1 files changed, 28 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/rc_buffer.rs b/src/tools/clippy/tests/ui/rc_buffer.rs
new file mode 100644
index 000000000..1e63a4326
--- /dev/null
+++ b/src/tools/clippy/tests/ui/rc_buffer.rs
@@ -0,0 +1,28 @@
+// run-rustfix
+#![warn(clippy::rc_buffer)]
+#![allow(dead_code, unused_imports)]
+
+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() {}