const char* buffer = "abcdef";
const char* pattern = "c";
regex_t re;
cout << "headline::regcomp()" << endl;
if(regcomp(&re, pattern, REG_EXTENDED|REG_NOSUB) != 0) { log("regex:", 1); } else
{
	int pm_size = 1;
	regmatch_t pm;//[pm_size];
	int error = regexec(&re, &buffer[0], pm_size, &pm, 0);
	while(!error)
	{
		cout << "pm.rm_so = " << pm.rm_so << endl;
		cout << "pm.rm_eo = " << pm.rm_eo << endl;

		cout << endl;
		
		
		buffer += pm.rm_eo;
		error = regexec(&re, buffer, pm_size, &pm, REG_NOTBOL);
	}
	
	int size = regerror(error, &re, 0, 0);
	char* ebuf = new char[size +1];
	regerror(error, &re, ebuf, size);
	cout << ebuf << endl;
	delete [] ebuf;
}
regfree(&re);