if let StmtKind::Local(local) = stmt.kind && let Some(init) = local.init && let ExprKind::Call(func, args) = init.kind && let ExprKind::Path(ref qpath) = func.kind && match_qpath(qpath, &["std", "mem", "transmute"]) && args.len() == 1 && let ExprKind::Path(ref qpath1) = args[0].kind && match_qpath(qpath1, &["ZPTR"]) && let PatKind::Wild = local.pat.kind { // report your lint here }