75 lines
4.4 KiB
HTML
75 lines
4.4 KiB
HTML
<!DOCTYPE html>
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<html lang="zh" dir="ltr" class="client-nojs" xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh">
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<title>std::make_exception_ptr</title>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_error_make_exception_ptr skin-cppreference2 action-view cpp-navbar">
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<div id="cpp-content-base">
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::</span>make_exception_ptr</h1>
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<div id="bodyContent">
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-error.html">error</a></span></div>
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<div id="mw-content-text" lang="zh" dir="ltr" class="mw-content-ltr" xml:lang="zh">
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<table class="t-dcl-begin">
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<div>定义于头文件 <code><a href="cpp-header-exception.html"><exception></a></code></div>
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<td></td>
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<tr class="t-dcl t-since-cxx11">
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1"><</span> <span class="kw1">class</span> E <span class="sy1">></span><br />
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<a href="cpp-error-exception_ptr.html"><span class="kw776">std::<span class="me2">exception_ptr</span></span></a> make_exception_ptr<span class="br0">(</span> E e <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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<td class="t-dcl-nopad"></td>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 起)</span></td>
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<p>创建一个保有到 <code>e</code> 副本的引用的 <span class="t-lc"><a href="cpp-error-exception_ptr.html">std::exception_ptr</a></span> 。这如同以下列代码执行：</p>
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<div dir="ltr" class="mw-geshi" style="text-align: left;">
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<div class="cpp source-cpp">
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<pre class="de1"><span class="kw1">try</span> <span class="br0">{</span>
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<span class="kw1">throw</span> e<span class="sy4">;</span>
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<span class="br0">}</span> <span class="kw1">catch</span><span class="br0">(</span>...<span class="br0">)</span> <span class="br0">{</span>
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<span class="kw1">return</span> <a href="cpp-error-current_exception.html"><span class="kw777">std::<span class="me2">current_exception</span></span></a><span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
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<span class="br0">}</span></pre></div>
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<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">参数</span></h3>
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<p>（无）</p>
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<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">返回值</span></h3>
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<p>保有到 <code>e</code> 副本，或到 <span class="t-lc"><a href="cpp-memory-new-bad_alloc.html">std::bad_alloc</a></span> 实例，或到 <span class="t-lc"><a href="cpp-error-bad_exception.html">std::bad_exception</a></span> 实例的引用的 <span class="t-lc"><a href="cpp-error-exception_ptr.html">std::exception_ptr</a></span> 实例（参阅 <span class="t-lc"><a href="cpp-error-current_exception.html">std::current_exception</a></span> ）。</p>
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<h3><span class="mw-headline" id=".E6.B3.A8.E6.84.8F">注意</span></h3>
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<p>参数按值传递，并受切片影响。</p>
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<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">参阅</span></h3>
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<table class="t-dsc-begin">
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<div class="t-dsc-member-div">
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<div><a href="cpp-error-current_exception.html"><span class="t-lines"><span>current_exception</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
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</div>
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</td>
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<td>捕获当前异常到 <span class="t-lc"><a href="cpp-error-exception_ptr.html">std::exception_ptr</a></span> 之中<br />
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<span class="t-mark">(函数)</span></td>
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