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version 1.1.1.3, 2013/07/22 08:25:57	version 1.1.1.4, 2014/06/15 19:46:05
Line 102 study data.	Line 102 study data.
<br><a name="SEC3" href="#TOC1">RE-USING A PRECOMPILED PATTERN</a><br>	<br><a name="SEC3" href="#TOC1">RE-USING A PRECOMPILED PATTERN</a><br>
<P>	<P>
Re-using a precompiled pattern is straightforward. Having reloaded it into main	Re-using a precompiled pattern is straightforward. Having reloaded it into main
memory, called <b>pcre[16\|32]_pattern_to_host_byte_order()</b> if necessary,	memory, called <b>pcre[16\|32]_pattern_to_host_byte_order()</b> if necessary, you
you pass its pointer to <b>pcre[16\|32]_exec()</b> or <b>pcre[16\|32]_dfa_exec()</b> in	pass its pointer to <b>pcre[16\|32]_exec()</b> or <b>pcre[16\|32]_dfa_exec()</b> in
the usual way.	the usual way.
</P>	</P>
<P>	<P>
Line 119 in the	Line 119 in the
documentation.	documentation.
</P>	</P>
<P>	<P>
	<b>Warning:</b> The tables that <b>pcre_exec()</b> and <b>pcre_dfa_exec()</b> use
	must be the same as those that were used when the pattern was compiled. If this
	is not the case, the behaviour is undefined.
	</P>
	<P>
If you did not provide custom character tables when the pattern was compiled,	If you did not provide custom character tables when the pattern was compiled,
the pointer in the compiled pattern is NULL, which causes the matching	the pointer in the compiled pattern is NULL, which causes the matching
functions to use PCRE's internal tables. Thus, you do not need to take any	functions to use PCRE's internal tables. Thus, you do not need to take any
Line 126 special action at run time in this case.	Line 131 special action at run time in this case.
</P>	</P>
<P>	<P>
If you saved study data with the compiled pattern, you need to create your own	If you saved study data with the compiled pattern, you need to create your own
<b>pcre[16\|32]_extra</b> data block and set the <i>study_data</i> field to point to the	<b>pcre[16\|32]_extra</b> data block and set the <i>study_data</i> field to point
reloaded study data. You must also set the PCRE_EXTRA_STUDY_DATA bit in the	to the reloaded study data. You must also set the PCRE_EXTRA_STUDY_DATA bit in
<i>flags</i> field to indicate that study data is present. Then pass the	the <i>flags</i> field to indicate that study data is present. Then pass the
<b>pcre[16\|32]_extra</b> block to the matching function in the usual way. If the	<b>pcre[16\|32]_extra</b> block to the matching function in the usual way. If the
pattern was studied for just-in-time optimization, that data cannot be saved,	pattern was studied for just-in-time optimization, that data cannot be saved,
and so is lost by a save/restore cycle.	and so is lost by a save/restore cycle.
Line 149 Cambridge CB2 3QH, England.	Line 154 Cambridge CB2 3QH, England.
</P>	</P>
<br><a name="SEC6" href="#TOC1">REVISION</a><br>	<br><a name="SEC6" href="#TOC1">REVISION</a><br>
<P>	<P>
Last updated: 24 June 2012	Last updated: 12 November 2013
<br>	<br>
Copyright © 1997-2012 University of Cambridge.	Copyright © 1997-2013 University of Cambridge.
<br>	<br>
<p>	<p>
Return to the <a href="index.html">PCRE index page</a>.	Return to the <a href="index.html">PCRE index page</a>.

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