diff --git a/src/test/ui/issues/issue-38591.rs b/src/test/ui/issues/issue-38591.rs
new file mode 100644
index 00000000000..7aa71f8b9eb
--- /dev/null
+++ b/src/test/ui/issues/issue-38591.rs
@@ -0,0 +1,10 @@
+// run-pass
+
+struct S<T> {
+    t : T,
+    s : Box<S<fn(u : T)>>
+}
+
+fn f(x : S<u32>) {}
+
+fn main () {}