1 files changed, 6 insertions, 0 deletions
diff --git a/tests/ui/feature-gates/feature-gate-box_syntax.rs b/tests/ui/feature-gates/feature-gate-box_syntax.rs
new file mode 100644
index 000000000..778660cc0
--- /dev/null
+++ b/tests/ui/feature-gates/feature-gate-box_syntax.rs
@@ -0,0 +1,6 @@
+// Test that the use of the box syntax is gated by `box_syntax` feature gate.
+
+fn main() {
+    let x = box 3;
+    //~^ ERROR box expression syntax is experimental; you can call `Box::new` instead
+}