--- /dev/null
+#![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() {}