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Update bundled PCRE2-library to version 10.23

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Some manual changes done to the library were lost with this update.
They will be added in the next commit.
This commit is contained in:
Esa Korhonen
2017-05-29 15:31:42 +03:00
parent 7231563937
commit 36af74cb25
218 changed files with 49218 additions and 26130 deletions
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24
pcre2/doc/html/pcre2stack.html
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@ -57,12 +57,13 @@ assertion and "once-only" subpatterns, which are handled like subroutine calls.
Normally, these are never very deep, and the limit on the complexity of
<b>pcre2_dfa_match()</b> is controlled by the amount of workspace it is given.
However, it is possible to write patterns with runaway infinite recursions;
such patterns will cause <b>pcre2_dfa_match()</b> to run out of stack. At
present, there is no protection against this.
such patterns will cause <b>pcre2_dfa_match()</b> to run out of stack unless a
limit is applied (see below).
</P>
<P>
The comments that follow do NOT apply to <b>pcre2_dfa_match()</b>; they are
relevant only for <b>pcre2_match()</b> without the JIT optimization.
The comments in the next three sections do not apply to
<b>pcre2_dfa_match()</b>; they are relevant only for <b>pcre2_match()</b> without
the JIT optimization.
</P>
<br><b>
Reducing <b>pcre2_match()</b>'s stack usage
@ -115,7 +116,7 @@ entitled
in the
<a href="pcre2api.html"><b>pcre2api</b></a>
documentation. Since the block sizes are always the same, it may be possible to
implement customized a memory handler that is more efficient than the standard
implement a customized memory handler that is more efficient than the standard
function. The memory blocks obtained for this purpose are retained and re-used
if possible while <b>pcre2_match()</b> is running. They are all freed just
before it exits.
@ -151,6 +152,15 @@ pattern to match. This is done by calling <b>pcre2_match()</b> repeatedly with
different limits.
</P>
<br><b>
Limiting <b>pcre2_dfa_match()</b>'s stack usage
</b><br>
<P>
The recursion limit, as described above for <b>pcre2_match()</b>, also applies
to <b>pcre2_dfa_match()</b>, whose use of recursive function calls for
recursions in the pattern can lead to runaway stack usage. The non-recursive
match limit is not relevant for DFA matching, and is ignored.
</P>
<br><b>
Changing stack size in Unix-like systems
</b><br>
<P>
@ -198,9 +208,9 @@ Cambridge, England.
REVISION
</b><br>
<P>
Last updated: 21 November 2014
Last updated: 23 December 2016
<br>
Copyright &copy; 1997-2014 University of Cambridge.
Copyright &copy; 1997-2016 University of Cambridge.
<br>
<p>
Return to the <a href="index.html">PCRE2 index page</a>.