Print out zero length string properly.

diff --git a/crypto/asn1/tasn_prn.c b/crypto/asn1/tasn_prn.c
index f595e385f21e21331457ca4cae5cbc15c86112d9..cf4c4ab3740f93b36a9fc8f9524e42b452d9df5d 100644 (file)
--- a/crypto/asn1/tasn_prn.c
+++ b/crypto/asn1/tasn_prn.c
@@ -506,7 +506,8 @@ static int asn1_print_obstring_ctx(BIO *out, ASN1_STRING *str, int indent,
                }
        else if (BIO_puts(out, "\n") <= 0)
                return 0;
-       if (BIO_dump_indent(out, (char *)str->data, str->length,
+       if ((str->length > 0)
+               && BIO_dump_indent(out, (char *)str->data, str->length,
                                indent + 2) <= 0)
                return 0;
        return 1;