-char *sk_ASN1_UTF8STRING2text(STACK_OF(ASN1_UTF8STRING) *text, const char *sep,
- size_t max_len /* excluding NUL terminator */)
+/* |max_len| excludes NUL terminator and may be 0 to indicate no restriction */
+char *ossl_sk_ASN1_UTF8STRING2text(STACK_OF(ASN1_UTF8STRING) *text,
+ const char *sep, size_t max_len)