document V_ASN1_NEG

diff --git a/lib/libcrypto/man/ASN1_STRING_length.3 b/lib/libcrypto/man/ASN1_STRING_length.3
index 83b6ffd..e7e7867 100644 (file)
--- a/lib/libcrypto/man/ASN1_STRING_length.3
+++ b/lib/libcrypto/man/ASN1_STRING_length.3
@@ -1,4 +1,4 @@
-.\" $OpenBSD: ASN1_STRING_length.3,v 1.27 2021/11/20 11:49:08 schwarze Exp $
+.\" $OpenBSD: ASN1_STRING_length.3,v 1.28 2021/12/09 18:45:45 schwarze Exp $
 .\" full merge up to: OpenSSL 24a535ea Sep 22 13:14:20 2020 +0100
 .\"
 .\" This file is a derived work.
@@ -66,7 +66,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 .\" OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: November 20 2021 $
+.Dd $Mdocdate: December 9 2021 $
 .Dt ASN1_STRING_LENGTH 3
 .Os
 .Sh NAME
@@ -276,6 +276,11 @@ should be freed using
 .Fn ASN1_STRING_type
 returns the type of
 .Fa x .
+If the bit
+.Dv V_ASN1_NEG
+is set in the return value,
+.Fa x
+is an ASN.1 INTEGER or ENUMERATED object with a negative value.
 .Pp
 Almost all ASN.1 types are represented as
 .Vt ASN1_STRING
@@ -382,7 +387,9 @@ or a negative number if an error occurred.
 .Pp
 .Fn ASN1_STRING_type
 returns an integer constant, for example
-.Dv V_ASN1_OCTET_STRING .
+.Dv V_ASN1_OCTET_STRING
+or
+.Dv V_ASN1_NEG_INTEGER .
 .Pp
 In some cases of failure of
 .Fn ASN1_STRING_dup ,