1 files changed, 17 insertions, 0 deletions
diff --git a/tests/ui/type-alias-impl-trait/recursive-fn-tait.rs b/tests/ui/type-alias-impl-trait/recursive-fn-tait.rs
new file mode 100644
index 000000000..3d1759097
--- /dev/null
+++ b/tests/ui/type-alias-impl-trait/recursive-fn-tait.rs
@@ -0,0 +1,17 @@
+// test for #113326
+#![feature(type_alias_impl_trait)]
+
+pub type Diff = impl Fn(usize) -> usize;
+
+pub fn lift() -> Diff {
+    |_: usize |loop {}
+}
+
+pub fn add(
+    n: Diff,
+    m: Diff,
+) -> Diff {
+    move |x: usize| m(n(x)) //~ ERROR: concrete type differs
+}
+
+fn main() {}