Function lint_ptr2int 

fn lint_ptr2int<'tcx>(
    cx: &LateContext<'tcx>,
    expr: &'tcx Expr<'tcx>,
    cast_from_expr: &'tcx Expr<'tcx>,
    cast_from_ty: Ty<'tcx>,
    cast_to_hir: &'tcx Ty<'tcx>,
    cast_to_ty: Ty<'tcx>,
)