is_visible_txid(txid value, const TxidSnapshot *snap)
{
	if (value < snap->xmin)
		return true;
	else if (value >= snap->xmax)
		return false;
#ifdef USE_BSEARCH_IF_NXIP_GREATER
	else if (snap->nxip > USE_BSEARCH_IF_NXIP_GREATER)
	{
		void	   *res;

		res = bsearch(&value, snap->xip, snap->nxip, sizeof(txid), cmp_txid);
		/* if found, transaction is still in progress */
		return (res) ? false : true;
	}
#endif
	else
	{
		uint32		i;

		for (i = 0; i < snap->nxip; i++)
		{
			if (value == snap->xip[i])
				return false;
		}
		return true;
	}
}

This weakness involves numeric computation errors, such as integer overflows, underflows, or precision losses, which can lead to miscalculations and exploitable behaviors in software.