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<html xmlns="http://www.w3.org/1999/xhtml"><head><title>DEADBEEF</title><link rel="stylesheet" href="../../jargon.css" type="text/css"/><meta name="generator" content="DocBook XSL Stylesheets V1.61.0"/><link rel="home" href="../index.html" title="The Jargon File"/><link rel="up" href="../D.html" title="D"/><link rel="previous" href="dead-tree-version.html" title="dead-tree version"/><link rel="next" href="deadlock.html" title="deadlock"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">DEADBEEF</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="dead-tree-version.html">Prev</a> </td><th width="60%" align="center">D</th><td width="20%" align="right"> <a accesskey="n" href="deadlock.html">Next</a></td></tr></table><hr/></div><dt><a id="DEADBEEF"/><dt xmlns="" id="DEADBEEF"><b>DEADBEEF</b>: <span xmlns="http://www.w3.org/1999/xhtml" class="pronunciation">/ded·beef/</span>, <span xmlns="http://www.w3.org/1999/xhtml" class="grammar">n.</span></dt></dt><dd><p> The hexadecimal word-fill pattern for freshly allocated memory under
a number of IBM environments, including the RS/6000. Some modern debugging
tools deliberately fill freed memory with this value as a way of converting
<a href="../H/heisenbug.html"><i class="glossterm">heisenbug</i></a>s into <a href="../B/Bohr-bug.html"><i class="glossterm">Bohr bug</i></a>s.
As in &#8220;<span class="quote">Your program is DEADBEEF</span>&#8221; (meaning gone, aborted,
flushed from memory); if you start from an odd half-word boundary, of
course, you have BEEFDEAD. See also the anecdote under
<a href="../F/fool.html"><i class="glossterm">fool</i></a> and
<a href="dead-beef-attack.html"><i class="glossterm">dead beef attack</i></a>.</p></dd><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="dead-tree-version.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="../D.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="deadlock.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">dead-tree version </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> deadlock</td></tr></table></div></body></html>