pcre2_set_compile_recursion_guard(3) — Linux manual page


PCRE2_SE...ION_GUARD(3) Library Functions Manual PCRE2_SE...ION_GUARD(3)

NAME         top

       PCRE2 - Perl-compatible regular expressions (revised API)

SYNOPSIS         top

       #include <pcre2.h>

       int pcre2_set_compile_recursion_guard(pcre2_compile_context *ccontext,
         int (*guard_function)(uint32_t, void *), void *user_data);

DESCRIPTION         top

       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         top

       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 2023-12-22.  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

PCRE2 10.00                  22 October 2014     PCRE2_SE...ION_GUARD(3)