Commit 5388b8d4 authored by Kurt Roeckx's avatar Kurt Roeckx
Browse files

Avoid creating an illegal pointer. 



Found by tis-interpreter

Reviewed-by: default avatarRich Salz <rsalz@openssl.org>

GH: #1230
parent 5b8fa431

crypto/asn1/a_int.c

+6 −6
Original line number Diff line number Diff line
@@ -115,21 +115,21 @@ static size_t i2c_ibuf(const unsigned char *b, size_t blen, int neg, 
        memcpy(p, b, blen);

    else {

        /* Begin at the end of the encoding */

        n = b + blen - 1;

        p += blen - 1;

        n = b + blen;

        p += blen;

        i = blen;

        /* Copy zeros to destination as long as source is zero */

        while (!*n && i > 1) {

            *(p--) = 0;

        while (!n[-1] && i > 1) {

            *(--p) = 0;

            n--;

            i--;

        }

        /* Complement and increment next octet */

        *(p--) = ((*(n--)) ^ 0xff) + 1;

        *(--p) = ((*(--n)) ^ 0xff) + 1;

        i--;

        /* Complement any octets left */

        for (; i > 0; i--)

            *(p--) = *(n--) ^ 0xff;

            *(--p) = *(--n) ^ 0xff;

    }



    *pp += ret;