i2d_ASN1_GENERALIZEDTIME
int i2d_ASN1_GENERALIZEDTIME(ASN1_GENERALIZEDTIME *a, unsigned char **out);
LCRYPTO_ALIAS(i2d_ASN1_GENERALIZEDTIME);
LCRYPTO_USED(i2d_ASN1_GENERALIZEDTIME);
if ((len = i2d_ASN1_GENERALIZEDTIME(gt, &p)) <= 0) {