PCRE2_SET_COMPILE_RECURSIONLibrary3FunctioPCRE2nSET_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)
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