1 files changed, 15 insertions, 0 deletions
diff --git a/tests/ui/impl-trait/nesting.rs b/tests/ui/impl-trait/nesting.rs
new file mode 100644
index 000000000..27bdd5fa4
--- /dev/null
+++ b/tests/ui/impl-trait/nesting.rs
@@ -0,0 +1,15 @@
+// run-pass
+#![allow(dead_code)]
+
+fn foo<T>(t: T) -> impl Into<[T; { const FOO: usize = 1; FOO }]> {
+    [t]
+}
+
+fn bar() -> impl Into<[u8; { const FOO: usize = 1; FOO }]> {
+    [99]
+}
+
+fn main() {
+    println!("{:?}", foo(42).into());
+    println!("{:?}", bar().into());
+}