1 files changed, 17 insertions, 0 deletions

diff --git a/src/test/ui/impl-trait/issues/issue-42479.rs b/src/test/ui/impl-trait/issues/issue-42479.rs
new file mode 100644
index 000000000..efc1f975d
--- /dev/null
+++ b/src/test/ui/impl-trait/issues/issue-42479.rs
@@ -0,0 +1,17 @@
+// check-pass
+
+use std::iter::once;
+
+struct Foo {
+    x: i32,
+}
+
+impl Foo {
+    fn inside(&self) -> impl Iterator<Item = &i32> {
+        once(&self.x)
+    }
+}
+
+fn main() {
+    println!("hi");
+}