blabel_print(netdissect_options *ndo,
             const u_char *cp)
{
	int bitlen, slen, b;
	const u_char *bitp, *lim;
	char tc;

	if (!ND_TTEST2(*cp, 1))
		return(NULL);
	if ((bitlen = *cp) == 0)
		bitlen = 256;
	slen = (bitlen + 3) / 4;
	lim = cp + 1 + slen;

	/* print the bit string as a hex string */
	ND_PRINT((ndo, "\\[x"));
	for (bitp = cp + 1, b = bitlen; bitp < lim && b > 7; b -= 8, bitp++) {
		ND_TCHECK(*bitp);
		ND_PRINT((ndo, "%02x", *bitp));
	}
	if (b > 4) {
		ND_TCHECK(*bitp);
		tc = *bitp++;
		ND_PRINT((ndo, "%02x", tc & (0xff << (8 - b))));
	} else if (b > 0) {
		ND_TCHECK(*bitp);
		tc = *bitp++;
		ND_PRINT((ndo, "%1x", ((tc >> 4) & 0x0f) & (0x0f << (4 - b))));
	}
	ND_PRINT((ndo, "/%d]", bitlen));
	return lim;
trunc:
	ND_PRINT((ndo, ".../%d]", bitlen));
	return NULL;
}

The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.