File: ACL2-PC_colon__colon_PROTECT.html

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<head><title>ACL2-PC_colon__colon_PROTECT.html  --  ACL2 Version 3.1</title></head>
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<h3>ACL2-PC::PROTECT</h3>(macro)
<code>   </code>run the given instructions, reverting to existing state upon
<code>   </code>failure
<pre>Major Section:  <a href="PROOF-CHECKER-COMMANDS.html">PROOF-CHECKER-COMMANDS</a>
</pre><p>


<pre>
Example:
(protect induct p prove)
<p>
General Form:
(protect &amp;rest instruction-list)
</pre>

<code>Protect</code> is the same as <code>do-strict</code>, except that as soon as an
instruction ``fails'', the state-stack reverts to what it was before
the <code>protect</code> instruction began, and <code>restore</code> is given the same meaning
that it had before the <code>protect</code> instruction began.  See the
documentation for <code>do-strict</code>.
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