NOEXCEPT __attribute__ ((__noreturn__));</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  /// Takes a new handler function as an argument, returns the old function.</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  unexpected_handler set_unexpected(unexpected_handler) _GLIBCXX_USE_NOEXCEPT;</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span> #if __cplusplus >= 201103L</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  /// Return the current unexpected handler.</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  unexpected_handler get_unexpected() noexcept;</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span> #endif</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  /** The runtime will call this function if an %exception is thrown which</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  * violates the function's %exception specification. */</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  void unexpected() __attribute__ ((__noreturn__));</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  /** [18.6.4]/1: 'Returns true after completing evaluation of a</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  * throw-expression until either completing initialization of the</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  * exception-declaration in the matching handler or entering @c unexpected()</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  * due to the throw; or after entering @c terminate() for any reason</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  * other than an explicit call to @c terminate(). [Note: This includes</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  * stack unwinding [15.2]. end note]'</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  *</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  * 2: 'When @c uncaught_exception() is true, throwing an</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  * %exception can result in a call of @c terminate()</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  * (15.5.1).'</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  */</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  _GLIBCXX17_DEPRECATED</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  bool uncaught_exception() _GLIBCXX_USE_NOEXCEPT __attribute__ ((__pure__));</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span> #if __cplusplus >= 201703L || !defined(__STRICT_ANSI__) // c++17 or gnu++98</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> #define __cpp_lib_uncaught_exceptions 201411L</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  /// The number of uncaught exceptions.</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  int uncaught_exceptions() _GLIBCXX_USE_NOEXCEPT __attribute__ ((__pure__));</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span> #endif</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span> </div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  // @} group exceptions</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span> } // namespace std</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span> namespace __gnu_cxx</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span> {</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span> _GLIBCXX_BEGIN_NAMESPACE_VERSION</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  /**</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  * @brief A replacement for the standard terminate_handler which</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  * prints more information about the terminating exception (if any)</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  * on stderr.</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  *</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  * @ingroup exceptions</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  *</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  * Call</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  * @code</div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  * std::set_terminate(__gnu_cxx::__verbose_terminate_handler)</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  * @endcode</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  * to use. For more info, see</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  * http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt02ch06s02.html</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  *</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  * In 3.4 and later, this is on by default.</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  */</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  void __verbose_terminate_handler();</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span> </div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span> _GLIBCXX_END_NAMESPACE_VERSION</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span> } // namespace</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span> </div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span> } // extern "C++"</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span> </div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span> #pragma GCC visibility pop</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span> </div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span> #if (__cplusplus >= 201103L)</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span> #include <bits/exception_ptr.h></div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span> #include <bits/nested_exception.h></div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span> #endif</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span> </div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span> #endif</div></div><!-- fragment --></div><!-- contents -->
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