mingw/html/ext/Opcode/ops.html

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   5 <title>ops - Perl pragma to restrict unsafe operations when compiling</title>
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  13 <big><strong><span class="block">&nbsp;ops - Perl pragma to restrict unsafe operations when compiling</span></strong></big>
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  22         <li><a href="#name">NAME</a></li>
  23         <li><a href="#synopsis">SYNOPSIS</a></li>
  24         <li><a href="#description">DESCRIPTION</a></li>
  25         <li><a href="#see_also">SEE ALSO</a></li>
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  32 <h1><a name="name">NAME</a></h1>
  33 <p>ops - Perl pragma to restrict unsafe operations when compiling</p>
  34 <p>
  35 </p>
  36 <hr />
  37 <h1><a name="synopsis">SYNOPSIS</a></h1>
  38 <pre>
  39   perl -Mops=:default ...    # only allow reasonably safe operations</pre>
  40 <pre>
  41   perl -M-ops=system ...     # disable the 'system' opcode</pre>
  42 <p>
  43 </p>
  44 <hr />
  45 <h1><a name="description">DESCRIPTION</a></h1>
  46 <p>Since the ops pragma currently has an irreversible global effect, it is
  47 only of significant practical use with the <code>-M</code> option on the command line.</p>
  48 <p>See the <a href="file://C|\msysgit\mingw\html/lib/Opcode.html">the Opcode manpage</a> module for information about opcodes, optags, opmasks
  49 and important information about safety.</p>
  50 <p>
  51 </p>
  52 <hr />
  53 <h1><a name="see_also">SEE ALSO</a></h1>
  54 <p>Opcode(3), Safe(3), <code>perlrun(3)</code></p>
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  56 <tr><td class="block" style="background-color: #cccccc" valign="middle">
  57 <big><strong><span class="block">&nbsp;ops - Perl pragma to restrict unsafe operations when compiling</span></strong></big>
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  59 </table>
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