PCRE2_SET_COMPILE_RECURSION_GUARD(3)PCRE2_SET_COMPILE_RECURSION_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 sup‐
plied 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_com‐
pile_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.
PCRE2 10.00 22 OctoberPCRE2_SET_COMPILE_RECURSION_GUARD(3)
