1 files changed, 18 insertions, 0 deletions
diff --git a/tests/ui/const-generics/unused_braces.rs b/tests/ui/const-generics/unused_braces.rs
new file mode 100644
index 000000000..e9f15b401
--- /dev/null
+++ b/tests/ui/const-generics/unused_braces.rs
@@ -0,0 +1,18 @@
+// check-pass
+// run-rustfix
+#![warn(unused_braces)]
+
+macro_rules! make_1 {
+    () => {
+        1
+    }
+}
+
+struct A<const N: usize>;
+
+fn main() {
+    let _: A<7>; // ok
+    let _: A<{ 7 }>; //~ WARN unnecessary braces
+    let _: A<{ 3 + 5 }>; // ok
+    let _: A<{make_1!()}>; // ok
+}