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<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="utility/optional/in_place.html" title="cpp/utility/in place"><span class="t-lines"><span>in_place</span><span>in_place_type</span><span>in_place_index</span><span>in_place_t</span><span>in_place_type_t</span><span>in_place_index_t</span></span></a></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Pairs and tuples</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="utility/pair.html" title="cpp/utility/pair"><span class="t-lines"><span>pair</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="utility/tuple.html" title="cpp/utility/tuple"><span class="t-lines"><span>tuple</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="utility/apply.html" title="cpp/utility/apply"><span class="t-lines"><span>apply</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx17">(C++17)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="utility/make_from_tuple.html" title="cpp/utility/make from tuple"><span class="t-lines"><span>make_from_tuple</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx17">(C++17)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="utility/piecewise_construct_t.html" title="cpp/utility/piecewise construct t"><span class="t-lines"><span>piecewise_construct_t</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="utility/piecewise_construct.html" title="cpp/utility/piecewise construct"><span class="t-lines"><span>piecewise_construct</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="utility/integer_sequence.html" title="cpp/utility/integer sequence"><span class="t-lines"><span>integer_sequence</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx14">(C++14)</span></span></span></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Swap, forward and move</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="algorithm/swap.html" title="cpp/algorithm/swap"><span class="t-lines"><span>swap</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="utility/exchange.html" title="cpp/utility/exchange"><span class="t-lines"><span>exchange</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx14">(C++14)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="utility/forward.html" title="cpp/utility/forward"><span class="t-lines"><span>forward</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="utility/move.html" title="cpp/utility/move"><span class="t-lines"><span>move</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="utility/move_if_noexcept.html" title="cpp/utility/move if noexcept"><span class="t-lines"><span>move_if_noexcept</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Elementary string conversions</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="utility/to_chars.html" title="cpp/utility/to chars"><span class="t-lines"><span>to_chars</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx17">(C++17)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="utility/from_chars.html" title="cpp/utility/from chars"><span class="t-lines"><span>from_chars</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx17">(C++17)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="utility/chars_format.html" title="cpp/utility/chars format"><span class="t-lines"><span>chars_format</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx17">(C++17)</span></span></span></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Type operations</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="utility/declval.html" title="cpp/utility/declval"><span class="t-lines"><span>declval</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="utility/as_const.html" title="cpp/utility/as const"><span class="t-lines"><span>as_const</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx17">(C++17)</span></span></span></div></div></td></tr>
</table></div><div><span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/navbar_content&action=edit">[edit]</a></span></div></div></div></div><div class="t-navbar-sep"> </div><div class="t-navbar-head"><strong class="selflink"> Error handling</strong><div class="t-navbar-menu"><div><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv-col-table"><td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv-h2"><td colspan="5"> Exception handling</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/exception.html" title="cpp/error/exception"><span class="t-lines"><span>exception</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/uncaught_exception.html" title="cpp/error/uncaught exception"><span class="t-lines"><span>uncaught_exception</span><span>uncaught_exceptions</span></span></a></div><div><span class="t-lines"><span></span><span><span class="t-mark-rev t-since-cxx17">(C++17)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/exception_ptr.html" title="cpp/error/exception ptr"><span class="t-lines"><span>exception_ptr</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/make_exception_ptr.html" title="cpp/error/make exception ptr"><span class="t-lines"><span>make_exception_ptr</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/current_exception.html" title="cpp/error/current exception"><span class="t-lines"><span>current_exception</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/rethrow_exception.html" title="cpp/error/rethrow exception"><span class="t-lines"><span>rethrow_exception</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/nested_exception.html" title="cpp/error/nested exception"><span class="t-lines"><span>nested_exception</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/throw_with_nested.html" title="cpp/error/throw with nested"><span class="t-lines"><span>throw_with_nested</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/rethrow_if_nested.html" title="cpp/error/rethrow if nested"><span class="t-lines"><span>rethrow_if_nested</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Exception handling failures</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/terminate.html" title="cpp/error/terminate"><span class="t-lines"><span>terminate</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/terminate_handler.html" title="cpp/error/terminate handler"><span class="t-lines"><span>terminate_handler</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/get_terminate.html" title="cpp/error/get terminate"><span class="t-lines"><span>get_terminate</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/set_terminate.html" title="cpp/error/set terminate"><span class="t-lines"><span>set_terminate</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/bad_exception.html" title="cpp/error/bad exception"><span class="t-lines"><span>bad_exception</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/unexpected.html" title="cpp/error/unexpected"><span class="t-lines"><span>unexpected</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/unexpected_handler.html" title="cpp/error/unexpected handler"><span class="t-lines"><span>unexpected_handler</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/get_unexpected.html" title="cpp/error/get unexpected"><span class="t-lines"><span>get_unexpected</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/set_unexpected.html" title="cpp/error/set unexpected"><span class="t-lines"><span>set_unexpected</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span></span></div></div></td></tr>
</table></div></td><td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv-h2"><td colspan="5"> Exception categories</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/logic_error/logic_error.html" title="cpp/error/logic error"><span class="t-lines"><span>logic_error</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/invalid_argument/invalid_argument.html" title="cpp/error/invalid argument"><span class="t-lines"><span>invalid_argument</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/domain_error/domain_error.html" title="cpp/error/domain error"><span class="t-lines"><span>domain_error</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/length_error/length_error.html" title="cpp/error/length error"><span class="t-lines"><span>length_error</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/out_of_range/out_of_range.html" title="cpp/error/out of range"><span class="t-lines"><span>out_of_range</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/runtime_error/runtime_error.html" title="cpp/error/runtime error"><span class="t-lines"><span>runtime_error</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/range_error/range_error.html" title="cpp/error/range error"><span class="t-lines"><span>range_error</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/overflow_error/overflow_error.html" title="cpp/error/overflow error"><span class="t-lines"><span>overflow_error</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/underflow_error/underflow_error.html" title="cpp/error/underflow error"><span class="t-lines"><span>underflow_error</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/tx_exception.html" title="cpp/error/tx exception"><span class="t-lines"><span>tx_exception</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-tm-ts t-mark-ts">(TM TS)</span></span></span></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Error codes</td></tr>
<tr class="t-nv"><td colspan="5"> <a href="error/errno_macros.html" title="cpp/error/errno macros"> Error codes</a> </td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/errno.html" title="cpp/error/errno"><span class="t-lines"><span>errno</span></span></a></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Assertions</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/assert.html" title="cpp/error/assert"><span class="t-lines"><span>assert</span></span></a></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> system_error facility</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/error_category.html" title="cpp/error/error category"><span class="t-lines"><span>error_category</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/generic_category.html" title="cpp/error/generic category"><span class="t-lines"><span>generic_category</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/system_category.html" title="cpp/error/system category"><span class="t-lines"><span>system_category</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/error_condition.html" title="cpp/error/error condition"><span class="t-lines"><span>error_condition</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/errc.html" title="cpp/error/errc"><span class="t-lines"><span>errc</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/error_code.html" title="cpp/error/error code"><span class="t-lines"><span>error_code</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="error/system_error.html" title="cpp/error/system error"><span class="t-lines"><span>system_error</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
</table></div></td></tr>
</table></div><div><span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/navbar_content&action=edit">[edit]</a></span></div></div></div></div><div class="t-navbar-sep"> </div></div>
<table id="toc" class="toc"><tr><td><div id="toctitle"><h2>Contents</h2></div>
<ul>
<li class="toclevel-1 tocsection-1"><a href="error.html#Exception_handling"><span class="tocnumber">1</span> <span class="toctext">Exception handling</span></a>
<ul>
<li class="toclevel-2"><a href="error.html#Capture_and_storage_of_exception_objects"><span class="tocnumber">1.1</span> <span class="toctext">Capture and storage of exception objects</span></a></li>
<li class="toclevel-2"><a href="error.html#Handling_of_failures_in_exception_handling"><span class="tocnumber">1.2</span> <span class="toctext">Handling of failures in exception handling</span></a></li>
<li class="toclevel-2"><a href="error.html#Handling_of_exception_specification_violations_.28removed_in_C.2B.2B17.29"><span class="tocnumber">1.3</span> <span class="toctext">Handling of exception specification violations (removed in C++17)</span></a></li>
<li class="toclevel-2 tocsection-2"><a href="error.html#Exception_categories"><span class="tocnumber">1.4</span> <span class="toctext">Exception categories</span></a></li>
</ul>
</li>
<li class="toclevel-1 tocsection-3"><a href="error.html#Error_numbers"><span class="tocnumber">2</span> <span class="toctext">Error numbers</span></a></li>
<li class="toclevel-1 tocsection-4"><a href="error.html#Assertions"><span class="tocnumber">3</span> <span class="toctext">Assertions</span></a></li>
<li class="toclevel-1 tocsection-5"><a href="error.html#System_error"><span class="tocnumber">4</span> <span class="toctext">System error</span></a></li>
<li class="toclevel-1 tocsection-6"><a href="error.html#See_also"><span class="tocnumber">5</span> <span class="toctext">See also</span></a></li>
</ul>
</td></tr></table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/error&action=edit&section=1" title="Edit section: Exception handling">edit</a>]</span> <span class="mw-headline" id="Exception_handling">Exception handling</span></h3>
<p>The header <code><exception></code> provides several classes and functions related to exception handling in C++ programs.
</p>
<table class="t-dsc-begin">
<tr class="t-dsc-header">
<td colspan="2"> <div>Defined in header <code><exception></code> </div>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/exception.html" title="cpp/error/exception"> <span class="t-lines"><span>exception</span></span></a></div></div>
</td>
<td> base class for exceptions thrown by the standard library components <br /> <span class="t-mark">(class)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_exception&action=edit">[edit]</a></span>
</td></tr>
<tr>
<td colspan="2"> <h5> <span class="mw-headline" id="Capture_and_storage_of_exception_objects"> Capture and storage of exception objects </span></h5>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/uncaught_exception.html" title="cpp/error/uncaught exception"> <span class="t-lines"><span>uncaught_exception</span><span>uncaught_exceptions</span></span></a></div><div><span class="t-lines"><span></span><span><span class="t-mark-rev t-since-cxx17">(C++17)</span></span></span></div></div>
</td>
<td> checks if exception handling is currently in progress <br /> <span class="t-mark">(function)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_uncaught_exception&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/exception_ptr.html" title="cpp/error/exception ptr"> <span class="t-lines"><span>exception_ptr</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td> shared pointer type for handling exception objects <br /> <span class="t-mark">(typedef)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_exception_ptr&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/make_exception_ptr.html" title="cpp/error/make exception ptr"> <span class="t-lines"><span>make_exception_ptr</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td> creates an <span class="t-lc"><a href="error/exception_ptr.html" title="cpp/error/exception ptr">std::exception_ptr</a></span> from an exception object <br /> <span class="t-mark">(function template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_make_exception_ptr&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/current_exception.html" title="cpp/error/current exception"> <span class="t-lines"><span>current_exception</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td> captures the current exception in a <span class="t-lc"><a href="error/exception_ptr.html" title="cpp/error/exception ptr">std::exception_ptr</a></span> <br /> <span class="t-mark">(function)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_current_exception&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/rethrow_exception.html" title="cpp/error/rethrow exception"> <span class="t-lines"><span>rethrow_exception</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td> throws the exception from an <span class="t-lc"><a href="error/exception_ptr.html" title="cpp/error/exception ptr">std::exception_ptr</a></span> <br /> <span class="t-mark">(function)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_rethrow_exception&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/nested_exception.html" title="cpp/error/nested exception"> <span class="t-lines"><span>nested_exception</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td> a mixin type to capture and store current exceptions <br /> <span class="t-mark">(class)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_nested_exception&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/throw_with_nested.html" title="cpp/error/throw with nested"> <span class="t-lines"><span>throw_with_nested</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td> throws its argument with <span class="t-lc"><a href="error/nested_exception.html" title="cpp/error/nested exception">std::nested_exception</a></span> mixed in <br /> <span class="t-mark">(function template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_throw_with_nested&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/rethrow_if_nested.html" title="cpp/error/rethrow if nested"> <span class="t-lines"><span>rethrow_if_nested</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td> throws the exception from a <span class="t-lc"><a href="error/nested_exception.html" title="cpp/error/nested exception">std::nested_exception</a></span> <br /> <span class="t-mark">(function template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_rethrow_if_nested&action=edit">[edit]</a></span>
</td></tr>
<tr>
<td colspan="2"> <h5> <span class="mw-headline" id="Handling_of_failures_in_exception_handling"> Handling of failures in exception handling </span></h5>
</td></tr>
<tr class="t-dsc-header">
<td colspan="2"> <div>Defined in header <code><exception></code> </div>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/terminate.html" title="cpp/error/terminate"> <span class="t-lines"><span>terminate</span></span></a></div></div>
</td>
<td> function called when exception handling fails <br /> <span class="t-mark">(function)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_terminate&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/terminate_handler.html" title="cpp/error/terminate handler"> <span class="t-lines"><span>terminate_handler</span></span></a></div></div>
</td>
<td> the type of the function called by <span class="t-lc"><a href="error/terminate.html" title="cpp/error/terminate">std::terminate</a></span> <br /> <span class="t-mark">(typedef)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_terminate_handler&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/get_terminate.html" title="cpp/error/get terminate"> <span class="t-lines"><span>get_terminate</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td> obtains the current terminate_handler <br /> <span class="t-mark">(function)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_get_terminate&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/set_terminate.html" title="cpp/error/set terminate"> <span class="t-lines"><span>set_terminate</span></span></a></div></div>
</td>
<td> changes the function to be called by <span class="t-lc"><a href="error/terminate.html" title="cpp/error/terminate">std::terminate</a></span> <br /> <span class="t-mark">(function)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_set_terminate&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/bad_exception.html" title="cpp/error/bad exception"> <span class="t-lines"><span>bad_exception</span></span></a></div></div>
</td>
<td> exception thrown when <span class="t-lc"><a href="error/current_exception.html" title="cpp/error/current exception">std::current_exception</a></span> fails to copy the exception object <br /> <span class="t-mark">(class)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_bad_exception&action=edit">[edit]</a></span>
</td></tr>
<tr>
<td colspan="2"> <h5> <span class="mw-headline" id="Handling_of_exception_specification_violations_.28removed_in_C.2B.2B17.29"> Handling of exception specification violations (removed in C++17) </span></h5>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/unexpected.html" title="cpp/error/unexpected"> <span class="t-lines"><span>unexpected</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span></span></div></div>
</td>
<td> function called when dynamic exception specification is violated <br /> <span class="t-mark">(function)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_unexpected&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/unexpected_handler.html" title="cpp/error/unexpected handler"> <span class="t-lines"><span>unexpected_handler</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span></span></div></div>
</td>
<td> the type of the function called by <span class="t-lc"><a href="error/unexpected.html" title="cpp/error/unexpected">std::unexpected</a></span> <br /> <span class="t-mark">(typedef)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_unexpected_handler&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/get_unexpected.html" title="cpp/error/get unexpected"> <span class="t-lines"><span>get_unexpected</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span></span></div></div>
</td>
<td> obtains the current unexpected_handler <br /> <span class="t-mark">(function)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_get_unexpected&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/set_unexpected.html" title="cpp/error/set unexpected"> <span class="t-lines"><span>set_unexpected</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-until-cxx17">(until C++17)</span></span></span></div></div>
</td>
<td> changes the function to be called by <span class="t-lc"><a href="error/unexpected.html" title="cpp/error/unexpected">std::unexpected</a></span> <br /> <span class="t-mark">(function)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_set_unexpected&action=edit">[edit]</a></span>
</td></tr>
</table>
<h4><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/error&action=edit&section=2" title="Edit section: Exception categories">edit</a>]</span> <span class="mw-headline" id="Exception_categories">Exception categories</span></h4>
<p>Several convenience classes are predefined in the header <code><stdexcept></code> to report particular error conditions. These classes can be divided into two categories: <i>logic</i> errors and <i>runtime</i> errors. Logic errors are a consequence of faulty logic within the program and may be preventable. Runtime errors are due to events beyond the scope of the program and can not be easily predicted.
</p>
<table class="t-dsc-begin">
<tr class="t-dsc-header">
<td colspan="2"> <div>Defined in header <code><stdexcept></code> </div>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/logic_error/logic_error.html" title="cpp/error/logic error"> <span class="t-lines"><span>logic_error</span></span></a></div></div>
</td>
<td> exception class to indicate violations of logical preconditions or class invariants <br /> <span class="t-mark">(class)</span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/invalid_argument/invalid_argument.html" title="cpp/error/invalid argument"> <span class="t-lines"><span>invalid_argument</span></span></a></div></div>
</td>
<td> exception class to report invalid arguments <br /> <span class="t-mark">(class)</span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/domain_error/domain_error.html" title="cpp/error/domain error"> <span class="t-lines"><span>domain_error</span></span></a></div></div>
</td>
<td> exception class to report domain errors <br /> <span class="t-mark">(class)</span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/length_error/length_error.html" title="cpp/error/length error"> <span class="t-lines"><span>length_error</span></span></a></div></div>
</td>
<td> exception class to report attempts to exceed maximum allowed size <br /> <span class="t-mark">(class)</span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/out_of_range/out_of_range.html" title="cpp/error/out of range"> <span class="t-lines"><span>out_of_range</span></span></a></div></div>
</td>
<td> exception class to report arguments outside of expected range <br /> <span class="t-mark">(class)</span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/runtime_error/runtime_error.html" title="cpp/error/runtime error"> <span class="t-lines"><span>runtime_error</span></span></a></div></div>
</td>
<td> exception class to indicate conditions only detectable at run time <br /> <span class="t-mark">(class)</span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/range_error/range_error.html" title="cpp/error/range error"> <span class="t-lines"><span>range_error</span></span></a></div></div>
</td>
<td> exception class to report range errors in internal computations <br /> <span class="t-mark">(class)</span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/overflow_error/overflow_error.html" title="cpp/error/overflow error"> <span class="t-lines"><span>overflow_error</span></span></a></div></div>
</td>
<td> exception class to report arithmetic overflows <br /> <span class="t-mark">(class)</span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/underflow_error/underflow_error.html" title="cpp/error/underflow error"> <span class="t-lines"><span>underflow_error</span></span></a></div></div>
</td>
<td> exception class to report arithmetic underflows <br /> <span class="t-mark">(class)</span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/tx_exception.html" title="cpp/error/tx exception"> <span class="t-lines"><span>tx_exception</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-tm-ts t-mark-ts">(TM TS)</span></span></span></div></div>
</td>
<td> exception class to cancel atomic transactions <br /> <span class="t-mark">(class template)</span>
</td></tr>
</table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/error&action=edit&section=3" title="Edit section: Error numbers">edit</a>]</span> <span class="mw-headline" id="Error_numbers">Error numbers</span></h3>
<table class="t-dsc-begin">
<tr class="t-dsc-header">
<td colspan="2"> <div>Defined in header <code><cerrno></code> </div>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/errno.html" title="cpp/error/errno"> <span class="t-lines"><span>errno</span></span></a></div></div>
</td>
<td> macro which expands to POSIX-compatible thread-local error number variable<br /><span class="t-mark">(macro variable)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_errno&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/errno_macros.html" title="cpp/error/errno macros"> <span class="t-lines"><span>E2BIG, EACCES, ..., EXDEV</span></span></a></div></div>
</td>
<td> macros for standard POSIX-compatible error conditions <br /> <span class="t-mark">(macro constant)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_errno_macros&action=edit">[edit]</a></span>
</td></tr>
</table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/error&action=edit&section=4" title="Edit section: Assertions">edit</a>]</span> <span class="mw-headline" id="Assertions">Assertions</span></h3>
<p>Assertions help to implement checking of preconditions in programs.
</p>
<table class="t-dsc-begin">
<tr class="t-dsc">
<td> <a href="language/static_assert.html" title="cpp/language/static assert"> static assertion </a>
</td>
<td> performs compile-time assertion checking <span class="t-mark-rev t-since-cxx11">(since C++11)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/language/dsc_static_assert&action=edit">[edit]</a></span>
</td></tr>
</table>
<table class="t-dsc-begin">
<tr class="t-dsc-header">
<td colspan="2"> <div>Defined in header <code><cassert></code> </div>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/assert.html" title="cpp/error/assert"> <span class="t-lines"><span>assert</span></span></a></div></div>
</td>
<td> aborts the program if the user-specified condition is not <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">true</span></span></span>. May be disabled for release builds <br /> <span class="t-mark">(function macro)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_assert&action=edit">[edit]</a></span>
</td></tr>
</table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/error&action=edit&section=5" title="Edit section: System error">edit</a>]</span> <span class="mw-headline" id="System_error">System error</span></h3>
<p>The header <code><system_error></code> defines types and functions used to report error conditions originating from the operating system, streams I/O, <span class="t-lc"><a href="thread/future.html" title="cpp/thread/future">std::future</a></span>, or other low-level APIs.
</p>
<table class="t-dsc-begin">
<tr class="t-dsc-header">
<td colspan="2"> <div>Defined in header <code><system_error></code> </div>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/error_category.html" title="cpp/error/error category"> <span class="t-lines"><span>error_category</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td> base class for error categories <br /> <span class="t-mark">(class)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_error_category&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/generic_category.html" title="cpp/error/generic category"> <span class="t-lines"><span>generic_category</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td> identifies the generic error category <br /> <span class="t-mark">(function)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_generic_category&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/system_category.html" title="cpp/error/system category"> <span class="t-lines"><span>system_category</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td> identifies the operating system error category <br /> <span class="t-mark">(function)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_system_category&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/error_condition.html" title="cpp/error/error condition"> <span class="t-lines"><span>error_condition</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td> holds a portable error code <br /> <span class="t-mark">(class)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_error_condition&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/errc.html" title="cpp/error/errc"> <span class="t-lines"><span>errc</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td> the <span class="t-lc"><a href="error/error_condition.html" title="cpp/error/error condition">std::error_condition</a></span> enumeration listing all standard <a href="header/cerrno.html" title="cpp/header/cerrno"><tt><cerrno></tt></a> macro constants <br /> <span class="t-mark">(class)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_errc&action=edit">[edit]</a></span>
</td></tr>
<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="error/error_code.html" title="cpp/error/error code"> <span class="t-lines"><span>error_code</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
</td>
<td> holds a platform-dependent error code <br /> <span class="t-mark">(class)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_error_code&action=edit">[edit]</a></span>
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<td> <div class="t-dsc-member-div"><div><a href="error/system_error.html" title="cpp/error/system error"> <span class="t-lines"><span>system_error</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div>
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<td> exception class used to report conditions that have an error_code <br /> <span class="t-mark">(class)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/error/dsc_system_error&action=edit">[edit]</a></span>
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<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/error&action=edit&section=6" title="Edit section: See also">edit</a>]</span> <span class="mw-headline" id="See_also">See also</span></h3>
<table class="t-dsc-begin">
<tr class="t-dsc">
<td colspan="2"> <div class="t-dsc-see"><span><a href="../c/error.html" title="c/error">C documentation</a></span> for <span class="t-dsc-see-tt"><span>Error handling</span></span></div>
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