pcre2_serialize_free - Man Page

#include <pcre2.h>

void pcre2_serialize_free(uint8_t *bytes);

This function frees the memory that was obtained by pcre2_serialize_encode() to hold a serialized byte stream. The argument must point to such a byte stream or be NULL, in which case the function returns without doing anything.

There is a complete description of the PCRE2 native API in the pcre2api page and a description of the serialization functions in the pcre2serialize page.