The following scene causes POV-Ray to crash because of an array assignment
(read the comments):

#declare pointarray = array[5] {<0,0>,<0,1>,<2,1>,<3,0>,<2,.5>};

#local dim = dimension_size(pointarray,1);

// if the last point in the array isn't the same as the first point...
#if (pointarray[dim-1].u != pointarray[0].u & pointarray[dim-1].v !=
pointarray[0].v)

 //... then add a point to the array that's identical to the first point.
 #local correctarray = array[dim+1];
 #local copying = 0;
 #while (copying < dim)
  #local correctarray[copying] = pointarray[copying];
  #local copying = copying + 1;
 #end
 #local correctarray[dim] = pointarray[0];

 // The following line causes POV-Ray to crash (semi-colon or no
semi-colon).
 // It should overwrite the old array with the newly created, correct
 // array, which has a dimension one size bigger.
 #local pointarray = correctarray;

 #local dim = dim+1;
#end

- Slime
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