--- /dev/null
+// run-rustfix
+#![deny(clippy::internal)]
+#![feature(rustc_private)]
+
+extern crate rustc_span;
+
+use rustc_span::symbol::Symbol;
+
+macro_rules! sym {
+ ($tt:tt) => {
+ rustc_span::symbol::Symbol::intern(stringify!($tt))
+ };
+}
+
+fn main() {
+ // Direct use of Symbol::intern
+ let _ = rustc_span::sym::f32;
+
+ // Using a sym macro
+ let _ = rustc_span::sym::f32;
+
+ // Correct suggestion when symbol isn't stringified constant name
+ let _ = rustc_span::sym::proc_dash_macro;
+
+ // interning a keyword
+ let _ = rustc_span::symbol::kw::SelfLower;
+
+ // Interning a symbol that is not defined
+ let _ = Symbol::intern("xyz123");
+ let _ = sym!(xyz123);
+
+ // Using a different `intern` function
+ let _ = intern("f32");
+}
+
+fn intern(_: &str) {}