{"ast_node_type":"function","tokens":[{"end":84,"kind":"keyword","start":0,"text":"fn"}]}
fn is_null_ptr<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) -> Option<Span> {
/// Checks if the given expression is a null pointer (modulo casting)
    let (expr, _) = peel_casts(cx, expr);