67 lines
1.9 KiB
HTML
67 lines
1.9 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML><HEAD><TITLE>Man page of PCRE2_SET_COMPILE_RECURSION_GUARD</TITLE>
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</HEAD><BODY>
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<H1>PCRE2_SET_COMPILE_RECURSION_GUARD</H1>
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Section: C Library Functions (3)<BR>Updated: 22 October 2014<BR><A HREF="#index">Index</A>
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<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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PCRE2 - Perl-compatible regular expressions (revised API)
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<P>
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<B>#include <<A HREF="file:///usr/include/pcre2.h">pcre2.h</A>></B>
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<P>
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<PRE>
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<B>int pcre2_set_compile_recursion_guard(pcre2_compile_context *</B><I>ccontext</I>,
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<B> int (*</B><I>guard_function</I>)(uint32_t, void *), void *<I>user_data</I>);
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</PRE>
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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<P>
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This function defines, within a compile context, a function that is called
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whenever <B>pcre2_compile()</B> starts to compile a parenthesized part of a
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pattern. The first argument to the function gives the current depth of
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parenthesis nesting, and the second is user data that is supplied when the
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function is set up. The callout function should return zero if all is well, or
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non-zero to force an error. This feature is provided so that applications can
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check the available system stack space, in order to avoid running out. The
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result of <B>pcre2_set_compile_recursion_guard()</B> is always zero.
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<P>
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There is a complete description of the PCRE2 native API in the
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<B>pcre2api</B>
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page and a description of the POSIX API in the
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<B>pcre2posix</B>
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page.
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT id="1"><A HREF="#lbAB">NAME</A><DD>
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<DT id="2"><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT id="3"><A HREF="#lbAD">DESCRIPTION</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 00:05:50 GMT, March 31, 2021
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</BODY>
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</HTML>
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