1 files changed, 9 insertions, 0 deletions
diff --git a/tests/ui/feature-gates/feature-gate-unboxed-closures-method-calls.rs b/tests/ui/feature-gates/feature-gate-unboxed-closures-method-calls.rs
new file mode 100644
index 000000000..42f7c5f0f
--- /dev/null
+++ b/tests/ui/feature-gates/feature-gate-unboxed-closures-method-calls.rs
@@ -0,0 +1,9 @@
+#![allow(dead_code)]
+
+fn foo<F: Fn()>(mut f: F) {
+    f.call(()); //~ ERROR use of unstable library feature 'fn_traits'
+    f.call_mut(()); //~ ERROR use of unstable library feature 'fn_traits'
+    f.call_once(()); //~ ERROR use of unstable library feature 'fn_traits'
+}
+
+fn main() {}