regerror
regerror(n, expr, error, sizeof error);
regerror(eval, &rp, errbuf, sizeof(errbuf));
regerror(res, &(rep->rcmp), rebuf, sizeof(rebuf));
regerror(rv, ®, buf, bufsz);
regerror(rv, ®, buf, bufsz);
regerror(st, ®, errmsg, sizeof(errmsg));
regerror(st, ®, errmsg, sizeof(errmsg));
regerror(ret, &rc->regexp, err_buf, sizeof(err_buf));
size_t regerror(int, const regex_t * __restrict, char * __restrict, size_t);
ne = regerror(REG_BADPAT, (regex_t *)NULL, erbuf, sizeof(erbuf));
ne = regerror(REG_BADPAT, (regex_t *)NULL, erbuf, (size_t)SHORT);
ne = regerror(REG_ITOA|REG_BADPAT, (regex_t *)NULL, erbuf, sizeof(erbuf));
ne = regerror(REG_ATOI, &re, erbuf, sizeof(erbuf));
len = regerror(err, &re, erbuf, sizeof(erbuf));
len = regerror(err, &re, erbuf, sizeof(erbuf));
len = regerror(REG_ITOA|err, (regex_t *)NULL, epbuf, sizeof(epbuf));
(void) regerror(REG_ATOI, &re, efbuf, sizeof(efbuf));
len = regerror(err, &re, erbuf, sizeof(erbuf));
len = regerror(err, &re, erbuf, sizeof(erbuf));
regerror(rc, &re_regexp, re_errstr, sizeof(re_errstr));
regerror(error, comp, buf, sizeof(buf));
regerror(errcode, pre, errbuf, sizeof errbuf);
regerror(errcode, pre, errbuf, sizeof errbuf);
regerror(c, &r_pattern[i], re_error,
errlen = regerror(er, re, NULL, 0);
regerror(er, re, errbuf, errlen);
(void)regerror(error,
s = regerror(errcode, preg, NULL, 0);
(void)regerror(errcode, preg, oe, s);
regerror(error, &rgx, errbuf, sizeof(errbuf));
regerror(i, &re, buf, BUFSIZ - 1);
regerror(i, &re, buf,
(void)regerror(i, &R, buf, sizeof buf);
regerror(rv, ®, errbuf, sizeof(errbuf));
regerror(rv, ®, errbuf, sizeof(errbuf));
regerror(error, &exc_regex, errbuf, sizeof(errbuf));
regerror(error, &inc_regex, errbuf, sizeof(errbuf));
size = regerror(error, &entry->regex, NULL, 0);
(void)regerror(error, &entry->regex, regerrorstr, size);
size = regerror(error, &ent->regex, NULL, 0);
(void)regerror(error, &ent->regex, regerrorstr,