Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/src/tools/clippy/tests/ui-internal/unnecessary_symbol_str.rs b/src/tools/clippy/tests/ui-internal/unnecessary_symbol_str.rs
new file mode 100644
index 000000000..1bb5d55f0
--- /dev/null
+++ b/src/tools/clippy/tests/ui-internal/unnecessary_symbol_str.rs
@@ -0,0 +1,21 @@
+// run-rustfix
+#![feature(rustc_private)]
+#![deny(clippy::internal)]
+#![allow(
+    clippy::borrow_deref_ref,
+    clippy::unnecessary_operation,
+    unused_must_use,
+    clippy::missing_clippy_version_attribute
+)]
+
+extern crate rustc_span;
+
+use rustc_span::symbol::{Ident, Symbol};
+
+fn main() {
+    Symbol::intern("foo").as_str() == "clippy";
+    Symbol::intern("foo").to_string() == "self";
+    Symbol::intern("foo").to_ident_string() != "Self";
+    &*Ident::empty().as_str() == "clippy";
+    "clippy" == Ident::empty().to_string();
+}