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</pre><pre class="rust ">
<span class="comment">// Copyright 2013 The Rust Project Developers. See the COPYRIGHT</span>
<span class="comment">// file at the top-level directory of this distribution and at</span>
<span class="comment">// http://rust-lang.org/COPYRIGHT.</span>
<span class="comment">//</span>
<span class="comment">// Licensed under the Apache License, Version 2.0 &lt;LICENSE-APACHE or</span>
<span class="comment">// http://www.apache.org/licenses/LICENSE-2.0&gt; or the MIT license</span>
<span class="comment">// &lt;LICENSE-MIT or http://opensource.org/licenses/MIT&gt;, at your</span>
<span class="comment">// option. This file may not be copied, modified, or distributed</span>
<span class="comment">// except according to those terms.</span>

<span class="kw">use</span> <span class="ident">fmt</span>;
<span class="kw">use</span> <span class="ident">io</span>::<span class="ident">prelude</span>::<span class="kw-2">*</span>;
<span class="kw">use</span> <span class="ident">sys</span>::<span class="ident">stdio</span>::{<span class="ident">Stderr</span>, <span class="ident">stderr_prints_nothing</span>};
<span class="kw">use</span> <span class="ident">thread</span>;

<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">dumb_print</span>(<span class="ident">args</span>: <span class="ident">fmt</span>::<span class="ident">Arguments</span>) {
    <span class="kw">if</span> <span class="ident">stderr_prints_nothing</span>() {
        <span class="kw">return</span>
    }
    <span class="kw">let</span> <span class="kw">_</span> <span class="op">=</span> <span class="ident">Stderr</span>::<span class="ident">new</span>().<span class="ident">map</span>(<span class="op">|</span><span class="kw-2">mut</span> <span class="ident">stderr</span><span class="op">|</span> <span class="ident">stderr</span>.<span class="ident">write_fmt</span>(<span class="ident">args</span>));
}

<span class="comment">// Other platforms should use the appropriate platform-specific mechanism for</span>
<span class="comment">// aborting the process.  If no platform-specific mechanism is available,</span>
<span class="comment">// ::intrinsics::abort() may be used instead.  The above implementations cover</span>
<span class="comment">// all targets currently supported by libstd.</span>

<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">abort</span>(<span class="ident">args</span>: <span class="ident">fmt</span>::<span class="ident">Arguments</span>) <span class="op">-&gt;</span> <span class="op">!</span> {
    <span class="ident">dumb_print</span>(<span class="macro">format_args</span><span class="macro">!</span>(<span class="string">&quot;fatal runtime error: {}\n&quot;</span>, <span class="ident">args</span>));
    <span class="kw">unsafe</span> { ::<span class="ident">sys</span>::<span class="ident">abort_internal</span>(); }
}

<span class="attribute">#[<span class="ident">allow</span>(<span class="ident">dead_code</span>)]</span> <span class="comment">// stack overflow detection not enabled on all platforms</span>
<span class="kw">pub</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">report_overflow</span>() {
    <span class="ident">dumb_print</span>(<span class="macro">format_args</span><span class="macro">!</span>(<span class="string">&quot;\nthread &#39;{}&#39; has overflowed its stack\n&quot;</span>,
                            <span class="ident">thread</span>::<span class="ident">current</span>().<span class="ident">name</span>().<span class="ident">unwrap_or</span>(<span class="string">&quot;&lt;unknown&gt;&quot;</span>)));
}
</pre>
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