PCRE - Perl-compatible regular expressions .rs #include <pcre.h>

void pcre_free_substring(const char *stringptr); .

.rs This is a convenience function for freeing the store obtained by a previous call to pcre_get_substring() or pcre_get_named_substring(). Its only argument is a pointer to the string.

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