1 files changed, 16 insertions, 0 deletions
diff --git a/src/test/ui/unboxed-closures/unboxed-closures-infer-fn-once-move-from-projection.rs b/src/test/ui/unboxed-closures/unboxed-closures-infer-fn-once-move-from-projection.rs
new file mode 100644
index 000000000..6e404c616
--- /dev/null
+++ b/src/test/ui/unboxed-closures/unboxed-closures-infer-fn-once-move-from-projection.rs
@@ -0,0 +1,16 @@
+#![allow(unused)]
+
+fn foo<F>(f: F)
+    where F: Fn()
+{
+}
+
+fn main() {
+    // Test that this closure is inferred to `FnOnce` because it moves
+    // from `y.0`. This affects the error output (the error is that
+    // the closure implements `FnOnce`, not that it moves from inside
+    // a `Fn` closure.)
+    let y = (vec![1, 2, 3], 0);
+    let c = || drop(y.0); //~ ERROR expected a closure that implements the `Fn` trait
+    foo(c);
+}