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44 lines
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<title>exception_ptr_rethrow<T, EC, EP> - Boost.Outcome documentation</title>
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<div class="titlepage"><div><div><h1 style="clear: both"><code>exception_ptr_rethrow<T, EC, EP></code></h1></div></div></div>
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<p><em>Note</em>: This policy class specialisation can only be used with <code>basic_outcome</code>, not <code>basic_result</code>. Use <a href="../../reference/policies/exception_ptr_rethrow_result.html" class="api-reference"><code>exception_ptr_rethrow<T, EC, void></code></a>
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with <code>basic_result</code>.</p>
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<p>Policy class defining that the ADL discovered free function <code>rethrow_exception(impl.assume_exception())</code> if possible, followed by <code>rethrow_exception(impl.assume_error())</code> should be called on incorrect wide value observation. Generally this will ADL discover
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<a href="https://en.cppreference.com/w/cpp/error/rethrow_exception" class="api-reference" target="_blank"><i class="fa fa-book" aria-hidden="true"></i> <code>std::rethrow_exception()</code></a>
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or <code>boost::rethrow_exception()</code> depending on the <code>EC</code> type.</p>
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<p>Incorrect wide error observation performs:</p>
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<div class="highlight"><pre class="chroma"><code class="language-c++" data-lang="c++"><span class="n">BOOST_OUTCOME_THROW_EXCEPTION</span><span class="p">(</span><span class="n">bad_outcome_access</span><span class="p">(</span><span class="s">"no error"</span><span class="p">));</span>
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</code></pre></div>
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<p>Incorrect wide exception observation performs:</p>
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<div class="highlight"><pre class="chroma"><code class="language-c++" data-lang="c++"><span class="n">BOOST_OUTCOME_THROW_EXCEPTION</span><span class="p">(</span><span class="n">bad_outcome_access</span><span class="p">(</span><span class="s">"no exception"</span><span class="p">));</span>
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</code></pre></div>
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<p>Inherits publicly from <a href="../../reference/policies/base.html" class="api-reference"><code>base</code></a>
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, and its narrow value, error and exception observer policies are inherited from there.</p>
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<p><em>Requires</em>: Nothing.</p>
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<p><em>Namespace</em>: <code>BOOST_OUTCOME_V2_NAMESPACE::policy</code></p>
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<p><em>Header</em>: <code><boost/outcome/policy/outcome_exception_ptr_rethrow.hpp></code></p>
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</div><p><small>Last revised: February 01, 2019 at 23:42:52 UTC</small></p>
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