<!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="API documentation for the Rust `abort` fn in crate `std`."><meta name="keywords" content="rust, rustlang, rust-lang, abort"><title>std::process::abort - Rust</title><link rel="stylesheet" type="text/css" href="../../normalize1.35.0.css"><link rel="stylesheet" type="text/css" href="../../rustdoc1.35.0.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../dark1.35.0.css"><link rel="stylesheet" type="text/css" href="../../light1.35.0.css" id="themeStyle"><script src="../../storage1.35.0.js"></script><noscript><link rel="stylesheet" href="../../noscript1.35.0.css"></noscript><link rel="shortcut icon" href="../../favicon1.35.0.ico"><style type="text/css">#crate-search{background-image:url("../../down-arrow1.35.0.svg");}</style></head><body class="rustdoc fn"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><a href='../../std/index.html'><img src='../../rust-logo1.35.0.png' alt='logo' width='100'></a><div class="sidebar-elems"><p class='location'><a href='../index.html'>std</a>::<wbr><a href='index.html'>process</a></p><script>window.sidebarCurrent = {name: 'abort', ty: 'fn', relpath: ''};</script><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../brush1.35.0.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../theme1.35.0.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><a id="settings-menu" href="../../settings.html"><img src="../../wheel1.35.0.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class='fqn'><span class='out-of-band'><span class='since' title='Stable since Rust version 1.17.0'>1.17.0</span><span id='render-detail'><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class='inner'>−</span>]</a></span><a class='srclink' href='../../src/std/process.rs.html#1545-1547' title='goto source code'>[src]</a></span><span class='in-band'>Function <a href='../index.html'>std</a>::<wbr><a href='index.html'>process</a>::<wbr><a class="fn" href=''>abort</a></span></h1><pre class='rust fn'>pub fn abort() -> <a class="primitive" href="../primitive.never.html">!</a></pre><div class='docblock'><p>Terminates the process in an abnormal fashion.</p>
<p>The function will never return and will immediately terminate the current
process in a platform specific "abnormal" manner.</p>
<p>Note that because this function never returns, and that it terminates the
process, no destructors on the current stack or any other thread's stack
will be run.</p>
<p>This is in contrast to the default behaviour of <a href="../../std/macro.panic.html"><code>panic!</code></a> which unwinds
the current thread's stack and calls all destructors.
When <code>panic="abort"</code> is set, either as an argument to <code>rustc</code> or in a
crate's Cargo.toml, <a href="../../std/macro.panic.html"><code>panic!</code></a> and <code>abort</code> are similar. However,
<a href="../../std/macro.panic.html"><code>panic!</code></a> will still call the <a href="../../std/panic/fn.set_hook.html">panic hook</a> while <code>abort</code> will not.</p>
<p>If a clean shutdown is needed it is recommended to only call
this function at a known point where there are no more destructors left
to run.</p>
<h1 id="examples" class="section-header"><a href="#examples">Examples</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">process</span>;
<span class="kw">fn</span> <span class="ident">main</span>() {
<span class="macro">println</span><span class="macro">!</span>(<span class="string">"aborting"</span>);
<span class="ident">process</span>::<span class="ident">abort</span>();
<span class="comment">// execution never gets here</span>
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=%23!%5Ballow(unused)%5D%0Ause%20std%3A%3Aprocess%3B%0A%0Afn%20main()%20%7B%0A%20%20%20%20println!(%22aborting%22)%3B%0A%0A%20%20%20%20process%3A%3Aabort()%3B%0A%0A%20%20%20%20%2F%2F%20execution%20never%20gets%20here%0A%7D">Run</a></pre></div>
<p>The <code>abort</code> function terminates the process, so the destructor will not
get run on the example below:</p>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">process</span>;
<span class="kw">struct</span> <span class="ident">HasDrop</span>;
<span class="kw">impl</span> <span class="ident">Drop</span> <span class="kw">for</span> <span class="ident">HasDrop</span> {
<span class="kw">fn</span> <span class="ident">drop</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) {
<span class="macro">println</span><span class="macro">!</span>(<span class="string">"This will never be printed!"</span>);
}
}
<span class="kw">fn</span> <span class="ident">main</span>() {
<span class="kw">let</span> <span class="ident">_x</span> <span class="op">=</span> <span class="ident">HasDrop</span>;
<span class="ident">process</span>::<span class="ident">abort</span>();
<span class="comment">// the destructor implemented for HasDrop will never get run</span>
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=%23!%5Ballow(unused)%5D%0Ause%20std%3A%3Aprocess%3B%0A%0Astruct%20HasDrop%3B%0A%0Aimpl%20Drop%20for%20HasDrop%20%7B%0A%20%20%20%20fn%20drop(%26mut%20self)%20%7B%0A%20%20%20%20%20%20%20%20println!(%22This%20will%20never%20be%20printed!%22)%3B%0A%20%20%20%20%7D%0A%7D%0A%0Afn%20main()%20%7B%0A%20%20%20%20let%20_x%20%3D%20HasDrop%3B%0A%20%20%20%20process%3A%3Aabort()%3B%0A%20%20%20%20%2F%2F%20the%20destructor%20implemented%20for%20HasDrop%20will%20never%20get%20run%0A%7D">Run</a></pre></div>
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