283 lines
13 KiB
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283 lines
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<title>1989/fubar - Best self-modifying program</title>
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<div class="header">
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<img src="../../png/ioccc.png" alt="IOCCC image by Matt Zucker" width=300 height=110>
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<h1>The International Obfuscated C Code Contest</h1>
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<h2>1989/fubar - Best self-modifying program</h2>
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<a class="Left Disabled" href="#">first entry</a>
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<a class="Left" href="../index.html">↑ 1989 ↑</a>
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<a class="Left" href="../jar.1/index.html">jar.1 →</a>
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<a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1989/fubar/fubar.c">C code</a>
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<a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1989/fubar/Makefile">Makefile</a>
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<h2 id="author"><a name="author"></a>Author:</h2>
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<ul>
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<li>Name: <a href="../../authors.html#Jay_Vosburgh">Jay Vosburgh</a><br>
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Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)</li>
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<h2 id="to-build">To build:</h2>
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<pre><code> make all</code></pre>
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<h3 id="bugs-and-misfeatures">Bugs and (Mis)features:</h3>
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<p>The current status of this entry is:</p>
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<pre><code> STATUS: known bug - please help us fix</code></pre>
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<p>For more detailed information see <a href="../../bugs.html#1989_fubar">1989 fubar bugs</a>.</p>
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<h2 id="to-use">To use:</h2>
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<pre><code> ./fubar <number></code></pre>
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<h2 id="try">Try:</h2>
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<pre><code> ./try.sh # run on 1 - 7
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./fubar.sh 2 # run via script
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./fubar 2 # run directly</code></pre>
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<h2 id="judges-remarks">Judges’ remarks:</h2>
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<p>Run this with a single digit argument (or wait a long time and risk an infinite
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loop as described in the <a href="../../bugs.html#1989_fubar">1989 fubar bugs</a> file).</p>
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<p>The blank line at the beginning of the source is mandatory.
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Do you know why?</p>
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<p>NOTE: the file <code>ouroboros.c</code> is created by the program itself so this is why it
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is not in the repository.</p>
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<h2 id="authors-remarks">Author’s remarks:</h2>
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<p>In a nutshell, this is probably the slowest and most
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obnoxious factorial program ever written. Unfortunately,
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the name of the C source must be <code>ouroboros.c</code>; the name is
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hard-coded into the program.</p>
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<p>The source is a legal shell script and a legal C program.
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The shell script compiles itself, and then executes the
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resulting binary, giving the source as input. The program
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works by successively modifying #define lines each pass through.</p>
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<p>Both <code>indent</code> and <code>cb</code> will damage the program, <code>indent</code>
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much more so.</p>
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<!--
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Copyright © 1984-2024 by Landon Curt Noll. All Rights Reserved.
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You are free to share and adapt this file under the terms of this license:
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Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
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For more information, see:
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https://creativecommons.org/licenses/by-sa/4.0/
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<h1 id="inventory-for-1989fubar"><a name="inventory"></a>Inventory for 1989/fubar</h1>
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<p><a href="#top">Jump to top</a></p>
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<h2 id="primary-files">Primary files</h2>
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<ul>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1989/fubar/fubar.c">fubar.c</a> - entry source</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1989/fubar/Makefile">Makefile</a> - entry Makefile</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1989/fubar/fubar.orig.c">fubar.orig.c</a> - original source</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1989/fubar/fubar.sh">fubar.sh</a> - how to run fubar</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1989/fubar/try.sh">try.sh</a> - how to run</li>
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</ul>
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<h2 id="secondary-files">Secondary files</h2>
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<ul>
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<li><a href="1989_fubar.tar.bz2">1989_fubar.tar.bz2</a> - download entry tarball</li>
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<li><a href="index.html">index.html</a> - this web page</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1989/fubar/README.md">README.md</a> - markdown source for this web page</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1989/fubar/.entry.json">.entry.json</a> - description of entry in JSON</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1989/fubar/.gitignore">.gitignore</a> - list of files that should not be committed under git</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1989/fubar/.path">.path</a> - directory path from top directory</li>
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</ul>
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Copyright © 1984-2024 by Landon Curt Noll. All Rights Reserved.
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You are free to share and adapt this file under the terms of this license:
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Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
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<p>All IOCCC content including this file and web page are:</p>
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<b> Copyright © 1984-2024 by Landon Curt Noll. <a href="https://creativecommons.org/faq/#what-does-some-rights-reserved-mean">Some Rights Reserved</a>.</b>
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<h2>Coda</h2>
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<p><a href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fioccc-src.github.io%2Ftemp-test-ioccc%2F1989%2Ffubar%2Findex.html">Nu HTML check this web page</a></p>
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