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<title>std::basic_stacktrace&lt;Allocator&gt;::rend, std::basic_stacktrace&lt;Allocator&gt;::crend</title>
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::basic_stacktrace&lt;Allocator&gt;::</span>rend, <span style="font-size:0.7em; line-height:130%">std::basic_stacktrace&lt;Allocator&gt;::</span>crend</h1>
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<div id="contentSub"><span class="subpages">&lt; <a href="cpp.html">cpp</a>&lrm; | <a href="cpp-utility.html">utility</a>&lrm; | <a href="cpp-utility-basic_stacktrace.html">basic stacktrace</a></span></div>
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<div><span class="mw-geshi cpp source-cpp">const_reverse_iterator rend<span class="br0">(</span><span class="br0">)</span> &nbsp;<span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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<td>(1)</td>
<td><span class="t-mark-rev t-since-cxx23">(C++23 &#36215;)</span></td>
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<div><span class="mw-geshi cpp source-cpp">const_reverse_iterator crend<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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<td>(2)</td>
<td><span class="t-mark-rev t-since-cxx23">(C++23 &#36215;)</span></td>
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<p>&#36820;&#22238;&#25351;&#21521;&#36870;&#21521; <code>basic_stacktrace</code> &#30340;&#26411;&#23614;&#26465;&#30446;&#21518;&#19968;&#20301;&#32622;&#30340;&#36870;&#21521;&#36845;&#20195;&#22120;&#12290;&#23427;&#23545;&#24212;&#21407;&#26412; <code>basic_stacktrace</code> &#30340;&#39318;&#26465;&#30446;&#20043;&#21069;&#30340;&#36845;&#20195;&#22120;&#12290;&#27492;&#36845;&#20195;&#22120;&#34920;&#29616;&#20026;&#21344;&#20301;&#31526;&#65292;&#35797;&#22270;&#35299;&#24341;&#29992;&#23427;&#23548;&#33268;&#26410;&#23450;&#20041;&#34892;&#20026;&#12290;</p>
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<p><img alt="range-rbegin-rend.svg" src="range-rbegin-rend.svg" width="589" height="250" /></p>
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<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">&#21442;&#25968;</span></h3>
<p>&#65288;&#26080;&#65289;</p>
<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">&#36820;&#22238;&#20540;</span></h3>
<p>&#36870;&#21521; <code>basic_stacktrace</code> &#30340;&#23614;&#36845;&#20195;&#22120;&#12290;</p>
<h3><span class="mw-headline" id=".E5.A4.8D.E6.9D.82.E5.BA.A6">&#22797;&#26434;&#24230;</span></h3>
<p>&#24120;&#25968;&#12290;</p>
<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">&#31034;&#20363;</span></h3>
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<pre class="de1"><span class="co2">#include &lt;algorithm&gt;</span>
<span class="co2">#include &lt;iostream&gt;</span>
<span class="co2">#include &lt;stacktrace&gt;</span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span>
<span class="br0">{</span>
<span class="kw4">auto</span> trace <span class="sy1">=</span> std<span class="sy4">::</span><span class="me2">stacktrace</span><span class="sy4">::</span><span class="me2">current</span><span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw4">auto</span> empty_trace <span class="sy1">=</span> std<span class="sy4">::</span><span class="me2">stacktrace</span><span class="br0">{</span><span class="br0">}</span><span class="sy4">;</span>
<span class="co1">// &#25171;&#21360; stacktrace &#12290;</span>
<a href="cpp-algorithm-for_each.html"><span class="kw1568">std::<span class="me2">for_each</span></span></a><span class="br0">(</span>trace.<span class="me1">rbegin</span><span class="br0">(</span><span class="br0">)</span>, trace.<span class="me1">rend</span><span class="br0">(</span><span class="br0">)</span>,
<span class="br0">[</span><span class="br0">]</span><span class="br0">(</span><span class="kw4">const</span> <span class="kw4">auto</span><span class="sy3">&amp;</span> f<span class="br0">)</span> <span class="br0">{</span> <a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> f <span class="sy1">&lt;&lt;</span> <span class="st0">&#39;<span class="es1">\n</span>&#39;</span><span class="sy4">;</span> <span class="br0">}</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">if</span> <span class="br0">(</span>empty_trace.<span class="me1">rbegin</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1">==</span> empty_trace.<span class="me1">rend</span><span class="br0">(</span><span class="br0">)</span><span class="br0">)</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;stacktrace &#39;empty_trace&#39; is indeed empty.<span class="es1">\n</span>&quot;</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div>
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<p>&#21487;&#33021;&#30340;&#36755;&#20986;&#65306;</p>
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<pre class="de1">0x0000000000402A29 in ./prog.exe
__libc_start_main in /lib/x86_64-linux-gnu/libc.so.6
0x0000000000402BA5 in ./prog.exe
stacktrace &#39;empty_trace&#39; is indeed empty.</pre></div>
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<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">&#21442;&#38405;</span></h3>
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<div><a href="cpp-utility-basic_stacktrace-rbegin.html"><span class="t-lines"><span>rbegin</span><span>crbegin</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx23">(C++23)</span></span></span></div>
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<td>&#36820;&#22238;&#25351;&#21521;&#36215;&#22987;&#30340;&#36870;&#21521;&#36845;&#20195;&#22120;<br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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