| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Demangle Rust compiler symbol names."><title>rustc_demangle - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../static.files/rustdoc-ca0dd0c4.css"><meta name="rustdoc-vars" data-root-path="../" data-static-root-path="../static.files/" data-current-crate="rustc_demangle" data-themes="" data-resource-suffix="" data-rustdoc-version="1.92.0 (ded5c06cf 2025-12-08)" data-channel="1.92.0" data-search-js="search-d69d8955.js" data-stringdex-js="stringdex-c3e638e9.js" data-settings-js="settings-c38705f0.js" ><script src="../static.files/storage-e2aeef58.js"></script><script defer src="../crates.js"></script><script defer src="../static.files/main-ce535bd0.js"></script><noscript><link rel="stylesheet" href="../static.files/noscript-263c88ec.css"></noscript><link rel="alternate icon" type="image/png" href="../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../static.files/favicon-044be391.svg"></head><body class="rustdoc mod crate"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><rustdoc-topbar><h2><a href="#">Crate rustc_demangle</a></h2></rustdoc-topbar><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../rustc_demangle/index.html">rustc_<wbr>demangle</a><span class="version">0.1.27</span></h2></div><div class="sidebar-elems"><ul class="block"><li><a id="all-types" href="all.html">All Items</a></li></ul><section id="rustdoc-toc"><h3><a href="#">Sections</a></h3><ul class="block top-toc"><li><a href="#examples" title="Examples">Examples</a></li></ul><h3><a href="#structs">Crate Items</a></h3><ul class="block"><li><a href="#structs" title="Structs">Structs</a></li><li><a href="#functions" title="Functions">Functions</a></li></ul></section><div id="rustdoc-modnav"></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><section id="main-content" class="content"><div class="main-heading"><h1>Crate <span>rustc_<wbr>demangle</span> <button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="../src/rustc_demangle/lib.rs.html#1-588">Source</a> </span></div><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Demangle Rust compiler symbol names.</p> |
| <p>This crate provides a <code>demangle</code> function which will return a <code>Demangle</code> |
| sentinel value that can be used to learn about the demangled version of a |
| symbol name. The demangled representation will be the same as the original |
| if it doesn’t look like a mangled symbol name.</p> |
| <p><code>Demangle</code> can be formatted with the <code>Display</code> trait. The alternate |
| modifier (<code>#</code>) can be used to format the symbol name without the |
| trailing hash value.</p> |
| <h2 id="examples"><a class="doc-anchor" href="#examples">§</a>Examples</h2> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>rustc_demangle::demangle; |
| |
| <span class="macro">assert_eq!</span>(demangle(<span class="string">"_ZN4testE"</span>).to_string(), <span class="string">"test"</span>); |
| <span class="macro">assert_eq!</span>(demangle(<span class="string">"_ZN3foo3barE"</span>).to_string(), <span class="string">"foo::bar"</span>); |
| <span class="macro">assert_eq!</span>(demangle(<span class="string">"foo"</span>).to_string(), <span class="string">"foo"</span>); |
| <span class="comment">// With hash |
| </span><span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{}"</span>, demangle(<span class="string">"_ZN3foo17h05af221e174051e9E"</span>)), <span class="string">"foo::h05af221e174051e9"</span>); |
| <span class="comment">// Without hash |
| </span><span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:#}"</span>, demangle(<span class="string">"_ZN3foo17h05af221e174051e9E"</span>)), <span class="string">"foo"</span>);</code></pre></div></div></details><h2 id="structs" class="section-header">Structs<a href="#structs" class="anchor">§</a></h2><dl class="item-table"><dt><a class="struct" href="struct.Demangle.html" title="struct rustc_demangle::Demangle">Demangle</a></dt><dd>Representation of a demangled symbol name.</dd><dt><a class="struct" href="struct.TryDemangleError.html" title="struct rustc_demangle::TryDemangleError">TryDemangle<wbr>Error</a></dt><dd>Error returned from the <code>try_demangle</code> function below when demangling fails.</dd></dl><h2 id="functions" class="section-header">Functions<a href="#functions" class="anchor">§</a></h2><dl class="item-table"><dt><a class="fn" href="fn.demangle.html" title="fn rustc_demangle::demangle">demangle</a></dt><dd>De-mangles a Rust symbol into a more readable version</dd><dt><a class="fn" href="fn.try_demangle.html" title="fn rustc_demangle::try_demangle">try_<wbr>demangle</a></dt><dd>The same as <code>demangle</code>, except return an <code>Err</code> if the string does not appear |
| to be a Rust symbol, rather than “demangling” the given string as a no-op.</dd></dl></section></div></main></body></html> |
