message: Implement isize -> raw-ptr cast
diff: @@ -482,6 +482,9 @@ fn trans_stmt<'a, 'tcx: 'a>(
  (ty::Uint(_), ty::RawPtr(..)) if from_ty.sty == fx.tcx.types.usize.sty => {
  lval.write_cvalue(fx, operand.unchecked_cast_to(dest_layout));
  }
  + (ty::Int(_), ty::RawPtr(..)) if from_ty.sty == fx.tcx.types.isize.sty => {
  + lval.write_cvalue(fx, operand.unchecked_cast_to(dest_layout));
  + }
  (ty::Char, ty::Uint(_))
  | (ty::Uint(_), ty::Char)
  | (ty::Uint(_), ty::Int(_))
  