#![warn(clippy::rc_buffer)] use std::cell::RefCell; use std::ffi::OsString; use std::path::PathBuf; use std::rc::Rc; struct S { // triggers lint bad1: Rc<String>, bad2: Rc<PathBuf>, bad3: Rc<Vec<u8>>, bad4: Rc<OsString>, // does not trigger lint good1: Rc<RefCell<String>>, } // triggers lint fn func_bad1(_: Rc<String>) {} fn func_bad2(_: Rc<PathBuf>) {} fn func_bad3(_: Rc<Vec<u8>>) {} fn func_bad4(_: Rc<OsString>) {} // does not trigger lint fn func_good1(_: Rc<RefCell<String>>) {} fn main() {}