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<a href="a01166.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Exception Handling support header for -*- C++ -*-</span></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> <span class="comment">// Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// Free Software Foundation</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">//</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// This file is part of GCC.</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">//</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// GCC is free software; you can redistribute it and/or modify</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// it under the terms of the GNU General Public License as published by</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// the Free Software Foundation; either version 3, or (at your option)</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// any later version.</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">//</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// GCC is distributed in the hope that it will be useful,</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">// GNU General Public License for more details.</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">//</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">// Under Section 7 of GPL version 3, you are granted additional</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">// permissions described in the GCC Runtime Library Exception, version</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">// 3.1, as published by the Free Software Foundation.</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// You should have received a copy of the GNU General Public License and</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment">// a copy of the GCC Runtime Library Exception along with this program;</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment">// <http://www.gnu.org/licenses/>.</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"></span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment">/** @file exception</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> * This is a Standard C++ Library header.</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#ifndef __EXCEPTION__</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor"></span><span class="preprocessor">#define __EXCEPTION__</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#pragma GCC system_header</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#pragma GCC visibility push(default)</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor">#include <<a class="code" href="a01015.html">bits/c++config.h</a>></span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor">#include <<a class="code" href="a00986.html">bits/atomic_lockfree_defines.h</a>></span></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> <span class="keyword">extern</span> <span class="stringliteral">"C++"</span> {</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> <span class="keyword">namespace </span>std</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> {<span class="comment"></span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> /**</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> * @defgroup exceptions Exceptions</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"> * @ingroup diagnostics</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"> * Classes and functions for reporting errors via exception classes.</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment"> * @{</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment"></span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"> /**</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment"> * @brief Base class for all library exceptions.</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment"> * This is the base class for all exceptions thrown by the standard</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment"> * library, and by certain language expressions. You are free to derive</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment"> * your own %exception classes, or use a different hierarchy, or to</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment"> * throw non-class data (e.g., fundamental types).</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"><a class="code" href="a00657.html"> 62</a></span>  <span class="keyword">class </span><a class="code" href="a00657.html" title="Base class for all library exceptions.">exception</a></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  {</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <a class="code" href="a00657.html" title="Base class for all library exceptions.">exception</a>() _GLIBCXX_USE_NOEXCEPT { }</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keyword">virtual</span> ~<a class="code" href="a00657.html" title="Base class for all library exceptions.">exception</a>() _GLIBCXX_USE_NOEXCEPT;</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment"></span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"> /** Returns a C-style character string describing the general cause</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment"> * of the current error. */</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keyword">virtual</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="a00657.html#a27d45706e1848c30dd4b3defc688e5cb">what</a>() <span class="keyword">const</span> _GLIBCXX_USE_NOEXCEPT;</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  };</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment"></span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment"> /** If an %exception is thrown which is not listed in a function's</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment"> * %exception specification, one of these may be thrown. */</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"><a class="code" href="a00579.html"> 75</a></span>  <span class="keyword">class </span><a class="code" href="a00579.html">bad_exception</a> : <span class="keyword">public</span> <a class="code" href="a00657.html" title="Base class for all library exceptions.">exception</a></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  {</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <a class="code" href="a00579.html">bad_exception</a>() _GLIBCXX_USE_NOEXCEPT { }</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="comment">// This declaration is not useless:</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="comment">// http://gcc.gnu.org/onlinedocs/gcc-3.0.2/gcc_6.html#SEC118</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keyword">virtual</span> ~<a class="code" href="a00579.html">bad_exception</a>() _GLIBCXX_USE_NOEXCEPT;</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="comment">// See comment in eh_exception.cc.</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keyword">virtual</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="a00579.html#a60d49323883dc12820f71a777fe4bce7">what</a>() <span class="keyword">const</span> _GLIBCXX_USE_NOEXCEPT;</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  };</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="comment"></span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment"> /// If you write a replacement %terminate handler, it must be of this type.</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"><a class="code" href="a01630.html#gac6afb78180be4f4f841ae9d32f538f00"> 89</a></span> <span class="comment"></span> <span class="keyword">typedef</span> void (*<a class="code" href="a01630.html#gac6afb78180be4f4f841ae9d32f538f00" title="If you write a replacement terminate handler, it must be of this type.">terminate_handler</a>) ();</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment"></span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment"> /// If you write a replacement %unexpected handler, it must be of this type.</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"><a class="code" href="a01630.html#gaeeec922393be8c20662a12875c1d09f0"> 92</a></span> <span class="comment"></span> <span class="keyword">typedef</span> void (*<a class="code" href="a01630.html#gaeeec922393be8c20662a12875c1d09f0" title="If you write a replacement unexpected handler, it must be of this type.">unexpected_handler</a>) ();</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment"></span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment"> /// Takes a new handler function as an argument, returns the old function.</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment"></span> <a class="code" href="a01630.html#gac6afb78180be4f4f841ae9d32f538f00" title="If you write a replacement terminate handler, it must be of this type.">terminate_handler</a> <a class="code" href="a01630.html#gad878869876802a045479b446bfe2f1f2" title="Takes a new handler function as an argument, returns the old function.">set_terminate</a>(<a class="code" href="a01630.html#gac6afb78180be4f4f841ae9d32f538f00" title="If you write a replacement terminate handler, it must be of this type.">terminate_handler</a>) _GLIBCXX_USE_NOEXCEPT;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment"></span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment"> /** The runtime will call this function if %exception handling must be</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment"> * abandoned for any reason. It can also be called by the user. */</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordtype">void</span> <a class="code" href="a01630.html#ga39553839b12d33d09a4e450a393789ce">terminate</a>() _GLIBCXX_USE_NOEXCEPT __attribute__ ((__noreturn__));</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="comment"></span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="comment"> /// Takes a new handler function as an argument, returns the old function.</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="comment"></span> <a class="code" href="a01630.html#gaeeec922393be8c20662a12875c1d09f0" title="If you write a replacement unexpected handler, it must be of this type.">unexpected_handler</a> <a class="code" href="a01630.html#gaf79e744b0aa5a665e96331a57bb3a867" title="Takes a new handler function as an argument, returns the old function.">set_unexpected</a>(<a class="code" href="a01630.html#gaeeec922393be8c20662a12875c1d09f0" title="If you write a replacement unexpected handler, it must be of this type.">unexpected_handler</a>) _GLIBCXX_USE_NOEXCEPT;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="comment"></span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="comment"> /** The runtime will call this function if an %exception is thrown which</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="comment"> * violates the function's %exception specification. */</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordtype">void</span> <a class="code" href="a01630.html#ga742bf00b19772819acc97ae5e8f4bebe">unexpected</a>() __attribute__ ((__noreturn__));</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="comment"></span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="comment"> /** [18.6.4]/1: 'Returns true after completing evaluation of a</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="comment"> * throw-expression until either completing initialization of the</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="comment"> * exception-declaration in the matching handler or entering @c unexpected()</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="comment"> * due to the throw; or after entering @c terminate() for any reason</span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="comment"> * other than an explicit call to @c terminate(). [Note: This includes</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="comment"> * stack unwinding [15.2]. end note]'</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="comment"> * 2: 'When @c uncaught_exception() is true, throwing an</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="comment"> * %exception can result in a call of @c terminate()</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="comment"> * (15.5.1).'</span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keywordtype">bool</span> <a class="code" href="a01630.html#ga6e2ca8f06b3d2fd0ba35addd2ec6a860">uncaught_exception</a>() _GLIBCXX_USE_NOEXCEPT __attribute__ ((__pure__));</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> </div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="comment">// @} group exceptions</span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> } <span class="comment">// namespace std</span></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> namespace __gnu_cxx</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> {</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> _GLIBCXX_BEGIN_NAMESPACE_VERSION</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="comment"></span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="comment"> /**</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="comment"> * @brief A replacement for the standard terminate_handler which</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="comment"> * prints more information about the terminating exception (if any)</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="comment"> * on stderr.</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="comment"> * @ingroup exceptions</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="comment"> * Call</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="comment"> * @code</span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="comment"> * std::set_terminate(__gnu_cxx::__verbose_terminate_handler)</span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="comment"> * @endcode</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="comment"> * to use. For more info, see</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="comment"> * http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt02ch06s02.html</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="comment"> * In 3.4 and later, this is on by default.</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordtype">void</span> <a class="code" href="a01630.html#gaf51888cedbc669a114cd79e39e0cd9be" title="A replacement for the standard terminate_handler which prints more information about the terminating ...">__verbose_terminate_handler</a>();</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> </div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> _GLIBCXX_END_NAMESPACE_VERSION</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> } <span class="comment">// namespace</span></div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> </div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> } <span class="comment">// extern "C++"</span></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> </div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="preprocessor">#pragma GCC visibility pop</span></div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="preprocessor">#if defined(__GXX_EXPERIMENTAL_CXX0X__) && (ATOMIC_INT_LOCK_FREE > 1)</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="preprocessor"></span><span class="preprocessor">#include <<a class="code" href="a01169.html">bits/exception_ptr.h</a>></span></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="preprocessor">#include <<a class="code" href="a01322.html">bits/nested_exception.h</a>></span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> <span class="preprocessor">#endif</span></div>
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