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<title>error_code_throw_as_system_error&lt;T, EC, void&gt; - Boost.Outcome documentation</title>
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  <div class="titlepage"><div><div><h1 style="clear: both"><code>error_code_throw_as_system_error&lt;T, EC, void&gt;</code></h1></div></div></div>
  <p><em>Note</em>: This policy class specialisation can only be used with <code>basic_result</code>, not <code>basic_outcome</code>. Use <a href="../../reference/policies/error_code_throw_as_system_error_outcome.html" class="api-reference"><code>error_code_throw_as_system_error&lt;T, EC, EP&gt;</code></a>
 with <code>basic_outcome</code>.</p>

<p>Policy class defining that the ADL discovered free function <code>outcome_throw_as_system_error_with_payload(impl.assume_error())</code> should be called on incorrect wide value observation. <a href="../../reference/functions/policy.html">Some precanned overloads of that function are listed here</a>.</p>

<p>Incorrect wide error observation performs:</p>
<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_result_access</span><span class="p">(</span><span class="s">&#34;no error&#34;</span><span class="p">));</span>
</code></pre></div>
<p>Inherits publicly from <a href="../../reference/policies/base.html" class="api-reference"><code>base</code></a>
, and its narrow value, error and exception observer policies are inherited from there.</p>

<p><em>Requires</em>: Nothing.</p>

<p><em>Namespace</em>: <code>BOOST_OUTCOME_V2_NAMESPACE::policy</code></p>

<p><em>Header</em>: <code>&lt;boost/outcome/policy/result_error_code_throw_as_system_error.hpp&gt;</code></p>


        </div><p><small>Last revised: February 01, 2019 at 23:42:52 UTC</small></p>
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