pcre2_set_compile_recursion_guard(3) — Linux manual page
PCRE2_SE...ION_GUARD(3) Library Functions Manual PCRE2_SE...ION_GUARD(3)
NAME
PCRE2 - Perl-compatible regular expressions (revised API)
SYNOPSIS
#include <pcre2.h>
int pcre2_set_compile_recursion_guard(pcre2_compile_context *ccontext,
int (*guard_function)(uint32_t, void *), void *user_data);
DESCRIPTION
This function defines, within a compile context, a function that
is called whenever pcre2_compile() starts to compile a
parenthesized part of a pattern. The first argument to the
function gives the current depth of parenthesis nesting, and the
second is user data that is supplied when the function is set up.
The callout function should return zero if all is well, or non-
zero to force an error. This feature is provided so that
applications can check the available system stack space, in order
to avoid running out. The result of
pcre2_set_compile_recursion_guard() is always zero.
There is a complete description of the PCRE2 native API in the
pcre2api page and a description of the POSIX API in the
pcre2posix page.
COLOPHON
This page is part of the PCRE (Perl Compatible Regular
Expressions) project. Information about the project can be found
at ⟨http://www.pcre.org/⟩. If you have a bug report for this
manual page, see
⟨http://bugs.exim.org/enter_bug.cgi?product=PCRE⟩. This page was
obtained from the tarball fetched from
⟨https://github.com/PhilipHazel/pcre2.git⟩ on 2024-06-14. If you
discover any rendering problems in this HTML version of the page,
or you believe there is a better or more up-to-date source for
the page, or you have corrections or improvements to the
information in this COLOPHON (which is not part of the original
manual page), send a mail to man-pages@man7.org