make_bound_box(POLYGON *poly)
{
	int			i;
	double		x1,
				y1,
				x2,
				y2;

	if (poly->npts > 0)
	{
		x2 = x1 = poly->p[0].x;
		y2 = y1 = poly->p[0].y;
		for (i = 1; i < poly->npts; i++)
		{
			if (poly->p[i].x < x1)
				x1 = poly->p[i].x;
			if (poly->p[i].x > x2)
				x2 = poly->p[i].x;
			if (poly->p[i].y < y1)
				y1 = poly->p[i].y;
			if (poly->p[i].y > y2)
				y2 = poly->p[i].y;
		}

		box_fill(&(poly->boundbox), x1, x2, y1, y2);
	}
	else
		ereport(ERROR,
				(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
				 errmsg("cannot create bounding box for empty polygon")));
}

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