pcre_free_substring man page
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SYNOPSIS
#include <pcre.h>
void pcre_free_substring(const char *stringptr);
DESCRIPTION
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 pcreapi page and a description of the POSIX API in the pcreposix page.
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