1 files changed, 26 insertions, 0 deletions
diff --git a/src/test/ui/lint/unused_braces_borrow.rs b/src/test/ui/lint/unused_braces_borrow.rs
new file mode 100644
index 000000000..b7c529d73
--- /dev/null
+++ b/src/test/ui/lint/unused_braces_borrow.rs
@@ -0,0 +1,26 @@
+// check-pass
+// run-rustfix
+
+#![warn(unused_braces)]
+
+// changing `&{ expr }` to `&expr` changes the semantic of the program
+// so we should not warn this case
+
+#[repr(packed)]
+pub struct A {
+    pub a: u8,
+    pub b: u32,
+}
+
+fn consume<T>(_: T) {}
+
+fn main() {
+    let a = A {
+        a: 42,
+        b: 1729,
+    };
+
+    consume(&{ a.b });
+    consume({ a.b });
+    //~^ WARN unnecessary braces
+}