171              char * const restrict value, const rsize_t maxsize,
176     return getenv_s(len, value, maxsize, name);
180     if (NULL == name || RSIZE_MAX < maxsize || (0 != maxsize && NULL == value)){
184         if (NULL != value && maxsize)
194         if (vlen < maxsize) {
199             if (maxsize)
207         if (maxsize)
222 ck_strerror_s (char * const s, const rsize_t maxsize, const errno_t errnum)  in ck_strerror_s()  argument
226     return strerror_s(s, maxsize, errnum);  in ck_strerror_s()
230     if (NULL == s || 0 == maxsize || RSIZE_MAX < maxsize) {  in ck_strerror_s()
252         if (errlen < maxsize) {  in ck_strerror_s()
257             memcpy(s, errstr, maxsize-1);  in ck_strerror_s()
258             s[maxsize-1] = '\0';  in ck_strerror_s()
263         if ((rsize_t)snprintf(s, maxsize, "Unknown error %d", errnum) < maxsize)  in ck_strerror_s()
269     if (maxsize > 3)  in ck_strerror_s()
270         memcpy(s+maxsize-4, "...", 4);  in ck_strerror_s()