PCRE - Perl-compatible regular expressions
#include <pcre.h>
void pcre_free_substring_list(const char **stringptr);
void pcre16_free_substring_list(PCRE_SPTR16 *stringptr);
void pcre32_free_substring_list(PCRE_SPTR32 *stringptr);
This is a convenience function for freeing the store obtained by a previous call to pcre[16|32]_get_substring_list(). Its only argument is a pointer to the list of string pointers.
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.