---
name: "pcre_free_study"
section: "3"
platform: "linux"
package: "pcre"
version: "8.45-5"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/pcre_free_study"
---

# pcre\_free\_study(3)

Perl-compatible regular expressions

## NAME

PCRE - Perl-compatible regular expressions

## SYNOPSIS

**#include \<pcre.h\>**

**void pcre\_free\_study(pcre\_extra \**extra*);**

**void pcre16\_free\_study(pcre16\_extra \**extra*);**

**void pcre32\_free\_study(pcre32\_extra \**extra*);**

## DESCRIPTION

This function is used to free the memory used for the data generated by a call to **pcre\[16\|32\]\_study()** when it is no longer needed. The argument must be the result of such a call.

There is a complete description of the PCRE native API in the **pcreapi** page and a description of the POSIX API in the **pcreposix** page.